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In order to be able to _______ promptly to road hazards, drivers are advised to avoid using mobile phones while driving.
A.respond
B.require
C.prove
D.promise
B.require
C.prove
D.promise
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解析：
更多 “In order to be able to _______ promptly to road hazards, drivers are advised to avoid using mobile phones while driving.A.respond B.require C.prove D.promise” 相关考题
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A company is using RADIUS to authenticate login requests to its Juniper Networks routers. Usersshould still be able to authenticate using the local password database but only if the RADIUS server is unreachable. Which JUNOS software configuration accomplishes this goal?（）A. authentication-order radius;B. authentication-order password;C. authentication-order [radius password];D. authentication-order [password radius];
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to, retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.People buy cell phones for the following reasons EXCEPT that_______________.A:they're popularB:they're usefulC:they're convenient D:they're cheap
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to, retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The word"detected"in Paragraph 3 could be best replaced by______________.A:curedB:removedC:causedD:discovered
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to, retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.On the safety issue of mobile phones,the manufacturing companies______________.A:deny the existence of mobile phone radiationB:develop new technology to reduce mobile phone radiationC:try to prove that mobile phones are not harmful to healthD:hold that the amount of radiation is too small to worry about
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to, retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The writer's purpose of writing this article is to advise people______________.A:to buy mobile phonesB:to update regular phonesC:to stop using mobile phones D:to use mobile phones less often
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to, retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The salesman retired young because_______________.A:he disliked using mobile phonesB:he couldn't remember simple tasksC:he was tired of talking on his mobile phoneD:his employer's doctor persuaded him to
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第二篇Cell Phones : Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The writer's purpose of writing this article is to advise people_________.A:to buy mobile phonesB:to use mobile phones less oftenC:to update regular phones D:to stop using mobile phones
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第二篇Cell Phones : Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.People buy cell phones for the following reasons EXCEPT that_________.A:they're popularB:they're usefulC:they're cheapD:they're convenient
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第三篇 Mobile Phones : Are They about to Transform Our Lives?We love them so much that some of us sleep with them under the pillow,yet we are increasingly concerned that we cannot escape their electronic reach.We use them to convey our most intimate secrets,yet we worry that they are a threat to our privacy.We rely on them more than the Internet to cope with modern life,yet many of us don't believe advertisements saying we need more advanced services.Sweeping aside the doubts that many people feel about the benefits of new third generation phones and fears over the health effects of phone masts（天线竿）,a recent report claims that the long-term effects of new mobile technologies will be entirely positive so long as the public can be convinced to make use of them. Research about users of mobile phones reveals that the mobile has already moved beyond being a mere practicalcommunications tool to become the backbone（支柱）of modern social life,from love affairs to friendship to work.One female teacher,32,told the researchers:"I love my phone.It's my friend."The close relationship between user and phone is most pronounced among teenagers, the report says,who regard their mobiles as an expression of their identity.This is partly because mobiles are seen as being beyond the control of parents.But the researchers suggest that another reason may be that mobiles,especially text messaging,are seen as a way of overcoming shyness."Texting is often used for apologies,to excuse lateness or to communicate other things that make us uncomfortable,"the report says.The impact of phones,however,has been local rather than global,supporting existing friendships and networks,rather than opening users to a new broader community.Even the language of texting in one area can be incomprehensible to anybody from another area.Among the most important benefits of using mobile phones,the report claims,will be a vastly improved mobile infrastructure（基础设施）,providing gains throughout the economy, and the provision of a more sophisticated location-based services for users.The report calls on government to put more effort into the delivery of services by mobile phone,with suggestions including public transport and traffic information and doctors' text messages to remind patients of appointments."I love that idea,"one user said in an interview."It would mean I wouldn't have to write a hundred messages to myself."There are many other possibilities.At a recent trade fair in Sweden,a mobile navigation product was launched.When the user enters a destination,a route is automatically downloaded to their mobile and presented by voice,pictures and maps as they drive. In future , these devices will also be able to plan around congestion（交通堵塞）and road works in real time.Third generation phones will also allow for remote monitoring of patients by doctors. In Britain scientists are developing an asthma（哮喘）management solution,using mobiles to detect early signs of an attack.Which of the following statements is true?A:Modern social life relies significantly on the use of mobile phones.B:Mobile phones make romantic communication more difficult.C:Mobile phones encourage people to make friends.D:Mobile phones enable people of different countries to talk without translation.
