学历教育 - 英语考试
The course gives you basic 【instruction】 in car maintenance.
A.coaching
B.idea
C.term
D.aspect
查看答案
A.coaching
B.idea
C.term
D.aspect
共用题干
Batteries Built by Viruses
What do chicken pox,the common cold,the flu,and AIDS have in common?They're all diseases caused by viruses,tiny microorganisms that can pass from person to person. It's no wonder that when most people think about viruses,finding ways to steer clear of viruses is what's on people's minds.
Not everyone runs from the tiny disease carriers,though. In Cambridge,Massachu- setts,scientists have discovered that some viruses can be helpful in an unusual way. They are putting viruses to work,teaching them to build some of the world's smallest rechargeable batteries.
Viruses and batteries may seem like an unusual pair,but they're not so strange for engi-neer Angela Beicher,who first came up with the idea. At the Massachusetts Institute of
Technology(MIT)in Cambridge,she and her collaborators bring together different areas of science in new ways.In the case of the virus-built batteries,the scientists combine what they know about biology,technology and production techniques.
Beicher's team includes Paula Hammond,who helps put together the tiny batteries,and
Yet-Ming Chiang,an expert on how to store energy in the form of a battery.“We're working on things we traditionally don't associate with nature，”says Hammond.
Many batteries are already pretty small. You can hold A,C and D batteries in your hand. The coin-like batteries that power watches are often smaller than a penny. However, every year,new electronic devices like personal music players or cell phones get smaller than the year before. As these devices shrink,ordinary batteries won't be small enough to fit in-side.
The ideal battery will store a lot of energy in a small package. Right now,Belcher's model battery,a metallic disk completely built by viruses,looks like a regular watch battery. But inside,its components are very small一so tiny you can only see them with a powerful microscope.
How small are these battery parts?To get some idea of the size,pluck one hair from your head. Place your hair on a piece of white paper and try to see how wide your hair is一 pretty thin,right?Although the width of each person's hair is a bit different,you could probably fit about 10 of these virus-built battery parts,side to side,across one hair. These micro-batteries may change the way we look at viruses.
What is Belcher's team doing at present?
A: It is finding ways to get rid of viruses.
B: It is mass-producing micro-batteries.
C: It is making batteries with viruses.
D: It is analyzing virus genes.
查看答案
Batteries Built by Viruses
What do chicken pox,the common cold,the flu,and AIDS have in common?They're all diseases caused by viruses,tiny microorganisms that can pass from person to person. It's no wonder that when most people think about viruses,finding ways to steer clear of viruses is what's on people's minds.
Not everyone runs from the tiny disease carriers,though. In Cambridge,Massachu- setts,scientists have discovered that some viruses can be helpful in an unusual way. They are putting viruses to work,teaching them to build some of the world's smallest rechargeable batteries.
Viruses and batteries may seem like an unusual pair,but they're not so strange for engi-neer Angela Beicher,who first came up with the idea. At the Massachusetts Institute of
Technology(MIT)in Cambridge,she and her collaborators bring together different areas of science in new ways.In the case of the virus-built batteries,the scientists combine what they know about biology,technology and production techniques.
Beicher's team includes Paula Hammond,who helps put together the tiny batteries,and
Yet-Ming Chiang,an expert on how to store energy in the form of a battery.“We're working on things we traditionally don't associate with nature，”says Hammond.
Many batteries are already pretty small. You can hold A,C and D batteries in your hand. The coin-like batteries that power watches are often smaller than a penny. However, every year,new electronic devices like personal music players or cell phones get smaller than the year before. As these devices shrink,ordinary batteries won't be small enough to fit in-side.
The ideal battery will store a lot of energy in a small package. Right now,Belcher's model battery,a metallic disk completely built by viruses,looks like a regular watch battery. But inside,its components are very small一so tiny you can only see them with a powerful microscope.
How small are these battery parts?To get some idea of the size,pluck one hair from your head. Place your hair on a piece of white paper and try to see how wide your hair is一 pretty thin,right?Although the width of each person's hair is a bit different,you could probably fit about 10 of these virus-built battery parts,side to side,across one hair. These micro-batteries may change the way we look at viruses.
What is Belcher's team doing at present?
