Within a few years he was ______ from an ordinary clerk to the manager of the company（）

A.In a few years, the average families will be within the reach of computers.

B.In a few years, buying computers will be within the reach of the average families.

C.In a few years, the average families will be within the reach of buying computers.

D.In a few years, the computers will be within the reach of the average families.

A．music

B．musician

In recent years scientific researchers【83】much time in the study of the process of aging. They believe that, within a few years, they will develop the knowledge and the【84】to delay the aging process for 10 to 15 years. The result will be that more people will live longer, more healthy lives.【85】, scientists believe that with the fight diet, exercise, medical【86】, and mental attitude many people can【87】100 years old.

Gerontologists, people who【88】studies of the growing old, are investigating why body cells show and【89】die. They feel that delaying this slowing down process would help postpone death. In a number of American universities, scientists are【90】the activity of cells, the effects of diet and internal body temperature【91】aging. If their studies are successful, the results should help【92】the quality of life for older people in the next few years,【93】increase the life span of the next generation.

(46)

根据以下内容回答题：

Scientists know that there are two basic approaches to prolonging life（延长寿命），one approache is the elimination of the diseases that generally affect older people—diseases such as cancer，heart attack and stroke．（1）is the delay of the process of growing-old the（2）of the body． In recent years scientific researchers（3）much time in the study of the process of aging．They believe that，within a few years，they will develop the knowledge and the（4）to delay the aging process for lo to 15 years．The result will be that more people will live longer，more healthful lives．At present，scientists believe that with the right diet，exercise，medical（5），and mental attitude many people can live to he l00 years old． Gerontologists（老年学专家），people who（6）studies of the problems of growing old，are investigating（7）body cells slow down and（8）die．They feel that delaying this slowing down process（9）help postpone death．In a number of American universities，scien-tists are studying the activity of cells，the effects of diet and internal body temperature on aging．If their studies are successful，the results should help（10）the quality of life for older people in the next few years，as well as increase the life span of the next generation．

1.

A.Others

B.Another

C.The other

D.One more

(判断)AIDS, fifty years ago, didn’t exist.Fifteen years ago a few doctors and public health officials noticed the first cases.Within a few years it was clear that it has now killed almost 14 million people around the world.

Four years ago doctors came up with the first treatment to make a dent in the spiraling death rate.Today that treatment works for some patients, but it’s not clear how long results will last.And still there is no cure.

For the nearly 35 million people around the world now living with HIV, there may never be a cure.Once cells are infected with HIV, it is very difficult — perhaps impossible ―to rid them of the virus.The only sure way to stop AIDS is to prevent infection in the first place, and only a vaccine can do that.

Unfortunately HIV is one of the most changeable viruses known to science.After more than a dozen years, it is still rather difficult to produce effective vaccine.

Still the billions of dollars spent on AIDS research over the past 20 years has not been wasted.As scientists learn more about how HIV survives in the human body, they are realizing that drugs alone may not be enough.To contain the virus effectively, it may take a balance between drug treatments that can keep HIV levels low and a strengthened immune system that can then target and destroy the remaining virus.Until scientists find a vaccine, however, they may control but never cure the century’s final scourge.

46.AIDS didn’t exist fifteen years ago.

47.Scientists have found a vaccine which can prevent HIV infection.

48.Although some treatment works for some patients with HIV, there is still no cure.

49.HIV is a changeable virus so that it is very difficult to produce effective vaccine.

50.We have wasted billions of dollars on AIDS research.

Music is an important way of expressing people's feelings and emotions. The【C1】______, for instance, from 1960 to 1969 will be【C2】______by many people as a period of social and political unrest in America.【C3】______this time, many people despaired【C4】______the music favored by the American teenagers.【C5】______, we must now admit that the music they loved was【C6】______a sign of the period and a【C7】______of the tensions and changes that were【C8】______American society. In the early sixties,【C9】______about social justice and equality were【C10】______by the song "Blowing in the Wind" which【C11】______the civil rights song "We Shall Overcome". The conflict concerning military【C12】______in Vietnam was sung about in 1965 in the【C13】______song "Eve of Destruction" and in the song "Ballad of the Green Beret". A few years【C14】______, a gradual shift in mood became【C15】______in one of the most popular songs which suggested calmer questions and possible answers even as some pop stars protested loudly【C16】______the draft. Finally, music as a【C17】______of the political and social process in America was highlighted at Woodstock, New York, where half of a million young people came【C18】______in 1969 to spend three days listening to songs that spanned the decade. This event was a symbol of the desire for【C19】______within a time of unrest. Woodstock was a【C20】______of hope in days of rage.

【C1】

A．decade

B．age

C．generation

D．era

A.hope

B.wait

C.look forward

D.expect

Within a few hours I noticed a large number of fish _______ at the water surface.

A、appearing

B touching

C producing

D interpreting