网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
共用题干
ADHD Linked to AIF Pollutants
Children have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.
Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.
The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.
Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE.
ADHD Linked to AIF Pollutants
Children have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.
Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.
The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.
Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE.
The women with high levels of PAHs in their blood were more likely to have kids with ADHD.
A: Right
B: Wrong
C: Not mentioned
A: Right
B: Wrong
C: Not mentioned
参考答案
参考解析
解析：根据第二段中“In a new study , she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City.”可知，她们只是在纽约市挑选不吸烟的孕妇，因此题干叙述错误，选B。
根据第二段“The researchers wanted to probe（探查）other sources of PAHs , ones that's would have been hard for an individual to avoid.”可知，研究的目的是找出除香烟外其他能排放多环芳烃的原料。题干陈述的是所有可以排放多环芳烃的原料，与原文不符。故选B。
由第二段内容可知，研究者们选择不吸烟的妈妈，是已经知道了香烟可以释放多环芳烃，为了排除香烟对研究结果的影响，而找出其他可以排放多环芳烃的物质。因此题干叙述错误，选B。
与该题相关的信息在第三段首句，首句只是提到在每个妇女孕期测试她们的血液，但并没有说每月测一次，多久测一次文中并未提到。因此本题选C。
文章中并未提到患有注意缺陷多动障碍的儿童在学校经常失败，故选C。
根据最后一段“Those with high levels were five times as likely to have children who showed attention problems by age 9.”可知，血液中多环芳烃含量高的妇女，她们的孩子更有可能患有注意缺陷多动障碍。句子中的attention problem。指的就是ADHD。
文章第一段最后一句“The biggest sources of these PAHs: the burning of fossil fuels, wood and trash.”提出，多环芳烃的最大来源是化石、木材和废物的燃烧。而交通和家庭产热只是研究范围内的最大多环芳烃产生来源。因此题干叙述错误，选B。
根据第二段“The researchers wanted to probe（探查）other sources of PAHs , ones that's would have been hard for an individual to avoid.”可知，研究的目的是找出除香烟外其他能排放多环芳烃的原料。题干陈述的是所有可以排放多环芳烃的原料，与原文不符。故选B。
由第二段内容可知，研究者们选择不吸烟的妈妈，是已经知道了香烟可以释放多环芳烃，为了排除香烟对研究结果的影响，而找出其他可以排放多环芳烃的物质。因此题干叙述错误，选B。
与该题相关的信息在第三段首句，首句只是提到在每个妇女孕期测试她们的血液，但并没有说每月测一次，多久测一次文中并未提到。因此本题选C。
文章中并未提到患有注意缺陷多动障碍的儿童在学校经常失败，故选C。
根据最后一段“Those with high levels were five times as likely to have children who showed attention problems by age 9.”可知，血液中多环芳烃含量高的妇女，她们的孩子更有可能患有注意缺陷多动障碍。句子中的attention problem。指的就是ADHD。
文章第一段最后一句“The biggest sources of these PAHs: the burning of fossil fuels, wood and trash.”提出，多环芳烃的最大来源是化石、木材和废物的燃烧。而交通和家庭产热只是研究范围内的最大多环芳烃产生来源。因此题干叙述错误，选B。
更多 “共用题干 ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. The women with high levels of PAHs in their blood were more likely to have kids with ADHD.A: RightB: WrongC: Not mentioned” 相关考题
考题
When things aren’t going well, my parents always ---------（鼓励）me, telling me not to give up.
