题目内容
You are only as old as you feel，it is said．But soon scientists will be able to calculate
your real” physiological（生理的）age”．
Researchers studying genes believe they can calculate exact physiological age by looking at a number of clues in DNA．They don’t have to ask people how they feel or look at their appearance．
The breakthrough could solve the mystery of why some 70-year-olds function at the level of those in their 50s，while others become frail（虚弱的）sooner than you would think．
The researchers made the breakthrough by finding the“biomarkers”of aging in tiny worms（虫子）．
The worms they studied had all average lifespan（寿命）of three weeks．Humans’ some remain live much longer than other similarly-aged worms，while others show signs of premature aging．
By genetically profiling（基因识别）104 different worms at various ages，the researchers found a group of genes that are involved in the aging process．
“This is a first step ;our results were not perfect，but we were able to predict the ages of the animals 70 percent of the time，which is far better than anything that has been done before．”said Sireon Melov the lead researcher at Buck Institute for Age Research in California.
Now they want to extend their studies to mice and eventually humans．
“I am confident that at some point there will be a non-subjective（主观的）method of determining how old someone is with a high level of confidence，”said Melov．
The speed at which people age depends on a number of things including genetic inheritance（遗传），lifestyle and mental health．
Determining chronological（按时间顺序的）age in both worms and humans is easy-count forward from birth．But determing physiological age has remained subjective－based on how someone looks or functions．
The findings have special meanings for age research in humans．Examining biomarker over time would provide a scientific basis for anti—aging medicines．The technology would also provide a means of determining whether a person is aging faster or slower than people would normally think．
1．The passage mainly talks about
A．the new finding of gene studying
B．the relationship between genes and the age
C．the breakthrough in mental health
D．biomarkers of aging, in tiny worms
2．The researchers’ next goal is to study
A．tiny worms B．biomarkers C．humans D．mice
3．Which of the following statements is TRUE?
A．The researchers have found biomarkers of ageing in humans．
B．The researchers are able to predict the ages of the humans 70 percent of the time．
C．People’s aging depends oil genetic inheritance，lifestyle and mental health，etc．
D．There will be a simple method of determining how old someone is．
4．In the future，scientists will ____
A．produce effective anti-ageing medicines
B．find a group of genes that are involved in the ageing process
C．determine physiological age subjectively
D．set up an institute to calculate humans’ real age
ADCA
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阳光同学一线名师全优好卷系列答案
ep well and have better weight control.Is there something that you've always wanted to try but just never had the time? Well, make plans to try it now since you are on summer vacation. Not all vacations call for taking a tour bus to take photos of famous landmarks. Some vacations allow you plenty of opportunities to learn.
The most difficult aspect of a learning vacation may be choosing one because the possibilities are endless. If you enjoy cooking, various companies can take you to Italy, France, Spain, Mexico or even Peru. Once there, you can learn to prepare the local cuisine(烹饪). Trips are often planned to fit in with local food festivals or special events.
The term “learning vacation” often brings language to mind. The best way to learn a language is in an environment where it's spoken. Study Spanish, French or English. Or attempt a more unusual language like Polish, Estonian or Thai. You'll be able to learn about the country and absorb the culture at the same time.
If you are fond of sports, you can polish your skills or learn new ones. Golf and tennis schools welcome players of all levels. If you want a bigger thrill, you can learn to surf, go climbing or race cars. It's even possible to learn the art and techniques of bull fighting while on vacation!
You can also discover our inner artist. Many places offer painting classes in different mediums. The scenic locations, of the schools offer plenty of subjects that provide inspiration for practice.
If you prefer capturing the world on film, take a photography vacation. Travel with a small group to photograph beautiful animals or scenery. You can also practise your technique on people or at historical sights.
Once you decide on a vacation, choose a company carefully. Request names of recent customers you can contact, and then ask them for an evaluation. The more you know before you go, the better prepared you'll be. Then go out and learn something!
【小题1】Why is it hard for you to decide on a learning vacation?
| A．Because it is hard for you to make plans. |
| B．Because the possibilities are unlimited. |
| C．Because there are many good foods from abroad. |
| D．Because there're too many food festivals or events. |
| A．the environment is fit for you to use the language |
| B．you are able to learn the original foreign language |
| C． native speakers offer you a lot of chances to practise |
| D．you can learn the language and experience its culture |
| A．Car racing. | B．Playing tennis. |
| C．Rock climbing. | D．Surfing. |
We have all experienced days when everything goes wrong．A day may begin well enough，but suddenly everything seems to get out of control．It seems as if a single unimportant event may cause a number of things to happen．Let us suppose that you are preparing a meal and keeping an eye on the baby at the same time．The telephone rings and this means your troubles are beginning．While you are on the phone，the baby pulls the table-cloth off the table，destroying your half-prepared meal．You hang up hurriedly and attend to your baby．Meanwhile，the meal gets burnt．As if this were not enough to bring you to tears，your husband arrives,unexpectedly bringing three guests to dinner．
Things can go wrong on a number of people on the road. During the rush hour one evening two cars hit each other and both drivers began to argue．The woman driver behind the two cars happened to be a learner．She suddenly got into a panic(恐慌)and stopped her car．This made the driver following her stop suddenly．His wife was sitting beside him holding a large cake．As she was thrown forward，the cake went right through the window and landed on the road．Seeing a cake flying through the air，a truck-driver had to stop his truck all of a sudden．The truck was carrying empty beer bottles and hundreds of them slid off the back of the truck on the road．This led to yet another angry argument．Meanwhile，the traffic piled up behind．It took the police nearly an hour to get the traffic on the move again．In the meanwhile，the truck-driver had to sweep up hundreds of broken bottles.Only two dogs were enjoying themselves from the accident，for they were happily having what was left of the cake．It was just one of those days!
1.In the writer’s opinion .
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A．accidents may happen anytime |
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B．troubles always come in groups |
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C．a small matter may cause great trouble |
|
D．anyone may have trouble any day |
2.What did the police do after the accident?
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A．They helped the driver clean up the road． |
|
B．They helped the drivers to go on with their journey． |
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C．They tried to stop the people from arguing． |
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D．They would find out who should be responsible for(有责任的)the accident． |
3.When the telephone rings .
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A．you’d better have your baby a little distant from your table before going to answer the phone |
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B．you’d better just let it ring all the way |
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C．you should never go to answer it in a hurry |
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D．you should answer it right away |
4.From the story we can see_________．
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A．some drivers are too careless |
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B．such accidents are rather strange |
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C．such accidents are very common |
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D．we don’t know why such accidents happen |