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A.has been done
B.was done
C.have been done
D.were done
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更多“Much research( ) into the poss…”相关的问题
Most people learn best using a variety of _________, but traditional classes are an ideal(理想的)start for many people. They _______ an environment where you can practice under the ________ of someone who’s good at the language. We all lead ________ lives and learning a language takes _______. You will have more success if you study regularly, so try to develop a ________. It doesn’t matter if you haven’t got long. Becoming fluent in a language will take years, but learning to get by takes ________.
Many people start learning a language and soon give up. “I’m too _______,” they say. Yes, children do learn languages more _______ than adults, but research has shown that you can learn a language at any ________. And learning is good for the health of your brain, too. I’ve also heard people ________ about the mistakes they make when ________. Well, relax and laugh about your mistakes ________ you’re much less likely to make them again.
Learning a new language is never ________. But with some work and devotion, you’ll make progress. And you’ll be _________ by the positive reaction of some people when you say just a few words in ________ own language. Good luck!
1.A. technical B. political C. practical D. physical
2.A. After B. So C. Though D. Or
3.A. literature B. transport C. agriculture D. medicine
4.A. view B. knowledge C. form. D. database
5.A. paintings B. regulations C. methods D. computers
6.A. protect B. change C. respect D. provide
7.A. control B. command C. guidance D. pressure
8.A. busy B. happy C. simple D. normal
9.A. courage B. time C. energy D. place
10.A. theory B. business C. routine D. project
11.A. some risks B. a lot less C. some notes D. a lot more
12.A. old B. nervous C. weak D. tired
13.A. closely B. quickly C. privately D. quietly
14.A. age B. speed C. distance D. school
15.A. worry B. hesitate C. think D. quarrel
16.A. singing B. working C. bargaining D. learning
17.A. if B. and C. but D. before
18.A. tiresome B. hard C. interesting D. easy
19.A. blamed B. amazed C. interrupted D. informed
20.A. their B. his C. our D. your
In fact, the happiness lines on charts for men and women cross at about 5 p.m.when people 22 home.But by 8 p.m., women's happiness comes back after they have finished cooking and doing whatever they have to do, Carson says.
“For women, going to work is like an 23.Women think that nothing bad can happen at work.For the husband, work is where his 24 is on the line and home is like play,”Carson says.
What leads to happiness？ Part of it is handed 25 from birth.But a significant part of happiness 26 factors that you can influence: how much control you have over your life, if you have enough money to live on, if you have close personal 27 if you are doing something that challenges your mind and your skills.
Activities that make people happy are love or being loved, spare time activities and eating, 28 Carson.
Busy people are often eager to have some free time.But free time 29 won't make you happy.
“Generally when people have nothing to do, they don't feel happy.Free time is less happy-making than work.You have to 30 energy into making yourself happy.You have to make it happen.It doesn't happen on its own.”
21.A.same
B.opposite
C.similar
D.alike
22.A.leave
B.go
C.visit
D.are
23.A.emotion
B.animation
C.application
D.escape
24.A.intention
B.industry
C.identity
D.imagination
25.A.down
B.up
C.over
D.for
26.A.involves
B.interacts
C.interests
D.interferes
27.A.achievements
B.agreements
C.relationships
D.occupations
28.A.in spite of
B.according to
C.in regard to
D.opposite to
29.A.alone
B.lonely
C.alike
D.simple
30.A.involve
B.insist
C.invest
D.inspire
carbon “footprint”.That footprint reflects the amount of carbon dioxide that is emitted(排放)into the atmosphere as a result of someone’s daily activities.Carbon footprints tend to be low for city dwellers(城镇居民).Living in a suburb outside a city, however, can turn that footprint into a bootprint.
Energy researchers Christopher Jones and Daniel Kammen calculated carbon footprints for people in every zip code across the United States.People living in city centers had small footprints, the researchers found.“It is much easier to have a low carbon impact if your home is close to where you work, shop and play,” explains Jones.Living within walking or biking distance cuts back on the amount of carbon dioxide associated with moving people by cars.And cities with extensive bus and subway networks allow people to travel great distances while keeping releases of climate-altering greenhouse gases low.
Not everyone can afford to live in the city, however.And not everyone wants to.Rings of suburbs have popped up around major cities across the world.Suburbs offer more space, allowing people to build larger homes.Suburbs may offer better schools for a family’s kids.But those homes are typically well beyond walking distance from where their owners work, play or learn.So people who live in suburbs often drive long distances.
The new findings are an important contribution to climate research, says Matthew Kahn, an environmental economist at the University of California, who was not involved with the study.Kahn would like to see the analysis applied to other parts of the world — Europe, India and China, for instance.That would give scientists a better feel for how culture might mix with location to influence our carbon footprints.
21.“Footprint” refers to the amount of carbon dioxide released by ______.