考题
When and where to build the new school ____ ?A. is not decidedB. are not decidedC. has not decidedD. have not decided
考题
根据下列材料请回答 16～30 题：Some years ago，Chinese high school students would show their new schoolbags，new clothes or new pens to their classmates when the new term started．Today，however，all have 16 If you still come back to school 17 0nly these things，you are out—of-date(过时的)。Students in big cities like to bring the latest high．tech things to school，and feel happy and 18 to show off(炫耀)these things to 19 ．Mobile phones，MP3 players，CD players，electronic dictionaries，the list is endless．Young people think that．1iving in the 21 st century，they must keep up with the 20 They don't want to fall 21 ．Besides，they think 22 they need to keep in touch with their classmates．SO they need mobile phones．They also like to 23 the pop music，SO they need CD players．They explain that， 24 like electronic dictionarjes，these can be 25 in their study， 26 ．They think that their parents should understand 27 they want these things-Foreign students will also bring some latest high-tech things when they 28 to school at the beginning of a new term． 29 ，they often use the money which they made by themselves during the holiday to 30 these high—tech things that they want．第 16 题A．changedB．comeC．joinedD．stopped
考题
设在SQL Server 2008某数据库中有表SC（Sn0，Cn0，Grade），其中Grade列的类型为int。若在查询成绩时，希望将成绩按“优”、“良”、“中”、“及格”和“不及格”形式显示，则下列Case函数中正确的是（ ）。A.Case GradeWhen Grade between 90 and 100 THEN Grade=ˊ优ˊWhen Grade between 80 and 89 THEN Grade=ˊ良ˊWhen Grade between 70 and 79 THEN Grade=ˊ由ˊWhen Grade between 60 and 69 THEN Grade=ˊ及格ˊElse Grade=ˊ不及格ˊEndB.Case GradeWhen Grade between 90 and 100 THEN ˊ优ˊWhen Grade between 80 and 89 THEN ˊ良ˊWhen Grade between 70 and 79 THENˊ中ˊWhen Grade between 60 and 69 THENˊ及格ˊElseˊ不及格ˊEndC.CaseWhen Grade between 90 and 100 THEN Grade=ˊ优ˊWhen Grade between 80 and 89 THEN Grade=ˊ良ˊWhen Grade between 70 and 79 THEN Grade=ˊ由ˊWhen Grade between 60 and 69 THEN Grade=ˊ及格ˊElse Grade=ˊ不及格ˊEndD.CaseWhen Grade between 90 and 100 THENˊ优ˊWhen Grade between 80 and 89 THEN ˊ良ˊWhen Grade between 70 and 79 THEN ˊ由ˊWhen Grade between 60 and 69 THEN ˊ及格ˊElseˊ不及格ˊEnd
考题
共用题干
Priscilla Ouchida's "energy-efficient" house turned out to be a horrible dream.When she and her engineer husband married a few years ago,they built a$100,000,three-bedroom home in Cali-fornia._________(46)Problems began as soon as the couple moved in,however. Priscilla's eyes burned._________ (47)She suffered from headaches and could hardly sleep.It was as though she had suddenly developed a strange illness.Experts finally traced the cause of her illness.The level of formaldehyde（甲醛）gas in her kitchen was twice the maximum allowed by federal standards for chemical workers.The source of the gas?__________(48)The Ouchidas are victims of indoor air pollution,which is not given sufficient attention partly because of the nation's drive to save energy.The problem itself isn't new."The indoor environment was dirty long before energy conservation came along,"__________(49)"Energy conservation has tended to accentuate the situation in some cases."The problem appears to be more troublesome in newly constructed homes rather than old ones. Back in the days when energy was cheap,home builders didn't worry much about unsealed cracks. __________(50)As a result,the pollutants generated in most households seldom build up to dangerous levels._________（50）A:Her new kitchen cabinets and wall-to-wall carpeting.B:Because of such leaks,the air in an average home was replaced by fresh outdoor air about once an hour.C:The level of formaldehyde gas should be controlled.D:Her throat was constantly dry.E:says Moschandreas,a pollution scientist at Geomet Technologies in Maryland.F: Tightly sealed to prevent air leaks,the house was equipped with small double-paned（双层玻璃的）windows and several other energy-saving features.
