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资料：Placing the right type of workers in close proximity to each other can generate up to a 15 percent increase in organizational performance，according to the study from Cornerstone On Demand，a provider of cloud-based learning and talent-management software，and researchers at Harvard Business School in Massachusetts. For businesses with 2，000 employees, this translates into an additional $1 million in profit each year，the study said.
For the study，researchers examined data from a two-year period of more than 2，000 employees working at a large technology company with locations in the U.S. and Europe. The study’s authors separated workers into three different categories based on the work they produced：
Productive： These employees are very productive，but don’t always produce quality work.
Quality：These workers produce work of superior quality，but aren’t always productive.
Generalists： These employees are average in terms of both productivity and quality.
The researchers defined productivity by how long it takes an employee to finish a task，and effectiveness by how often employees need to ask a co-worker for help completing a task.
What is NOT true about the categories of the workers？
For the study，researchers examined data from a two-year period of more than 2，000 employees working at a large technology company with locations in the U.S. and Europe. The study’s authors separated workers into three different categories based on the work they produced：
Productive： These employees are very productive，but don’t always produce quality work.
Quality：These workers produce work of superior quality，but aren’t always productive.
Generalists： These employees are average in terms of both productivity and quality.
The researchers defined productivity by how long it takes an employee to finish a task，and effectiveness by how often employees need to ask a co-worker for help completing a task.
What is NOT true about the categories of the workers？
A.There is no particular order of these categories
B.Generalists are those who are neither productive nor effective
C.The frequency employees need to ask a co-worker for help completing a task is recorded as effectiveness
D.Productive workers are those who finish a task quickly
B.Generalists are those who are neither productive nor effective
C.The frequency employees need to ask a co-worker for help completing a task is recorded as effectiveness
D.Productive workers are those who finish a task quickly
参考答案
参考解析
解析：本题考查的是细节理解。
【关键词】NOT true about the categories of the workers
【主题句】第3自然段Productive： These employees are very productive，but don’t always produce quality work.
Quality：These workers produce work of superior quality，but aren’t always productive.
Generalists： These employees are average in terms of both productivity and quality.
The researchers defined productivity by how long it takes an employee to finish a task，and effectiveness by how often employees need to ask a co-worker for help completing a task.
高产出：这些员工非常有生产力，但并不总是产出高质量的工作。
高质量：这些工人生产的工作质量很高，但并不总是高效率的。
通才：这些员工的生产力和质量都很平均。
研究人员通过员工完成一项任务需要多长时间来定义工作效率，通过员工为完成任务每隔多长时间向同事寻求帮助来定义工作有效性。
【解析】本题的问题是“关于员工类别，哪一项不正确？”A选项“这些类别没有特定的顺序”；B选项“通才是那些既没有生产力又没有效率的人”；C选项“员工要求同事帮助完成任务的频率记录为有效性”；D选项“高产出工人是那些快速完成任务的人”。根据题目中关键词找到主题句，通才是生产力和质量平均的人，而非不具备生产力和效率的人，故选B。
【关键词】NOT true about the categories of the workers
【主题句】第3自然段Productive： These employees are very productive，but don’t always produce quality work.
Quality：These workers produce work of superior quality，but aren’t always productive.
Generalists： These employees are average in terms of both productivity and quality.
The researchers defined productivity by how long it takes an employee to finish a task，and effectiveness by how often employees need to ask a co-worker for help completing a task.