A: It is finding ways to get rid of viruses.
B: It is mass-producing micro-batteries.
C: It is making batteries with viruses.
D: It is analyzing virus genes.
共用题干
Smoking can Increase Depressive Symptoms in Teens
While some teenagers may use cigarettes to "self-medicate"（自我治疗）against the blues（忧郁）,sci-
entists at the University of Toronto and the University of Montreal have found that smoking may actually
______________
(51)depressive symptoms in some teens.
"This observational study is one of the few to examine the perceived ______________(52)benefits of
smoking among teens,"says lead researcher Michael Chaiton,a research associate at the Ontario Tobacco
Research Unit of the University of Toronto."_______________(53)cigarettes may appear to have self-medicating
effects or to improve mood,in the long_______________(54)we found that teens who started to smoke reported
higher depressive symptoms."
As part of the study,some 662 high school teenagers completed up to 20 questionnaires about their use
of cigarettes to ______________
(55)mood.Secondary schools were selected to provide a mix of French and
English participants,urban and rural schools,and schools ______________(56)in high,moderate and low so-
cioeconomic neighbourhoods.
Participants were divided into three
______________ (57):never smokers;smokers who did not use ciga-
rettes to self-medicate,improve mood or physical
______________ (58);smokers who used cigarettes to self-
medicate.Depressive symptoms were measured using a scale that asked how often participants felt too tired
to do things;had
______________ (59)going to sleep or staying asleep;felt unhappy,sad,or depressed;felt
hopeless about the future;felt anxious or tense;and worried too much about things.
" Smokers who used cigarettes as mood
______________( 60 ) had higher risks of elevated（提升）depres-
sive symptoms______________ (61)teens who had never smoked,"says co-researcher Jennifer O'Loughlin,a
professor at the University of Montreal Department of Social and Preventive Medicine."Our study found that
teen smokers who reported emotional benefits from smoking are_______________(62)higher risk of developing
depressive symptoms."
The______________ (63)between depression and'smoking exists______________(64)among teens that use
cigarettes to feel better."It's ______________(65)to emphasize that depressive symptom scores were higher
among teenagers who reported emotional benefits from smoking after they began to smoke,"says Dr. Chaiton.
_________(58)
A:beauty
B:state
C:world
D:activity
查看答案
Smoking can Increase Depressive Symptoms in Teens
While some teenagers may use cigarettes to "self-medicate"（自我治疗）against the blues（忧郁）,sci-
entists at the University of Toronto and the University of Montreal have found that smoking may actually
______________
(51)depressive symptoms in some teens.
"This observational study is one of the few to examine the perceived ______________(52)benefits of
smoking among teens,"says lead researcher Michael Chaiton,a research associate at the Ontario Tobacco
Research Unit of the University of Toronto."_______________(53)cigarettes may appear to have self-medicating
effects or to improve mood,in the long_______________(54)we found that teens who started to smoke reported
higher depressive symptoms."
As part of the study,some 662 high school teenagers completed up to 20 questionnaires about their use
of cigarettes to ______________
(55)mood.Secondary schools were selected to provide a mix of French and
English participants,urban and rural schools,and schools ______________(56)in high,moderate and low so-
cioeconomic neighbourhoods.
Participants were divided into three
______________ (57):never smokers;smokers who did not use ciga-
rettes to self-medicate,improve mood or physical
______________ (58);smokers who used cigarettes to self-
medicate.Depressive symptoms were measured using a scale that asked how often participants felt too tired
to do things;had
______________ (59)going to sleep or staying asleep;felt unhappy,sad,or depressed;felt
hopeless about the future;felt anxious or tense;and worried too much about things.
" Smokers who used cigarettes as mood
______________( 60 ) had higher risks of elevated（提升）depres-
sive symptoms______________ (61)teens who had never smoked,"says co-researcher Jennifer O'Loughlin,a
professor at the University of Montreal Department of Social and Preventive Medicine."Our study found that
teen smokers who reported emotional benefits from smoking are_______________(62)higher risk of developing
depressive symptoms."
The______________ (63)between depression and'smoking exists______________(64)among teens that use
cigarettes to feel better."It's ______________(65)to emphasize that depressive symptom scores were higher
among teenagers who reported emotional benefits from smoking after they began to smoke,"says Dr. Chaiton.