A.an industry
B.an individual
C.a region
D.a country
22.What is the new finding concerning the footprints of people living in cities and those living in suburbs？()
A.The two are not at all comparable
B.The former are higher than the latter
C.The latter are higher than the former
D.The former are similar to the latter
23.What is the key factor mentioned to explain the new findings？()
A.Distance travelled by cars
B.Spending habits
C.Size of families
D.Attitude towards energy saving
24.What does Matthew Kahn think of the new findings？()
A.He is confused by the mixed messages
B.He thinks highly of them
C.He can easily understand them
D.He doubts their validity
25.What is the purpose of the author in writing the passage？()
A.To call on people to reduce carbon footprints
B.To offer tips on how to live a low-carbon life
C.To clear up misunderstandings about carbon emission
D.To introduce the research on carbon footprints
On the other hand, scientists are increasingly learning that aging and biological age are two different things, and that the former is a key risk factor for conditions such as heart disease, cancer and many more. In that light, aging itself might be seen as something treatable, the way you would treat high blood pressure or a vitamin deficiency.
Biophysicist Alex Zhavoronkov believes that aging should be considered a disease. He said that describing aging as a disease creates incentives to develop treatments.
"It unties the hands of the pharmaceutical (制药的.industry so that they can begin treating the disease and not just the side effects," he said.
"Right now, people think of aging as natural and something you can't control," he said. "In academic circles, people take aging research as just an interest area where they can try to develop interventions. The medical community also takes aging for granted, and can do nothing about it except keep people within a certain health range."
But if aging were recognized as a disease, he said, "It would attract funding and change the way we do health care. What matters is understanding that aging is curable."
"It was always known that the body accumulates damage," he added. "The only way to cure aging is to find ways to repair that damage. I think of it as preventive medicine for age-related conditions."
Leonard Hayflick, a professor at the University of California, San Francisco, said the idea that aging can be cured implies the human lifespan can be increased, which some researchers suggest is possible. Hayflick is not among them.
"There're many people who recover from cancer, stroke, or heart disease. But they continue to age, because aging is separate from their disease," Hayflick said. "Even if those causes of death were eliminated, life expectancy would still not go much beyond 92 years."
66.What do people generally believe about aging______
A.It should cause no alarm whatsoever.
B.They just cannot do anything about it.
C.It should be regarded as a kind of disease.
D.They can delay it with advances in science.
67.How do many scientists view aging now______
A.It might be prevented and treated.
B.It can be as risky as heart disease.
C.It results from a vitamin deficiency.
D.It is an irreversible biological process.
68.What does Alex Zhavoronkov think of "describing aging as a disease"______
A.It will prompt people to take aging more seriously.
B.It will greatly help reduce the side effects of aging.
C.It will free pharmacists from the conventional beliefs about aging.
D.It will motivate doctors and pharmacists to find ways to treat aging.
69.What do we learn about the medical community______
A.They now have a strong interest in research on aging.
B.They differ from the academic circles in their view on aging.
C.They can contribute to people's health only to a limited extent.
D.They have ways to intervene in people's aging process.
70.What does professor Leonard Hayflick believe______
A.The human lifespan cannot be prolonged.
B.Aging is hardly separable from disease.
C.Few people live up to the age of 92.
D.Heart disease is the major cause of aging.
Biologists today don’t expect that anyone will find a magical fountain of youth.Growing older is a natural part of the life cycle that can’t be reversed.As human beings grow older, organs such as the heart and lungs may stop functioning properly.Sight and hearing may become weak.And the human body becomes more likely to come down with serious illnesses from which it cannot recover.
Considered together, changes that bring about the decline of an organism are called aging.Because of aging, many biologists believe that there may be a maximum age limit to which even the healthiest organisms can live.For human beings, this maximum age limit is about 110 years.
Perhaps the most important thing that you can learn from your study of human biology is that you have a lot of control over the aging process in your own life.In fact, within our control are many physical and mental factors that have much to do with aging.For example, each of us, as recent research indicates, can do many things to help prevent heart and vessel disease, which causes half the death each year in the United States.We can avoid eating a lot of fatty meat.Eating too much of these types of animal fats can lead to the clogging and hardening of blood vessels.We can cut back on smoking and hopefully quit entirely.We can limit the amount of alcohol we drink and the amount of sugar we eat.We can exercise regularly and strengthen the heart and other organs.And we can remember to take time out each day for ourselves, time just relax.Exercise, recreation and relaxation all reduce stress – inner tension that is hard on all body organs.
One final thing we can do is to try to keep aware of advances made in health education.Information is often available free of charge from health clinics or schools.
1.Which of the following is the leading cause of death in the United States？
A.Heart disease.
B.Cancer
C.Alcohol
D.Smoking
2.What happens as people grow older？
A.They dream of a magic pill to help them live a happy and long life
B.They come down with serious illnesses
C.Their organs become weak and may stop working properly
D.Their blood vessels become clogged
3.In the opinion of biologists, _________.
A.the aging process can be reversed
B.the aging process can be controlled and slowed down
C.the aging process can be got rid of
D.the aging process can go beyond its limit
4.We can slow down the weakening of all our body organs by ______.
A.not eating animal fat
B.limiting drinking and smoking
C.exercise, recreation and relaxation to reduce stress
D.preventing the clogging and hardening of blood vessels
5.Besides physical and mental factors, which of the following also contributes to living a long and healthy life according tot the passage？
A.Health education
B.Traditional medicine
C.artificial organs
D.The invention of magic pills
A.Why the study is being conducte
B.What will be done in the study.
C.Who will be involved in the research study).
D.When study interventions will take plac
E.
A.refers
B.analysis
C.relationships
D.individuals
A.powerful
B.huge
C.energetic
D.efficient