考题
共用题干
ADHD Linked to Air PollutantsChildren have an increased of attention problems,seen as early as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pregnant. That's the finding of a new study.Released when things aren't burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs:the burning of fossil fuels, wood and trash.Frederica Perera works at Columbia University's Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects children's health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera's team focused on nonsmokers. The researchers wanted to probe（探查）other sources of PAHs,ones that's would have been hard for an individual to avoid．The team started by testing the blood of each woman during pregnancy.The reason:Any PAHs in a woman's blood would also be available to the baby in her womb.Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child's mother a series of questions.These included whatever her child had problems doing things that needed sustained（长期的）mental effort, such as homework or games with friends. The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes .All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.S.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Perera and her team suspect. Some of these women had low levels of PAHs in their blood .Others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Nonsmoking mothers were selected because the effect of smoking on PAHs was unclear.A: RightB: WrongC:Not mentioned
考题
共用题干
ADHD Linked to Air PollutantsChildren have an increased of attention problems,seen as early as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pregnant. That's the finding of a new study.Released when things aren't burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs:the burning of fossil fuels, wood and trash.Frederica Perera works at Columbia University's Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects children's health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera's team focused on nonsmokers. The researchers wanted to probe（探查）other sources of PAHs,ones that's would have been hard for an individual to avoid．The team started by testing the blood of each woman during pregnancy.The reason:Any PAHs in a woman's blood would also be available to the baby in her womb.Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child's mother a series of questions.These included whatever her child had problems doing things that needed sustained（长期的）mental effort, such as homework or games with friends. The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes .All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.S.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Perera and her team suspect. Some of these women had low levels of PAHs in their blood .Others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. The main purpose of the research was to find out how exposure to PAHs played a role in har-ming the subjects' physical health.A:RightB: WrongC:Not mentioned
考题
共用题干
ADHD Linked to Air PollutantsChildren have an increased of attention problems,seen as early as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pregnant. That's the finding of a new study.Released when things aren't burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs:the burning of fossil fuels, wood and trash.Frederica Perera works at Columbia University's Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects children's health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera's team focused on nonsmokers. The researchers wanted to probe（探查）other sources of PAHs,ones that's would have been hard for an individual to avoid．The team started by testing the blood of each woman during pregnancy.The reason:Any PAHs in a woman's blood would also be available to the baby in her womb.Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child's mother a series of questions.These included whatever her child had problems doing things that needed sustained（长期的）mental effort, such as homework or games with friends. The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes .All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.S.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Perera and her team suspect. Some of these women had low levels of PAHs in their blood .Others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Kids with ADHD commonly fail in school.A:RightB: WrongC: Not mentioned
考题
共用题干
ADHD Linked to Air PollutantsChildren have an increased of attention problems,seen as early as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pregnant. That's the finding of a new study.Released when things aren't burned completely,this pollution is known as polycyclic aromatic hydrocarbons,or PAHs.The biggest sources of these PAHs:the burning of fossil fuels, wood and trash.Frederica Perera works at Columbia University's Mailman School of Public Health in New York City.She researches how exposure to things in the environment affects children's health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera's team focused on nonsmokers. The researchers wanted to probe（探查）other sources of PAHs,ones that's would have been hard for an individual to avoid．The team started by testing the blood of each woman during pregnancy.The reason:Any PAHs in a woman's blood would also be available to the baby in her womb.Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child's mother a series of questions.These included whatever her child had problems doing things that needed sustained（长期的）mental effort, such as homework or games with friends. The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes .All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.S.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Perera and her team suspect. Some of these women had low levels of PAHs in their blood .Others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. The women with high levels of PAHs in their blood were more likely to have kids with ADHD.A: RightB: WrongC: Not mentioned
考题
共用题干
第二篇Bullying at school can have serious and harmful negative effects.Because it causes such a problem for many schools,it is important that schools take the appropriate action to minimize its harmful effects.One of the most influential steps that a school can take against bullying is to research and develop a firm understanding of the specific types of bullying the students at the school are facing. Administrators should conduct monthly surveys that ask students about their experiences with bullying, such as whether they were bullied in the past month,whether they witnessed bullying and issues that they think the school administrators should have known about. Administrators should also survey the school's teachers to find out what they know about bullying.Another step that a school administration can take to prevent bullying is to train its teachers, administrators and students' parents about bullying. Hold seminars in your school district to teach parents about ways to communicate with their children if they are bullied at school.Conduct workshops with professional speakers or psychology experts about recognizing the signs of bullying in the classroom for teachers and administrators in your school district.Create newsletters for parents about detail strategies your school is taking to combat bullying or discuss new research on bullying in schools.Last but not least school administrators,teachers and school board members should work together to create a disciplinary plan to use when situations of bullying arise.Make teachers work together in groups to discuss the strategies that they use for dealing with bullying in their individual classrooms.Developing a plan when bullying arises is important in helping students realize that they will face consequences if they choose to bully their peers.Having a disciplinary system in place can help prevent bullying before it even begins.Why is the disciplinary plan important when bullying arises?A:Because students will face consequences if they bully others.B:Because school rules aren't complete without it.C:Because school bullying can hardly be prevented.D:Because students will follow the plan.