_________(58)
A:beauty
B:state
C:world
D:activity
共用题干
Have You Filled up the Form?
Of all things in the world,I most dislike filling up forms;in fact,I have a______(51)horror of it. Applying for a living license,______(52)for an evening course,booking a holiday abroad一everything nowadays seem to involve______(53)information about one's personal life and habits that has little or nothing to do with the matter______(54)hand.When applying for a job,it may be______(55)some obscure interest to a______(56)employer to learn that I collect stamp or had measles as a child,but why should he conceivably want to know that my father was a tobacconist who died in 1988?
The authorities who______(57)one to fill up forms,frequently demand answers to questions that one would hesitate to put______(58)one's intimate friends.The worst of it is that, when______(59)with such questions,my mind goes blank.Have I ever suffered from a serious illness?My mother always assured me I was"delicate".Do I suffer from any personal defects? Well,I wear contact lenses and my upper teeth are not my own,but perhaps the word"defects"______(60)to my character. Am I supposed to______(61)that I like gambling,and find it difficult to get up in the morning? Both of them are true.
Of all,I think job applications are the worst,"education”一previous experience一post heldgive______(62）…Terrified by the awful warning about giving false______(63)which appear at the bottom of the form,I struggle to remember what exams I passed and how long I worked for what firms.______(64)hard I try,there always seems to be a year or two for which I cannot satisfactorily account and which I am certain,if left______(65),will give the impression that I was in prison or engaged in some occupation too dubious to mention.
_________(55)
A:by
B:with
C:about
D:of
查看答案
Have You Filled up the Form?
Of all things in the world,I most dislike filling up forms;in fact,I have a______(51)horror of it. Applying for a living license,______(52)for an evening course,booking a holiday abroad一everything nowadays seem to involve______(53)information about one's personal life and habits that has little or nothing to do with the matter______(54)hand.When applying for a job,it may be______(55)some obscure interest to a______(56)employer to learn that I collect stamp or had measles as a child,but why should he conceivably want to know that my father was a tobacconist who died in 1988?
The authorities who______(57)one to fill up forms,frequently demand answers to questions that one would hesitate to put______(58)one's intimate friends.The worst of it is that, when______(59)with such questions,my mind goes blank.Have I ever suffered from a serious illness?My mother always assured me I was"delicate".Do I suffer from any personal defects? Well,I wear contact lenses and my upper teeth are not my own,but perhaps the word"defects"______(60)to my character. Am I supposed to______(61)that I like gambling,and find it difficult to get up in the morning? Both of them are true.
Of all,I think job applications are the worst,"education”一previous experience一post heldgive______(62）…Terrified by the awful warning about giving false______(63)which appear at the bottom of the form,I struggle to remember what exams I passed and how long I worked for what firms.______(64)hard I try,there always seems to be a year or two for which I cannot satisfactorily account and which I am certain,if left______(65),will give the impression that I was in prison or engaged in some occupation too dubious to mention.
_________(55)
A:by
B:with
C:about
D:of
I doubt they'll be able to help but it's worth trying.
A:growing
B:wrapping
C:hiding
D:attempting
查看答案
A:growing
B:wrapping
C:hiding
D:attempting
共用题干
第二篇
Electric Backpack
Backpacks are convenient. They can hold your books,your lunch,and a change of clothes,leaving your
hands free to do other things.Someday,if you don't mind carrying a heavy load,your backpacks might also
power your MP3 player,keep your cell phone running,and maybe even light your way home.
Lawrence C.Rome and his colleagues from the University of Pennsylvania in Philadelphia and the
Marine Biological Laboratory in Woods Hole,Mass.,have invented a backpack that makes electricity from
energy produced while its wearer walks.In military actions,search-and-rescue operations,and scientific field
studies,people rely increasingly on cell phones,global positioning system(GPS)receivers,night-vision
goggles,and other battery-powered devices to get around and do their work. The backpack's electricity-generating
feature could dramatically reduce the amount of a wearer's load now devoted to spare batteries,report Rome
and his colleagues in the Sept.Science.