高产出：这些员工非常有生产力，但并不总是产出高质量的工作。
高质量：这些工人生产的工作质量很高，但并不总是高效率的。
通才：这些员工的生产力和质量都很平均。
研究人员通过员工完成一项任务需要多长时间来定义工作效率，通过员工为完成任务每隔多长时间向同事寻求帮助来定义工作有效性。
【解析】本题的问题是“关于员工类别，哪一项不正确？”A选项“这些类别没有特定的顺序”；B选项“通才是那些既没有生产力又没有效率的人”；C选项“员工要求同事帮助完成任务的频率记录为有效性”；D选项“高产出工人是那些快速完成任务的人”。根据题目中关键词找到主题句，通才是生产力和质量平均的人，而非不具备生产力和效率的人，故选B。
更多 “资料：Placing the right type of workers in close proximity to each other can generate up to a 15 percent increase in organizational performance，according to the study from Cornerstone On Demand，a provider of cloud-based learning and talent-management software，and researchers at Harvard Business School in Massachusetts. For businesses with 2，000 employees, this translates into an additional $1 million in profit each year，the study said. For the study，researchers examined data from a two-year period of more than 2，000 employees working at a large technology company with locations in the U.S. and Europe. The study’s authors separated workers into three different categories based on the work they produced： Productive： These employees are very productive，but don’t always produce quality work. Quality：These workers produce work of superior quality，but aren’t always productive. Generalists： These employees are average in terms of both productivity and quality. The researchers defined productivity by how long it takes an employee to finish a task，and effectiveness by how often employees need to ask a co-worker for help completing a task. What is NOT true about the categories of the workers？A.There is no particular order of these categories B.Generalists are those who are neither productive nor effective C.The frequency employees need to ask a co-worker for help completing a task is recorded as effectiveness D.Productive workers are those who finish a task quickly” 相关考题
考题
involves comparing actual or planned project practices to those of other projects to generate ideas for improvement and to provide a basis by which to measure performance． These other projects can be within the performing organization or outside of it，and can be within the same or in another application area．A．MetricsB．MeasurementC．BenchmarkingD．Baseline
考题
The buyers bid against each other and often _____the prices they pay so that the seller can profit from it.
A、fake B. C. D.B、close upC、diminishD、inflate
考题
Your network contains two offices named Office1 and Office2. The offices connect to each other by using a demand-dial connection.You add a new subnet in Office2.You need to ensure that a demand-dial connection starts when users attempt to connect to resources in the new Office2 subnet.What should you do from the Remote Routing and Access console？（）A. From the remote access server in Office2, right-click the demand-dial interface and click Connect.B. From the remote access server in Office1, right-click the demand-dial interface and click Connect.C. From the remote access server in Office1, right-click the demand-dial interface and click Update Routes.D. From the remote access server in Office2, right-click the demand-dial interface and click Update Routes.
考题
Passage FourYou have been badly injured in a car accident. It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident. However, special care must be taken in selecting new blood for you. If the blood is too different from your own, the transfusion could kill you.There are four basic types of blood; A, B, AB and O. A simple test can indicate a person's blood type. Everybody is born with one of these four types of blood. Blood type, like hair color and height, is inherited from parents.Because of substances contained in each type, the four groups must be transfused carefully. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. O can give to any other group, hence it is often called the universal donor. For the opposite reason, AB sometimes called the universal recipient. However, because so many reactions can occur in transfusions, patients usually receive only' salt or plasma until their blood can be matched as exactly as possible in the blood bank of a hospital. In this way, it is possible to avoid any bad reactions to the transfusion.There is a relationship between your blood type and your nationality. Among Europeans and people of European ancestry, about 42 percent have type A while 45 percent have type O. The rarest is type AB. Other races have different percentages. For example, some American Indian groups have nearly 100 percent type O.48. A good title for this passage is______.A. Getting Blood and PlasmaB. Special Blood and ColorsC. Human Blood TypesD. The Blood Bank of a Hospital
考题
If you use your commute to catch up on work email, that time "should be counted as part of the working day," according to a new study by researchers who analyzed thousands of commuters'online habits." If travel time were to count as work time, there would be many social and economic impacts." said Juhet Jain, one of the academics from the University of the West of England who surveyed several thousand commuters on trains in and out of London.