考题
Many people use wood stoves and fireplaces to heat their homes．Scientists have become worried about the smoke that they give off．Harmful chemicals are in the smoke．The smoke is causing air pollution．The pieces of pollution,called soot,are floating in the air．They are too tiny to see．Scientists must use a microscope to see them.
Small amounts of soot are safe,but large amounts can be dangerous．The govenment wants to limit this kind of pollution．It may stop people from using their fireplaces.
The air is tested every day．When soot levels are high,more than 65 micrograms of soot per cubic meter,factories must stop making smoke．The government thinks that limit should be much lower.
Factories produce the most smoke and soot．But the government thinks that all types of burning should be limited．The soot levels from factories and homes could be limited．Home owners may have to install new wood stoves that they comply with the new law．Or,they may not be able to bum on days when the air quality is bad.
Residents of some towns are fined if they violate the burning ban．Scientists hope these new regulations will make the air cleaner and less harmful to breathe.
What could home owners do to comply with the new regulation?A.Write a lette
B.Ask for permissio
C.Use more electricit
D.Install new low-soot fireplace
考题
Many people use wood stoves and fireplaces to heat their homes．Scientists have become worried about the smoke that they give off．Harmful chemicals are in the smoke．The smoke is causing air pollution．The pieces of pollution,called soot,are floating in the air．They are too tiny to see．Scientists must use a microscope to see them.
Small amounts of soot are safe,but large amounts can be dangerous．The govenment wants to limit this kind of pollution．It may stop people from using their fireplaces.
The air is tested every day．When soot levels are high,more than 65 micrograms of soot per cubic meter,factories must stop making smoke．The government thinks that limit should be much lower.
Factories produce the most smoke and soot．But the government thinks that all types of burning should be limited．The soot levels from factories and homes could be limited．Home owners may have to install new wood stoves that they comply with the new law．Or,they may not be able to bum on days when the air quality is bad.
Residents of some towns are fined if they violate the burning ban．Scientists hope these new regulations will make the air cleaner and less harmful to breathe.