The backpack's electricity-creating powers depend on springs used to hang a cloth pack from its metal
frame.The frame sits against the wearer's back,and the whole pack moves up and down as the person
walks.A gear mechanism converts vertical movements of the pack to rotary motions of an electrical generator,
producing up to 7.4 watts.
Unexpectedly tests showed that wearers of the new backpack alter their gaits in response to the pack's
oscillations,so that they carry loads more comfortably and with less effort than they do ordinary backpacks.
Because of that surprising advantage,Rome plans to commercialize both electric and non-electric versions of
the backpack.
The backpack could be especially useful for soldiers,scientists,mountaineers,and emergency workers
who typically carry heavy backpacks.For the rest of us,power-generating backpacks could make it possible to
walk,play video games,watch TV,and listen to music,all at the same time.Electricity-generating packs
aren't on the market yet,but if you do get one eventually,just make sure to look both ways before crossing
the street!
According to Paragraph 4,what does Rome plan to do?
A:To make the backpack more comfortable for the wearer.
B:To put the backpack on the market.
C:To test the advantage of the backpack.
D:To promote the backpack in a newspaper or on television.
查看答案
第二篇
Electric Backpack
Backpacks are convenient. They can hold your books,your lunch,and a change of clothes,leaving your
hands free to do other things.Someday,if you don't mind carrying a heavy load,your backpacks might also
power your MP3 player,keep your cell phone running,and maybe even light your way home.
Lawrence C.Rome and his colleagues from the University of Pennsylvania in Philadelphia and the
Marine Biological Laboratory in Woods Hole,Mass.,have invented a backpack that makes electricity from
energy produced while its wearer walks.In military actions,search-and-rescue operations,and scientific field
studies,people rely increasingly on cell phones,global positioning system(GPS)receivers,night-vision
goggles,and other battery-powered devices to get around and do their work. The backpack's electricity-generating
feature could dramatically reduce the amount of a wearer's load now devoted to spare batteries,report Rome
and his colleagues in the Sept.Science.
The backpack's electricity-creating powers depend on springs used to hang a cloth pack from its metal
frame.The frame sits against the wearer's back,and the whole pack moves up and down as the person
walks.A gear mechanism converts vertical movements of the pack to rotary motions of an electrical generator,
producing up to 7.4 watts.
Unexpectedly tests showed that wearers of the new backpack alter their gaits in response to the pack's
oscillations,so that they carry loads more comfortably and with less effort than they do ordinary backpacks.
Because of that surprising advantage,Rome plans to commercialize both electric and non-electric versions of
the backpack.
The backpack could be especially useful for soldiers,scientists,mountaineers,and emergency workers
who typically carry heavy backpacks.For the rest of us,power-generating backpacks could make it possible to
walk,play video games,watch TV,and listen to music,all at the same time.Electricity-generating packs
aren't on the market yet,but if you do get one eventually,just make sure to look both ways before crossing
the street!
According to Paragraph 4,what does Rome plan to do?
A:To make the backpack more comfortable for the wearer.
B:To put the backpack on the market.
C:To test the advantage of the backpack.
D:To promote the backpack in a newspaper or on television.
共用题干
Early Ideas about the Universe
1 Early man got his ideas about the universe by looking at the stars as you do.He
observed carefully,and learned many things about the sun,the moon,and the stars.
2 Suppose you were asked to collect evidence about the sun as early man did.You might
go out morning after morning and see it come up in the east.Even on cloudy mornings,you
would observe that the darkness goes away and the world becomes light.You might not see
the sun but would be sure it is there,because you notice that the earth warms up.As you
continued,the sun climbs higher in the sky each day during part of the year. It stays in the
sky longer. The earth gets warmer. Things begin to grow. It is spring and then summer.
3 After a while the sun stays in the sky for shorter and shorter periods.Many plants begin
to die.Leaves fall.Winter comes.Year after year this is repeated and you cannot tell
exactly why it happens.But you realize that the sun seems to make the difference.
Primitive（原始的）man felt that since the sun was so powerful it must be a god. It may
seem silly to us now to worship（崇拜）a sun-god, but primitive man was right about the
importance of the sun to life on earth.