"Most respondents expressed how they consider their commute as time to 'catch up' with work, before or after their traditional working day," according to a summary of the study.“This transitional time also enabled people to switch roles, for example from being a parent getting the kids ready for 3 school in the morning to a business director during the day " The study quotes a working mother named Katheryn saying. "It's really important to my sanity that I can get work done on the tram. I am a busy mum and I rely on that time, so I can get things done”Another commuter, Andrew, told the researchers.'“It's dead time in a way so what it allows me to do is finish stuff and not work in the evenings." The study notes that while work rules vary around the world, some commuters in Norway are already "able to count travel time as part of their working day”
The findings on workers' use of smartphones and other devices to stay plugged in highight the importance of providing Wi-Fi to commuters, according to the academics, who presented their study at the Royal Geographical Society. To ollet the data, they focused on two train lines that boosted the amount of free Wi-Fi they offered. On the Birmingham to London line, 60 percent of commuters connected to the enhanced network. The results hint at what are likely to be increasingly complicated work-life discussions, in which employees and their bosses debate what qualifies as "work" and where the line between personal and professional time should be drawn. Discussing the results in a news release, Jain said, "It may ease commuter pressure on peak hours and allow for more comfort and flexibility around working times. However, it may also demand more survillance and accountability for productivity."
In addition to potential ramifications for mass transit that the British researchers highlighted,the idea of claiming commuting time on the clock could also appeal to workers who use other means of travel. Take, for instance, people who rely on ride. share companies to get to their jobs. And the discussion seems certain to widen in the near future, to inc lude a looming wave of self-driving cars that - in theory, at least -promises to free up more travel time for drivers.
As for rail commuters, the researchers said their work shows it s important that trains "“ffer a good working environment including tables , power。space and good continuous connectivity for internet and phone calls"
Norway serves as an example to show how workers' time during their commutes_
A. is becoming increasingly popular
B. benefits workers and their bosses
C. can be counted as part of their work
D. save both money and labor
考题
If you use your commute to catch up on work email, that time "should be counted as part of the working day," according to a new study by researchers who analyzed thousands of commuters'online habits." If travel time were to count as work time, there would be many social and economic impacts." said Juhet Jain, one of the academics from the University of the West of England who surveyed several thousand commuters on trains in and out of London.
"Most respondents expressed how they consider their commute as time to 'catch up' with work, before or after their traditional working day," according to a summary of the study.“This transitional time also enabled people to switch roles, for example from being a parent getting the kids ready for 3 school in the morning to a business director during the day " The study quotes a working mother named Katheryn saying. "It's really important to my sanity that I can get work done on the tram. I am a busy mum and I rely on that time, so I can get things done”Another commuter, Andrew, told the researchers.'“It's dead time in a way so what it allows me to do is finish stuff and not work in the evenings." The study notes that while work rules vary around the world, some commuters in Norway are already "able to count travel time as part of their working day”
The findings on workers' use of smartphones and other devices to stay plugged in highight the importance of providing Wi-Fi to commuters, according to the academics, who presented their study at the Royal Geographical Society. To ollet the data, they focused on two train lines that boosted the amount of free Wi-Fi they offered. On the Birmingham to London line, 60 percent of commuters connected to the enhanced network. The results hint at what are likely to be increasingly complicated work-life discussions, in which employees and their bosses debate what qualifies as "work" and where the line between personal and professional time should be drawn. Discussing the results in a news release, Jain said, "It may ease commuter pressure on peak hours and allow for more comfort and flexibility around working times. However, it may also demand more survillance and accountability for productivity."
In addition to potential ramifications for mass transit that the British researchers highlighted,the idea of claiming commuting time on the clock could also appeal to workers who use other means of travel. Take, for instance, people who rely on ride. share companies to get to their jobs. And the discussion seems certain to widen in the near future, to inc lude a looming wave of self-driving cars that - in theory, at least -promises to free up more travel time for drivers.
As for rail commuters, the researchers said their work shows it s important that trains "“ffer a good working environment including tables , power。space and good continuous connectivity for internet and phone calls"
what is the author' s attitude towards the study ?