Why is the air quality tested every day?A.Just in case someone ask
B.Scientists like to take test
C.Scientists are not very bus
D.To keep track of pollution level
考题
共用题干
第一篇Shift Work Link to Increased Risk of Heart ProblemsShift workers are slightly more at risk of having a heart attack or stroke than day workers,research suggests.An analysis of studies involving more than 2 million workers in the British Medical Journal said shift work can disrupt the body clock and have a negative effect on lifestyle.It has previously been linked to an increased risk of high blood pressure and diabetes.Limiting night shifts would help workers cope,experts said.The team of researchers from Canada and Norway analyzed 34 studies.In total,there were 17,359 coronary events of some kind,including cardiac arrests,6,598 heart attacks and 1,854 strokes caused by lack of blood to the brain.These events were more common in shift workers than in other people.The BMJ study calculated that shift work was linked to a 23%increased risk of heart attack,24% increased risk of coronary event and 5%increased risk of stroke.But they also said shift work was not linked to increased mortality rates from heart problems and that the relative risks associated with heart problems were"modest".Dan Hackam,associate professor at Western University,London, Ontario in Canada,said shift workers were more prone to sleeping and eating badly."Night shift workers are up all the time and they don't have a defined rest period.They are in a state of perpetual nervous system activation which is bad for things like obesity and cholesterol,"he said.The authors say that screening programs could help identify and treat risk factors for shift workers,such as high blood pressure and cholesterol levels.They add that shift workers could also be educated about what symptoms to look out for,which might indicate early heart problems.Jane White,research and information services manager at the Institution of Occupational Safety and Health,said there were complex issues surrounding shift work."It can result in disturbed appetite and digestion,reliance on sedatives and/or stimulants,as well as social and domestic problems."These can affect performance,increase the likelihood of errors and accidents at work,and even have a negative effect on health.She said the effects of shift work needed to be well managed."Avoiding permanent night shifts,limiting shifts to a maximum of 12 hours and ensuring workers have a minimum of two full nights'sleep between day and night shifts are simple,practical solutions that can help people to cope with shift work."From Paragraph Six it can be inferred that_________.A:shift workers have no good food to eatB:shift workers don't know how to define rest periodC:a worker of high cholesterol level is likely to suffer more from shift workD:shift workers have no place to sleep comfortably
考题
共用题干
第一篇Shift Work Link to Increased Risk of Heart ProblemsShift workers are slightly more at risk of having a heart attack or stroke than day workers,research suggests.An analysis of studies involving more than 2 million workers in the British Medical Journal said shift work can disrupt the body clock and have a negative effect on lifestyle.It has previously been linked to an increased risk of high blood pressure and diabetes.Limiting night shifts would help workers cope,experts said.The team of researchers from Canada and Norway analyzed 34 studies.In total,there were 17,359 coronary events of some kind,including cardiac arrests,6,598 heart attacks and 1,854 strokes caused by lack of blood to the brain.These events were more common in shift workers than in other people.The BMJ study calculated that shift work was linked to a 23%increased risk of heart attack,24% increased risk of coronary event and 5%increased risk of stroke.But they also said shift work was not linked to increased mortality rates from heart problems and that the relative risks associated with heart problems were"modest".Dan Hackam,associate professor at Western University,London, Ontario in Canada,said shift workers were more prone to sleeping and eating badly."Night shift workers are up all the time and they don't have a defined rest period.They are in a state of perpetual nervous system activation which is bad for things like obesity and cholesterol,"he said.The authors say that screening programs could help identify and treat risk factors for shift workers,such as high blood pressure and cholesterol levels.They add that shift workers could also be educated about what symptoms to look out for,which might indicate early heart problems.Jane White,research and information services manager at the Institution of Occupational Safety and Health,said there were complex issues surrounding shift work."It can result in disturbed appetite and digestion,reliance on sedatives and/or stimulants,as well as social and domestic problems."These can affect performance,increase the likelihood of errors and accidents at work,and even have a negative effect on health.She said the effects of shift work needed to be well managed."Avoiding permanent night shifts,limiting shifts to a maximum of 12 hours and ensuring workers have a minimum of two full nights'sleep between day and night shifts are simple,practical solutions that can help people to cope with shift work."Where can we probably see this article?A:On an issue of newspaper. B:On a magazine on health.C:On a textbook.D:On a sports magazine.