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第三篇 Mobile Phones : Are They about to Transform Our Lives?We love them so much that some of us sleep with them under the pillow,yet we are increasingly concerned that we cannot escape their electronic reach.We use them to convey our most intimate secrets,yet we worry that they are a threat to our privacy.We rely on them more than the Internet to cope with modern life,yet many of us don't believe advertisements saying we need more advanced services.Sweeping aside the doubts that many people feel about the benefits of new third generation phones and fears over the health effects of phone masts（天线竿）,a recent report claims that the long-term effects of new mobile technologies will be entirely positive so long as the public can be convinced to make use of them. Research about users of mobile phones reveals that the mobile has already moved beyond being a mere practicalcommunications tool to become the backbone（支柱）of modern social life,from love affairs to friendship to work.One female teacher,32,told the researchers:"I love my phone.It's my friend."The close relationship between user and phone is most pronounced among teenagers, the report says,who regard their mobiles as an expression of their identity.This is partly because mobiles are seen as being beyond the control of parents.But the researchers suggest that another reason may be that mobiles,especially text messaging,are seen as a way of overcoming shyness."Texting is often used for apologies,to excuse lateness or to communicate other things that make us uncomfortable,"the report says.The impact of phones,however,has been local rather than global,supporting existing friendships and networks,rather than opening users to a new broader community.Even the language of texting in one area can be incomprehensible to anybody from another area.Among the most important benefits of using mobile phones,the report claims,will be a vastly improved mobile infrastructure（基础设施）,providing gains throughout the economy, and the provision of a more sophisticated location-based services for users.The report calls on government to put more effort into the delivery of services by mobile phone,with suggestions including public transport and traffic information and doctors' text messages to remind patients of appointments."I love that idea,"one user said in an interview."It would mean I wouldn't have to write a hundred messages to myself."There are many other possibilities.At a recent trade fair in Sweden,a mobile navigation product was launched.When the user enters a destination,a route is automatically downloaded to their mobile and presented by voice,pictures and maps as they drive. In future , these devices will also be able to plan around congestion（交通堵塞）and road works in real time.Third generation phones will also allow for remote monitoring of patients by doctors. In Britain scientists are developing an asthma（哮喘）management solution,using mobiles to detect early signs of an attack.The navigation product launched in Sweden is helpful to drivers because it canA:suggest the best route to get to a place.B:download maps of the area.C:tell them which roads are congested.D:show them how to avoid road works.
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Can Mobile Phones Cause Disease?1 "Mobile phone killed my man,"screamed one headline last year.Also came claimsthat an unpublished study had found that mobile phones cause memory loss.And a British newspaper devoted its front page to a picture supposedly（假定地）showing how mobile phones heat the brain.2 For anyone who uses a mobile phone,these are worrying times.But speak to the scientists whose work is the focus of these scares and you will hear a different story.According to them, there is no evidence that mobile phones cause cancer or any other illness in people.3 What we do have,however,are some results suggesting that mobile phones' emissions have a variety of strange effects on living tissue that can't be explained by the general radiation biology.And it's only when the questions raised by these experiments are answered that we'll be able to say for sure what mobile phones might be doing to the head.4 One of the odd effects comes from the now famous"memory loss"study.Alan Preece and his colleagues at the University of Bristol placed a device that imitated the microwave emissions of mobile phones to the left ear of volunteers.The volunteers were just as good at recalling words and pictures they had been shown on a computer screen whether or not the device was switched on.Preece says he still can't comment on the effects of using a mobile phone for years on end.But he rules out the suggestion that mobile phones have an immediate effect on our cognitive abilities."I'm pretty sure there is no effect on short-term memory,"he says.5 Another expert,Tattersall,remarked that his latest findings have removed fears about memory loss.One result, for instance, suggests that nerve cell synapses（突触） exposed to microwaves become more-rather than less-receptive（感受的）to undergoing changes linked to memory formation.6 Hopefully,microwaves might turn out to be good for you.It sounds crazy,but a couple of years ago a team led by William Adey at the Veterans Affairs Medical Center in California, found that mice exposed to microwaves for two hours a day were less likely to develop brain tumours when given a cancer-causing chemical.Tattersall said for sure that the________over memory loss caused by mobile phones was ungrounded.A:difterent messagesB:is hopedC:public attentionD:solid evidenceE:attracted public attentionF:public anxiety