A、neutral
B、critical
C、ndifferent
D、biased
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共用题干
第一篇Don't Be WorkaholicWorkaholic and working hard are quite different.Working hard involves being organized,focused,getting a lot of work done,knowing when to stop,and having a life other than work.Workaholics,on the other hand,are often disorganized,always find reasons for working more,feel lost without work to do,hide from problems through work, don't know how or when to relax,bring work home from the office,can't communicate well with fellow workers and family members and have unbalanced,one-dimensional lives.Workaholics,like those who are constantly drunk,suffer from a controlling habit,usually defined as compelling behavior despite negative consequences.They are sometimes pushed into their habit by their work beliefs,by workaholic role models,and by a work system that automatically sanctions workaholism,Despite lip service to the contrary,most employers want loyal employees who work longer hours,rewarding them with higher pay and better benefits.In many companies,workers unwilling to burn the midnight oil are at risk.Certainly,they hazard their jobs by working normal hours.Americans tend to become trapped in a working and spending consumption mode,driven by merchants,that leads them to rack up their expectations.According to some psychology counselors,workaholism can be both good and bad for us.It can fuel a sense of self-worth and accomplishment. And we get paid for it and praised for it,which produces good feelings we may not necessarily be able to attain in other parts of our lives.According to the passage,which of the following statements is correct?A:In all companies,workers unwilling to burn the midnight oil are at risk.B:Workaholism can only be bad for us.C:Working and spending consumption mode drives Americans to rack up to their expectations.D:The good feelings workaholism produces can be got in other parts of our lives.
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第三篇 Smart ExerciseDoctors are starting to find more and more information that suggests a connection between exercise and brain development.Judy Cameron,a scientist at Oregon Health and Science University,studies brain development.According to her research,it seems that exercise can make blood vessels,including those in the brain,stronger and more fully developed.Dr. Cameron claims this allows people who exercise to concentrate better. As she says:"While we already know that exercise is good for the heart,exercise can literally cause physical changes in the brain."The effects of exercise on brain development can even be seen in babies.Babies who do activities that require a lot of movement and physical activity show greater brain development than babies who are less physically active.With babies,even a{ittle movement can show big results. Margaret Barnes , a pediatrician（儿科医师）,believes in the importance of exercise.She thinks that many learning disabilities that children have in elementary school or high school can be traced back to a lack of movement as babies. "Babies need movement that stimulates their five senses.They need to establish a connection between motion and memory.In this way,as they get older,children will begin to associate physical activity with higher learning,"says Margaret. Older people can beef up their brains as well.Cornell University studied a group of seniors ranging in age from seventy to seventy-nine. Their study showed a short-term memory increase of up to 40 percent after exercising just three hours a week.The exercise does not have to be very difficult,but it does have to increase the heart rate.Also,just like the motion for infants,exercise for older people should involve some complexity.Learning some new skills or motions helps to open up memory paths in the brain that may not havebeen used for a long time.For most people,any type of physical activity that increases the heart rate is helpful. The main goal is to increase the brain's flow of blood.And your brain can benefit from as little as two to three hours of exercise a week. Research by Dr.Cameron seems to suggest that exercise canA: generate new blood vessels. B:change the way a person thinks.C: promote brain development. D: divert one's attention.
考题
You have been badly injured in a car accident．It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident．However,special care must be taken in selecting new blood for you．If the blood is too different from your own,the transfusion could kill you.
There are four basic types of blood;A,B,AB and O．A simple test can indicate a person's blood type．Everybody is born with one of these four types of blood．Blood type,like hair color and height,is inherited from parents.
Because of substances contained in each type,the four groups must be trans fused carefully．Basically,A and B cannot be mixed．A and B cannot receive AB,but AB may receive A or B．O can give to any other group,hence it is often called the universal donor．For the opposite reason,AB sometimes called the universal recipient．However,because so many reactions can occur in transfusions,patients usually receive only salt or plasma until their blood can be matched as exactly as possible in the blood bank of a hospital．In this way,it is possible to avoid any bad reactions to the transfusion.
There is a relationship between your blood type and your nationality．Among Europeans and people of European ancestry,about 42 percent have type A while 45 percent have type O．The rarest is type AB．Other races have different percentages．For example,some American Indian groups have nearly 100 percent type O.
If you need a transfusion,the best and safest blood for you is__.A.type AB
B.exactly the same type as yours
C.a mixture of salt,plasma and type O
D.type A
考题
You have been badly injured in a car accident．It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident．However,special care must be taken in selecting new blood for you．If the blood is too different from your own,the transfusion could kill you.
There are four basic types of blood;A,B,AB and O．A simple test can indicate a person's blood type．Everybody is born with one of these four types of blood．Blood type,like hair color and height,is inherited from parents.