考题
共用题干
第一篇Shift Work Link to Increased Risk of Heart ProblemsShift workers are slightly more at risk of having a heart attack or stroke than day workers,research suggests.An analysis of studies involving more than 2 million workers in the British Medical Journal said shift work can disrupt the body clock and have a negative effect on lifestyle.It has previously been linked to an increased risk of high blood pressure and diabetes.Limiting night shifts would help workers cope,experts said.The team of researchers from Canada and Norway analyzed 34 studies.In total,there were 17,359 coronary events of some kind,including cardiac arrests,6,598 heart attacks and 1,854 strokes caused by lack of blood to the brain.These events were more common in shift workers than in other people.The BMJ study calculated that shift work was linked to a 23%increased risk of heart attack,24% increased risk of coronary event and 5%increased risk of stroke.But they also said shift work was not linked to increased mortality rates from heart problems and that the relative risks associated with heart problems were"modest".Dan Hackam,associate professor at Western University,London, Ontario in Canada,said shift workers were more prone to sleeping and eating badly."Night shift workers are up all the time and they don't have a defined rest period.They are in a state of perpetual nervous system activation which is bad for things like obesity and cholesterol,"he said.The authors say that screening programs could help identify and treat risk factors for shift workers,such as high blood pressure and cholesterol levels.They add that shift workers could also be educated about what symptoms to look out for,which might indicate early heart problems.Jane White,research and information services manager at the Institution of Occupational Safety and Health,said there were complex issues surrounding shift work."It can result in disturbed appetite and digestion,reliance on sedatives and/or stimulants,as well as social and domestic problems."These can affect performance,increase the likelihood of errors and accidents at work,and even have a negative effect on health.She said the effects of shift work needed to be well managed."Avoiding permanent night shifts,limiting shifts to a maximum of 12 hours and ensuring workers have a minimum of two full nights'sleep between day and night shifts are simple,practical solutions that can help people to cope with shift work."The following are complex issues resulting from shift work except__________.A:disturbed appetite and digestionB:dependence on sedatives and/or stimulantsC:problems related to social and family communicationD:stomach cancer
考题
共用题干
第一篇Shift Work Link to Increased Risk of Heart ProblemsShift workers are slightly more at risk of having a heart attack or stroke than day workers,research suggests.An analysis of studies involving more than 2 million workers in the British Medical Journal said shift work can disrupt the body clock and have a negative effect on lifestyle.It has previously been linked to an increased risk of high blood pressure and diabetes.Limiting night shifts would help workers cope,experts said.The team of researchers from Canada and Norway analyzed 34 studies.In total,there were 17,359 coronary events of some kind,including cardiac arrests,6,598 heart attacks and 1,854 strokes caused by lack of blood to the brain.These events were more common in shift workers than in other people.The BMJ study calculated that shift work was linked to a 23%increased risk of heart attack,24% increased risk of coronary event and 5%increased risk of stroke.But they also said shift work was not linked to increased mortality rates from heart problems and that the relative risks associated with heart problems were"modest".Dan Hackam,associate professor at Western University,London, Ontario in Canada,said shift workers were more prone to sleeping and eating badly."Night shift workers are up all the time and they don't have a defined rest period.They are in a state of perpetual nervous system activation which is bad for things like obesity and cholesterol,"he said.The authors say that screening programs could help identify and treat risk factors for shift workers,such as high blood pressure and cholesterol levels.They add that shift workers could also be educated about what symptoms to look out for,which might indicate early heart problems.Jane White,research and information services manager at the Institution of Occupational Safety and Health,said there were complex issues surrounding shift work."It can result in disturbed appetite and digestion,reliance on sedatives and/or stimulants,as well as social and domestic problems."These can affect performance,increase the likelihood of errors and accidents at work,and even have a negative effect on health.She said the effects of shift work needed to be well managed."Avoiding permanent night shifts,limiting shifts to a maximum of 12 hours and ensuring workers have a minimum of two full nights'sleep between day and night shifts are simple,practical solutions that can help people to cope with shift work."The underlined word"disrupt"in Paragraph Two can be replaced by_______.A:preventB:controlC:cut offD:throw into disorder