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第二篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The writer's purpose of writing this article is to advise people___________.A:to buy mobile phonesB:to stop using mobile phonesC:to update regular phonesD:to use mobile phones less often
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Can Mobile Phones Cause Disease?1 "Mobile phone killed my man,"screamed one headline last year.Also came claimsthat an unpublished study had found that mobile phones cause memory loss.And a Britishnewspaper devoted its front page to a picture supposedly（假定地）showing how mobilephones heat the brain.2 For anyone who uses a mobile phone,these are worrying times.But speak to the scientists whose work is the focus of these scares and you will hear a different story.According to them, there is no evidence that mobile phones cause cancer or any other illness in people.3 What we do have,however, are some results suggesting that mobile phones' emissions have a variety of strange effects on living tissue that can't be explained by thegeneral radiation biology.And it's only when the questions raised by these experiments are answered that we'll be able to say for sure what mobile phones might be doing to the head.4 One of the odd effects comes from the now famous"memory loss" study.Alan Preeceand his colleagues at the University of Bristol placed a device that imitated the microwave emissions of mobile phones to the left ear of volunteers.The volunteers were just as good at recalling words and pictures they had been shown on a computer screen whether or notthe device was switched on.Preece says he still can't comment on the Effects of using a mobile phone for years on end.But he rules out the suggestion that mobile phones have an immediate effect on our cognitive abilities." I'm pretty sure there is no effect on short-termmemory,"he says.5 Another expert,Tattersall,remarked that his latest findings have removed fears about memory loss.One result, for instance, suggests that nerve cell synapses（突触） exposed to microwaves become more一rather than less一receptive（感受的）to undergoing changes linked to memory formation.6 Hopefully,microwaves might turn out to be good for you.It sounds crazy,but a couple of years ago a team led by William Adey at the Veterans Affairs Medical Center in California found that mice exposed to microwaves for two hours a day were less likely to develop brain tumours when given a cancer-causing chemical.Paragraph 2_________A:Bad ResultsB:Widespread OppositionC:Groundless AnxietyD:No Effect on Short-term MemoryE:Mysterious EffectsF:Further Reassurance
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today,In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with Young people.They find that the phones aremore than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mnobile phone only when you really need it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The word"detected"in Paragraph 3 could be best replaced by_________.A:curedB:removedC:discoveredD:caused
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today,In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with Young people.They find that the phones aremore than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mnobile phone only when you really need it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The writer's purpose of writing this article is to advise people__________.A:to use mobile phones less often B:to buy mobile phonesC:to update regular phonesD:to stop using mobile phones
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today,In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with Young people.They find that the phones aremore than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mnobile phone only when you really need it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.People buy cell phones for the following reasons EXCEPT that________.A:they're popular B:they're cheapC:they're useful D:they're convenient
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第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today,In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with Young people.They find that the phones aremore than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mnobile phone only when you really need it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.On the safety issue of mobile phones,the manufacturing companies___________.A:deny the existence of mobile phone radiationB:develop new technology to reduce mobile phone radiationC:try to prove that mobile phones are not harmful to healthD:hold that the amount of radiation is too small to worry about