Because of substances contained in each type,the four groups must be trans fused carefully．Basically,A and B cannot be mixed．A and B cannot receive AB,but AB may receive A or B．O can give to any other group,hence it is often called the universal donor．For the opposite reason,AB sometimes called the universal recipient．However,because so many reactions can occur in transfusions,patients usually receive only salt or plasma until their blood can be matched as exactly as possible in the blood bank of a hospital．In this way,it is possible to avoid any bad reactions to the transfusion.
There is a relationship between your blood type and your nationality．Among Europeans and people of European ancestry,about 42 percent have type A while 45 percent have type O．The rarest is type AB．Other races have different percentages．For example,some American Indian groups have nearly 100 percent type O.
The word“hence”in line 10 means__.A.always
B.often
C.therefore
D.seldom
考题
You have been badly injured in a car accident．It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident．However,special care must be taken in selecting new blood for you．If the blood is too different from your own,the transfusion could kill you.
There are four basic types of blood;A,B,AB and O．A simple test can indicate a person's blood type．Everybody is born with one of these four types of blood．Blood type,like hair color and height,is inherited from parents.
Because of substances contained in each type,the four groups must be trans fused carefully．Basically,A and B cannot be mixed．A and B cannot receive AB,but AB may receive A or B．O can give to any other group,hence it is often called the universal donor．For the opposite reason,AB sometimes called the universal recipient．However,because so many reactions can occur in transfusions,patients usually receive only salt or plasma until their blood can be matched as exactly as possible in the blood bank of a hospital．In this way,it is possible to avoid any bad reactions to the transfusion.
There is a relationship between your blood type and your nationality．Among Europeans and people of European ancestry,about 42 percent have type A while 45 percent have type O．The rarest is type AB．Other races have different percentages．For example,some American Indian groups have nearly 100 percent type O.
People with type A blood can receive__.A.AB
B.B
C.O
D.None of the above
考题
Text l Americans,we are told,believe in competition.But a shockingly large number of workers-30 million-are shackled by what are called"noncompetes,"which are agreements forbidding employees to leave their job to work for a competitor or to start their own competing business.And the number is growing fast.Once reserved for a corporation's most treasured rainmakers,noncompetes are now routinely applied to low-wage workers like warehouse employees,fast-food workers and even dog sitters.Like other anti-competitive practices,they poison our economy in larger,less perceptible ways.A report from the Treasury Department suggests that noncompetes should be banned for all employees,regardless of skill,industry or wage;they simply do more harm than good.Because laws governing noncompetes vary from state to state,we can analyze the effects of these kinds of contracts on wages,competition and labor mobility.The evidence shows wages in states that enforce noncompetes are 10 percent lower than in states that restrict their use.The Treasury Department concluded in its recent report that"by reducing workers'job options,noncompete agreements force workers to accept lower wages in their current jobs,and may sometimes induce workers to leave their occupations entirely,forgoing accumulated human capital."Workers shackled by noncompetes cannot rely on outside offers and free-market competition to fairly value their talents.Without incentives to increase wages in-house,companies can allow salaries to plateau.California and Massachusetts offer a case study within the high-tech industry.California strictly voids all noncompete agreements.Massachusetts,like most other states,enforces noncompetes.Both states enjoyed an early boom within the high-tech market,but California's Silicon Valley has continued growing,while Massachusetts has sputtered.In Massachusetts the enforcement of those agreements kept out new businesses by preventing people most likely to start new businesses-experienced former employees-from staying in the region.Meanwhile,in Silicon Valley,entrepreneurial activity flourished;thanks to California's refusal to enforce all noncompetes（including those from other jurisdictions）,it remains the tech center of the world.The best companies already realize the damaging effect of post-employment restrictions.Companies with little turnover risk becoming stagnant and short-sighted.In fact,relying on noncompetes rather than active recruitment and retention creates a market for lemons-a business will end up with employees who stay despite their unhappiness.Smart leaders treat departing employees as alumni,rather than sour exes in a divorce.But too many other employers have become increasingly inclined to bring disagreements with their former employees to court,relying on noncompetes rather than positive incentives to retain the best talent and reduce the competition.The liberty to move in the job market not only supports workers'choice,equality and wage growth but also creates the competition that catalyzes entrepreneurship,innovation and overall economic growth.If we want a healthy and free market,we should not shackle workers to the first business that offers them a job.Let them compete.