考题
共用题干
ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. The main purpose of the research was to find out how exposure to PAHs played a role in har-ming the subjects' physical health.A:RightB: WrongC: Not mentioned
考题
共用题干
ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Traffic and home heating were considered to be the biggest sources of PAHs for the subjects in the research.A: RightB: WrongC:Not mentioned
考题
共用题干
ADHD Linked to AIF PollutantsChildren have an increased of attention problems,seen asearly as grade school,if their no-ses inhaled（吸入）a certain type of air pollution when they were pre, ant.That,5 the finding ofa new study.Released when things aren't burned completely,this pollution 15 known as polycyclic aromatic hydrocarbons,or PAHs.Tlle higgest sources of these PAHs:the bunling of fossil fuels, wood and trash.Frederica Perera works at Columbia University,5 Mailman School of Public Health in New York City.She researclies how exposure to things in the environment affects children,5 health.In a new study,she and her team studied the exposure to air pollution of 233 nonsmokingpre,ant women in New York City.Because burning tobacco can spew（排放）PAHs into the air and lungs, Perera,5 team focused on nonsmokers.The researchers wanted to probe（探查）other sources of PA Hs,ones that,5 would have been hard for an individual to avoid.The team started by testing the blood of each woman during pregnancy.The reason:Any PA H 5 in a woman's blood would also be available to the baby in her womb．Nine years later,the researchers investigated signs of attention problems in those children,now age 9 .They asked each child’s mother a series of questions.These included whatever her child had prohlems doing things that needed sustained（长期的）mental effort,such as homework or games with friends.The sci-entists also asked if the kids had trouble following instructions or made frequent,careless mis-takes.All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD.About one in U.5.children has ADHD.Among the women studied,traffic and home heating were the primary sources of air pollution exposure,Pereraand her team suspect.Some of these women had low levels of PAHs in their blood.others had high levels.Those with high levels were five times as likely to have children who showed attention problems by age 9 .The new findings were published November 5 in the journal PLOS ONE. Kids with ADHD commonly fail in school.A: RightB: WrongC: Not mentioned
考题
设SC表中记录成绩的列为：Grade，类型为int。若在查询成绩时，希望将成绩按‘优’、‘良’、‘中’、‘及格’和‘不及格’形式显示，正确的Case函数是（）。A Case Grade When 90~100 THEN ’优’ When 80~89 THEN ’良’ When 70~79 THEN ’中’ When 60~69 THEN ’及格’ Else ’不及格’ EndB Case When Grade between 90 and 100 THEN Grade = ’优’ When Grade between 80 and 89 THEN Grade = ’良’ When Grade between 70 and 79 THEN Grade = ’中’ When Grade between 60 and 69 THEN Grade = ’及格’ Else Grade = ’不及格’ EndC Case When Grade between 90 and 100 THEN ’优’ When Grade between 80 and 89 THEN ’良’ When Grade between 70 and 79 THEN ’中’ When Grade between 60 and 69 THEN ’及格’ Else ’不及格’ EndDCase Grade When 90~100 THEN Grade = ’优’ When 80~89 THEN Grade = ’良’ When 70~79 THEN Grade = ’中’ When 60~69 THEN Grade = ’及格’ Else Grade = ’不及格’ End
考题
Five year old children are too young to go to school,（）A、are theyB、aren’t theyC、were theyD、have they
考题
单选题People won't pay attention to you when they still have a lot of ideas of their own crying ______ expression.A
fromB
overC
withD
for
考题
单选题The most significant finding of the original research was __________.A
lighting had no consistent effect on productionB
production sometimes increased when lighting was reduced to the level of ordinary moonlightC
that lighting was no more important than the other factors of temperature and humidityD
the results were unexpected and confusing
考题
问答题Advances in technology and science have solved many problems. However，they have also created new problems，among which pollution has attracted much attention of the public. Write a composition of about 400 words on the following topic，discussion the problems caused by pollution.ON POLLUTIONIn the first part of your writing you should present your thesis statement, and in the second part you should support the thesis statement with appropriate details. In the last part you should bring what you have written to a natural conclusion or a summary. Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.