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Can Mobile Phones Cause Disease?1 "Mobile phone killed my man,"screamed one headline last year.Also came claimsthat an unpublished study had found that mobile phones cause memory loss.And a Britishnewspaper devoted its front page to a picture supposedly（假定地）showing how mobilephones heat the brain.2 For anyone who uses a mobile phone,these are worrying times.But speak to the scientists whose work is the focus of these scares and you will hear a different story.According to them, there is no evidence that mobile phones cause cancer or any other illness in people.3 What we do have,however, are some results suggesting that mobile phones' emissions have a variety of strange effects on living tissue that can't be explained by thegeneral radiation biology.And it's only when the questions raised by these experiments are answered that we'll be able to say for sure what mobile phones might be doing to the head.4 One of the odd effects comes from the now famous"memory loss" study.Alan Preeceand his colleagues at the University of Bristol placed a device that imitated the microwave emissions of mobile phones to the left ear of volunteers.The volunteers were just as good at recalling words and pictures they had been shown on a computer screen whether or notthe device was switched on.Preece says he still can't comment on the Effects of using a mobile phone for years on end.But he rules out the suggestion that mobile phones have an immediate effect on our cognitive abilities." I'm pretty sure there is no effect on short-termmemory,"he says.5 Another expert,Tattersall,remarked that his latest findings have removed fears about memory loss.One result, for instance, suggests that nerve cell synapses（突触） exposed to microwaves become more一rather than less一receptive（感受的）to undergoing changes linked to memory formation.6 Hopefully,microwaves might turn out to be good for you.It sounds crazy,but a couple of years ago a team led by William Adey at the Veterans Affairs Medical Center in California found that mice exposed to microwaves for two hours a day were less likely to develop brain tumours when given a cancer-causing chemical.The safety problem with mobile phones has_________.A:different messagesB:is hopedC:public attentionD:solid evidenceE:attracted public attentionF:public anxiety
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共用题干
第一篇Cell Phones: Hang Up or Keep Talking?Millions of people are using cell phones today,In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with Young people.They find that the phones aremore than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning （扫描）equipment. In one case , a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mnobile phone only when you really need it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.The salesman retired young because____________.A:he disliked using mobile phonesB:he couldn't remember simple tasksC:he was tired of talking on his mobile phone D:his employer's doctor persuaded him to
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问答题Topic 2：My View on College Students’ Use of Mobile Phones Questions for reference: 1) What is the phenomenon of college students’ using mobile phones? 2) What might be the advantages and disadvantages of their using mobile phones? 3) What could be done to this problem?
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单选题What is the speaker’s main topic?A
Effects of using mobile phones on healthy human cells.B
Risks of developing cancer involved in the use of mobile phones.C
Damage to healthy cells caused by the use of mobile phones.D
The potential health hazards of mobile phones on humans.
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单选题A
drivers should be polite to cyclistsB
road accidents can actually be avoidedC
the pedestrians are a threat to road safetyD
walking while using phones hurts one's eyes
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单选题Which of the following is TRUE according to the passage?A
You should limit your mobile phone calls to personal affairs.B
You should speak quietly into your phone while in a church.C
You are supposed to turn off your mobile phone at a funeral.D
You are supposed to use your mobile phones as much as possible.
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单选题People put these signs on the road in order to ______.A
teach drivers lessonB
make drivers even saferC
stop cars going thereD
learn another kind of language
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单选题According to the passage, which of the following statements is NOT true?A
The potential health hazards of mobile phones call for further research.B
The Australian scientists find no connection between growth of tumors in human body and radiation from mobile phones.C
The Italian scientists’ belief is shared by other scientists.D
The British government inquiry didn’t establish any link between health risks and use of mobile phones.
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单选题A company is using RADIUS to authenticate login requests to its Juniper Networks routers. Usersshould still be able to authenticate using the local password database but only if the RADIUS server is unreachable. Which JUNOS software configuration accomplishes this goal?（）A
authentication-order radius;B
authentication-order password;C
authentication-order [radius password];D
authentication-order [password radius];
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单选题Some experts ______ that driving while talking on a cell phone is dangerous and ______ because it prevents drivers from devoting their full attention to the road.A
rescind, foolhardyB
deny, perilousC
contend, harmlessD
contest, inconvenientE
assert, distracting
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