According to Paragraph 3,non-compete agreementsA.close down workers'job options
B.weaken workers'bargain power on wage
C.dissuade workers from staying
D.disrespect workers'potentials
考题
资料：Placing the right type of workers in close proximity to each other can generate up to a 15 percent increase in organizational performance，according to the study from Cornerstone On Demand，a provider of cloud-based learning and talent-management software，and researchers at Harvard Business School in Massachusetts. For businesses with 2，000 employees, this translates into an additional $1 million in profit each year，the study said.
For the study，researchers examined data from a two-year period of more than 2，000 employees working at a large technology company with locations in the U.S. and Europe. The study’s authors separated workers into three different categories based on the work they produced：
Productive： These employees are very productive，but don’t always produce quality work.
Quality：These workers produce work of superior quality，but aren’t always productive.
Generalists： These employees are average in terms of both productivity and quality.
The researchers defined productivity by how long it takes an employee to finish a task，and effectiveness by how often employees need to ask a co-worker for help completing a task.
What’s the main idea about the first paragraph？A.Cornerstone On Demand is a provider of cloud-based learning and talent-management software
B.Placing the right type of workers together will generate 15% increase in performance
C.Smarter seating can affect company’s performance
D.A study about how a firm get additional profit
考题
资料：Placing the right type of workers in close proximity to each other can generate up to a 15 percent increase in organizational performance，according to the study from Cornerstone On Demand，a provider of cloud-based learning and talent-management software，and researchers at Harvard Business School in Massachusetts. For businesses with 2，000 employees, this translates into an additional $1 million in profit each year，the study said.
For the study，researchers examined data from a two-year period of more than 2，000 employees working at a large technology company with locations in the U.S. and Europe. The study’s authors separated workers into three different categories based on the work they produced：
Productive： These employees are very productive，but don’t always produce quality work.
Quality：These workers produce work of superior quality，but aren’t always productive.
Generalists： These employees are average in terms of both productivity and quality.
The researchers defined productivity by how long it takes an employee to finish a task，and effectiveness by how often employees need to ask a co-worker for help completing a task.
What might be discussed later？A.The reason for better performances
B.The impact of seating employees close to each other
C.The findings of seating different categories of people
D.All above
考题
According to the third paragraph, researchers differed from each other in the problem of_____A. whether nuclear reaction would occur.
B. whether the stars would increase its density and temperature.
C. whether shock waves would occur.
D. whether the uneven forces would flatten the stars.
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Study Says Dogs Can Smell CancerDogs are known for their sense of smell. They can find missing people and things like bombs and illegal drugs .Now a study suggests that the animal known as man's best friend can even find bladder（膀胧）cancer.Cancer cells are thought to produce chemicals with unusual odors（气味）.Researchers think dogs have the ability to smell these odors,even in very small amounts,in urine（尿）.The sense of smell in dogs is thousands of times better than in humans.The study follows reports of cases where,for example,a dog showed great interest in a growth on the leg of its owner. The mole（痣）was later found to be skin cancer.Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment. The study involved urine collected from bladder cancer patie nts,from people with other diseases and from healthy people.Each dog was tested eight times.In each test there were seven samples for the dogs to smell.The dog was supposed to signal the one from a bladder cancer patient by lying down next to it.Two cocker spaniels（短腿长毛垂耳小猎犬）were correct fifty-six percent of the time. But the scientists reported an average success rate of forty-one percent.As a group,the study found that the dogs chose the correct sample twenty-two out of fifty-four times .That is almost three times more often than would be expected by chance alone.The British Medical Journal published the research .In all,thirty-six bladder cancer patients and one hundred and eight other people took part.During training,all the dogs reportedly even identified a cancer in a person who had testedhealthy before the study.Doctors found a growth on the person's right kidney（肾）.Bladder cancer is the ninth most common cancer worldwide.The International Agency for Research on Cancer says this disease kills more than one hundred thousand people each year. Doctors say cigarette smoking is the leading cause of bladder cancer.The person who had tested healthy before the study______.A: dropped outB: passed awayC: was found to have cancerD: was found to remain healthy