4 You have been told that the world is round.But suppose no one had ever taught you
that the world was like a huge ball.Would you have ever thought of it yourself?You cannot
see the curve（曲线）of the earth at once. You would have no idea of how big it was.
That's why early man believed that the earth was small and flat.Such ideas appeared from
the evidence they had.
5 If you watch the stars night after night,you will see them rise and set.As you look at
the sky,it is not difficult to imagine that you are in the center of a vast collection of twinkling
（闪烁）lights. Some early astronomers（天文学家）believed the sky was a crystal shell or
series of crystal shells,one inside the other. They believed this because that is what the
night sky looked like.For many centuries,men believed that the earth was the center of
the universe and that the sun,the moon,and the stars circled around it.
Early man thought the earth was small and flat because_________.
A:he did not observe the sun carefully enough
B:he could not see its curve
C:the sun,the moon and the stars seemed to move around it
D:the earth circles around the sun
E:it looked like that at night
F:it has power over life on earth
查看答案
Early Ideas about the Universe
1 Early man got his ideas about the universe by looking at the stars as you do.He
observed carefully,and learned many things about the sun,the moon,and the stars.
2 Suppose you were asked to collect evidence about the sun as early man did.You might
go out morning after morning and see it come up in the east.Even on cloudy mornings,you
would observe that the darkness goes away and the world becomes light.You might not see
the sun but would be sure it is there,because you notice that the earth warms up.As you
continued,the sun climbs higher in the sky each day during part of the year. It stays in the
sky longer. The earth gets warmer. Things begin to grow. It is spring and then summer.
3 After a while the sun stays in the sky for shorter and shorter periods.Many plants begin
to die.Leaves fall.Winter comes.Year after year this is repeated and you cannot tell
exactly why it happens.But you realize that the sun seems to make the difference.
Primitive（原始的）man felt that since the sun was so powerful it must be a god. It may
seem silly to us now to worship（崇拜）a sun-god, but primitive man was right about the
importance of the sun to life on earth.
4 You have been told that the world is round.But suppose no one had ever taught you
that the world was like a huge ball.Would you have ever thought of it yourself?You cannot
see the curve（曲线）of the earth at once. You would have no idea of how big it was.
That's why early man believed that the earth was small and flat.Such ideas appeared from
the evidence they had.
5 If you watch the stars night after night,you will see them rise and set.As you look at
the sky,it is not difficult to imagine that you are in the center of a vast collection of twinkling
（闪烁）lights. Some early astronomers（天文学家）believed the sky was a crystal shell or
series of crystal shells,one inside the other. They believed this because that is what the
night sky looked like.For many centuries,men believed that the earth was the center of
the universe and that the sun,the moon,and the stars circled around it.
Early man thought the earth was small and flat because_________.
A:he did not observe the sun carefully enough
B:he could not see its curve
C:the sun,the moon and the stars seemed to move around it
D:the earth circles around the sun
E:it looked like that at night
F:it has power over life on earth
A dry-steam reservoir produces steam with _____.
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
查看答案
A.the energy to turn a turbine
B.impermeable rock
C.one or two separators
D.turbine operator
E.little or no water
F.hot springs
共用题干
Travel Across Africa
For six hours we shot through the barren（荒芜的）landscape of the Karoo desert in
South Africa. Just rocks and sand and baking sun. Knowing our journey was ending,Daniel and I just wanted to remember all we had seen and done. He used a camera. I used words. I had already finished three notebooks and was into the fourth,a beautiful leather notebook I'd bought in a market in Mozambique.
Southern Africa was full of stories and visions.We were almost drunk on sensations,the roaring（咆哮）of the water at Victoria Falls, the impossible silence of the Okavango Delta in Botswana.
And then the other things:dogs in the streets,whole families in Soweto living in one room,a kilometre from clean water.
As we drove towards the setting sun,a quietness fell over us. The road was empty一we hadn't seen another car for hours.And as I drove,something caught my eye,something moving close enough to touch them,to smell their hot breath. I didn't know how long they had been there next to us.
I shouted to Dan:“Look!”But he was in a deep sleep,his camera lying useless by his feet. They raced the car for a few seconds,then disappeared far behind us,a memory of he- roic forms in the red landscape.