考题
问答题The Environment in Perspective:Is Everything Getting Steadily Worse? Much of the discussion of environmental problems in the popular press leaves the reader with the impression that matters have been growing steadily worse, and that pollution is largely a product of the profit system and modern industrialization. There are environmental problems today that are both enormous and pressing, but in fact pollution is nothing new. Medieval cities were pestholes—the streets and rivers were littered with garbage and the air stank of rotting wastes. At the beginning of the eighteenth century, a German traveler reported that to get a view of London from the tower of St. Paul’s, one had to get there very early in the morning “before the air was full of coal smoke.” Since 1960 there has been progress in solving some pollution problems, much of it the result of concerted efforts to protect the environment. The quality of the air in most Canadian cities has improved. In Toronto, for example, the concentration of suspended particulates, or soot, in the air has fallen dramatically since 1962. To put this figure in perspective, it should be noted that the current health advisory level for the index is 32. At a level of 58, people with chronic respiratory diseases may be affected. At 100, even healthy people may be affected by prolonged conditions, and those with cardiac and respiratory diseases could suffer severe effects Recently in Toronto, the index has exceeded 32 on fewer than half a dozen days annually. Similar improvements have occurred elsewhere in Canada and in other industrialized countries. Even the famous, or rather infamous, “fogs” of London are almost a thing of the past. There have been two high readings of particular note in the British capital in 1959 (when the index rose to 275 and there was a 10 percent increase over the normal number of deaths) and in 1962 (when the index rose to 575 and there was a 20 percent increase in mortality). But more recently, London’s, cleaner air has resulted in an astounding 50 percent increase in the number of hours of winter sunshine. In short, pollution problems are not a uniquely modem phenomenon, nor is every part of the environment deteriorating relentlessly. Environmental problems do not occur exclusively in capitalist economies. For example, in the People’s Republic of China, coal soot from factory smokestacks in Beijing envelops the city in a thick black haze. Similarly, smoke from brown-coal furnaces pollutes the air almost everywhere in Eastern Europe. It has been estimated that a third of Poland’s citizens live in areas of “ecological disaster”. The citizens of Leipzig, a major industrial city in what was formerly East Germany, have a life expectancy a full six years shorter than the national average. However, we do not mean to suggest that all is well with the environment in market-oriented economies or that there is nothing more to do. While there have been some improvements, serious problems remain. Our world is now subject to a number of new pollutants, most of which are far more dangerous than those we have reduced, even though they may be less visible and less malodorous While environmental problems are neither new nor confined only to capitalist, industrialized economies, these facts are not legitimate grounds for complacency. The potential damage that we are inflicting on ourselves and on our surroundings is very real and very substantial.
考题
单选题设SC表中记录成绩的列为：Grade，类型为int。若在查询成绩时，希望将成绩按‘优’、‘良’、‘中’、‘及格’和‘不及格’形式显示，正确的Case函数是（）。A
Case Grade When 90~100 THEN ’优’ When 80~89 THEN ’良’ When 70~79 THEN ’中’ When 60~69 THEN ’及格’ Else ’不及格’ EndB
Case When Grade between 90 and 100 THEN Grade = ’优’ When Grade between 80 and 89 THEN Grade = ’良’ When Grade between 70 and 79 THEN Grade = ’中’ When Grade between 60 and 69 THEN Grade = ’及格’ Else Grade = ’不及格’ EndC
Case When Grade between 90 and 100 THEN ’优’ When Grade between 80 and 89 THEN ’良’ When Grade between 70 and 79 THEN ’中’ When Grade between 60 and 69 THEN ’及格’ Else ’不及格’ EndD
Case Grade When 90~100 THEN Grade = ’优’ When 80~89 THEN Grade = ’良’ When 70~79 THEN Grade = ’中’ When 60~69 THEN Grade = ’及格’ Else Grade = ’不及格’ End
考题
单选题What do we learn from the last paragraph?A
If we focus our attention on the thing, we might forget another.B
Memory depends to a certain extent on the environment.C
Repetition helps improve our memory.D
It we keep forgetting things, we’d better return to where we were.
热门标签
最新试卷