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第二篇Study Says Dogs Can Smell CancerDogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man's best friend can even find bladder（膀胱）cancer.Cancer cells are thought to produce chemicals with unusual odors（气味）. Researchers think dogs have the ability to smell these odors,even in very small amounts,in urine（尿）.The sense of smell in dogs is thousands of times better than in humans.The study follows reports of cases where,for example,a dog showed great interest in a growth on the leg of its owner.The mole（痣）was later found to be skin cancer.Carolyn Willis led a team of researchers at Arnersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from biadder cancer patients,from people with other diseases and from healthy people.Each dog was tested eight times.In each test there were seven samples for the dogs to smell.The dog was supposed to signal the one from a bladder cancer patient by lying down next to it,Two cocker spaniels（短腿长毛垂耳小猎犬）were correct fifty-six percent of the time.But the scientists reported an average success rate of forty-one percent.As a group,the study found that the dogs chose the correct sample twenty-two out of fifty-four times.That is almost three times more often than would be expected by chance alone.The British Medical Journal published the research.In all,thirty-six bladder cancer patients and one hundred and eight other people took part.During training,all the dogs reportedly even identified a cancer in a person who had tested healthy before the study,Doctors found a growth on the person's right kidney(肾）.Bladder cancer is the ninth most common cancer worldwide.The International Agency for Research on Cancer says this disease kills more than one hundred thousand people each year.Doctors say cigarette smoking is the leading cause of bladder cancer. The person who had tested healthy before the studyA:dropped out. B:passed away.C:was found to have cancer. D:was found to remain healthy.
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You have a computer that runs Windows 7. You generate a System Diagnostic Report and receive thefollowing warning message: The Graphics rating for the system is poor and may be the cause of performance problems. You need to increase the graphics performance of the computer without modifyingthe current hardware or drivers. What should you do?（）A、From Personalization， modify the screen saver.B、From Indexing Options， modify the Advanced options.C、From Performance Options， modify the visual effects.D、From Performance Options， modify the processor scheduling.
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单选题What can a culture camp help to do according to Peter Kassen?A
It helps the adopted kids form a correct attitude to their complex heritage.B
It helps the Chinese children have fun with their American parents.C
It helps the Americans increase the adoption from Russia and China.D
It helps the American parents adopt children from other countries.
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单选题In machinery space, the valves, pipes should be（）A
arranged as close to each other as possible to save spaceB
arranged far away from each other for convenient operationC
be fixed or clamped to avoid vibrationD
kept easy removable as to convenient repairing work
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单选题According to the passage, residents in the state of Mississippi saved last year from tax breaks about.A
$10 millionB
$47. 4 millionC
no statistics availableD
nearly a 3 percent increase
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单选题According to Paragraph 1, Cardus observed that.A
a composer can separate his language and harmonies from his own mind and sensibilityB
a composer can separate his language and harmonies from the mind and sensibility of an artistC
some people can separate the language and harmonies of a composer from his mind and sensibilityD
the language, harmonies, rhythms, melodies, colors and texture of a composer cannot be separated from each other
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单选题According to the passage,we can see that lower prices and better quality occur______.A
as a result of the effect of one on the otherB
always at the same timeC
independently of each otherD
when the demand exceeds the supply
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单选题An axial轴向 piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned （）.A
radially from the shaftB
parallel to each other and to the shaftC
parallel to each other but at a right angle to the shaftD
at an angle to each other and to the shaft
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单选题According to Nishida, the current buying decision by Toshiba is a response to ______A
fierce competition in nuclear power businessB
failure in other businesses like semiconductors and DVD playersC
popularity of nuclear power around the worldD
expected increase in market demand for nuclear power generation
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单选题The energy for pushing this piston up can be supplied from （）, so that the piston can keep moving up and down.A
the same pistonB
the piston nearbyC
the other pistonsD
the generators on board
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