When Daniel woke up an hour later I told him what had happened.
”Wild horses?”he said.”Why didn't you wake me up,Sophia?”
”I tried. But they were gone after a few seconds.”
”Are you sure you didn't dream it?”
”You were the one who was sleeping!”
”Typical”,he said.”The best photos are the ones we never take.”
We checked into a dusty hotel and slept the sleep of the dead.
While driving Daniel and Sophia saw wild horses.
A:Right
B: Wrong
C: Not mentioned
查看答案
Travel Across Africa
For six hours we shot through the barren（荒芜的）landscape of the Karoo desert in
South Africa. Just rocks and sand and baking sun. Knowing our journey was ending,Daniel and I just wanted to remember all we had seen and done. He used a camera. I used words. I had already finished three notebooks and was into the fourth,a beautiful leather notebook I'd bought in a market in Mozambique.
Southern Africa was full of stories and visions.We were almost drunk on sensations,the roaring（咆哮）of the water at Victoria Falls, the impossible silence of the Okavango Delta in Botswana.
And then the other things:dogs in the streets,whole families in Soweto living in one room,a kilometre from clean water.
As we drove towards the setting sun,a quietness fell over us. The road was empty一we hadn't seen another car for hours.And as I drove,something caught my eye,something moving close enough to touch them,to smell their hot breath. I didn't know how long they had been there next to us.
I shouted to Dan:“Look!”But he was in a deep sleep,his camera lying useless by his feet. They raced the car for a few seconds,then disappeared far behind us,a memory of he- roic forms in the red landscape.
When Daniel woke up an hour later I told him what had happened.
”Wild horses?”he said.”Why didn't you wake me up,Sophia?”
”I tried. But they were gone after a few seconds.”
”Are you sure you didn't dream it?”
”You were the one who was sleeping!”
”Typical”,he said.”The best photos are the ones we never take.”
We checked into a dusty hotel and slept the sleep of the dead.
While driving Daniel and Sophia saw wild horses.
A:Right
B: Wrong
C: Not mentioned
共用题干
School Lunch
Research has shown that over half the children in Britain who take their own lunches to school do not eat_______(51)in the middle of the day.In Britain schools have to_______(52)meals at lunchtime.Children can_______(53)to bring their own food or have lunch at the school canteen.
One shocking_______(54)of this research is that school meals are much healthier than lunches prepared by parents.There are strict_______(55)for the preparation of school meals,which have to include one_______(56)of fruit and one of vegetables,as well as meat,a dairy item and starchy food like bread or pasta. Lunchboxes_______(57)by researchers contained sweet drinks, crisps and chocolate bars.Children_______(58)twice as much sugar as they should at lunchtime.
The research will provide a better_______(59)of why the percentage of overweight students in Britain has_______(60)in the last decade.Unfortunately,the government cannot_______(61)parents,but it can remind them of the_______(62)value of milk,fruit and vegetables. Small changes in their children's diet can_______(63)their future health,Children can easily develop bad eating_______(64)at this age,and parents are the only ones who can_______(65) it.
_________(53)
A:prefer
B:manage
C:want
D:choose
查看答案
School Lunch
Research has shown that over half the children in Britain who take their own lunches to school do not eat_______(51)in the middle of the day.In Britain schools have to_______(52)meals at lunchtime.Children can_______(53)to bring their own food or have lunch at the school canteen.
One shocking_______(54)of this research is that school meals are much healthier than lunches prepared by parents.There are strict_______(55)for the preparation of school meals,which have to include one_______(56)of fruit and one of vegetables,as well as meat,a dairy item and starchy food like bread or pasta. Lunchboxes_______(57)by researchers contained sweet drinks, crisps and chocolate bars.Children_______(58)twice as much sugar as they should at lunchtime.
The research will provide a better_______(59)of why the percentage of overweight students in Britain has_______(60)in the last decade.Unfortunately,the government cannot_______(61)parents,but it can remind them of the_______(62)value of milk,fruit and vegetables. Small changes in their children's diet can_______(63)their future health,Children can easily develop bad eating_______(64)at this age,and parents are the only ones who can_______(65) it.
_________(53)
A:prefer
B:manage
C:want
D:choose