[单项选择]
Today TV audiences all over the world are accustomed to the sight of American astronauts in tip-top condition, with fair hair, crew-cuts, good teeth, an uncomplicated sense of humour and a severely limited non-technical vocabulary.
What marks out an astronaut from his earthbound fellow human beings is something of a difficult problem. Should you wish to interview him, you must apply beforehand, and you must be prepared for a longish wait, even it your application meets with success. It is, in any case, out of the question to interview an astronaut about his family life or personal activities, Because all the astronauts have contracts with an American magazine under conditions forbidding any unauthorized disclosures about their private lives.
Certain obvious qualities are needed. Anyone who would be a spaceman must be in perfect health, must have powers of concentration (since work inside a spacecraft is exceptionally demanding) and must have considerable courage.
A. his own business and privacy
B. secrets as far as interviews are concerned
C. the property of an American magazine
D. the first-rate national confidential information

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[单项选择]

Today TV audiences all over the world are accustomed to the sight of American astronauts in tip-top condition, with fair hair, crew-cuts, good teeth, an uncomplicated sense of humour and a severely limited non-technical vocabulary.
　　What marks out an astronaut from his earthbound fellow human beings is something of a difficult problem. Should you wish to interview him, you must apply beforehand, and you must be prepared for a longish wait, even if your application meets with success. It is, in any case, out of the question to interview an astronaut about his family life or personal activities, because all the astronauts have con- tracts with an American magazine under conditions forbidding any unauthorized disclosures about their private lives.
　　Certain obvious qualities are needed. Any would be spaceman must be in perfect health, must have powers of concentration ( since work inside a spacecraft is exceptionally demanding) and must have considerable courage. Ag
A. his own business and privacy.
B. secrets as far as interviews are concerned.
C. the property of an American magazine.
D. the first rate national confidential information.

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[单项选择]People all over the world today are beginning to hear and learn more and more about the problem of pollution. (14) Pollution is caused either by man’s release of completely new and often artificial (人造) substances into the environment, or by releasing greatly increased amounts of a natural substance (物质), such as oil from oil tankers into the sea.
Whatever its underlying reasons are, there is no doubt that much of the pollution caused could be controlled if only companies, individuals and governments would make more efforts. In the home there is an obvious need to control litter and waste. Food comes wrapped up three or four times in packages that all have to be disposed of; drinks are increasingly sold in bottles or tins which cannot be reused. This not only causes a litter problem, but also is a great waste of resources, in terms of glass, metal and paper. Advertising has helped this process by persuading many of us not only to buy thing we neither want nor need, b
A. the release of artificial or natural substances into the environment
B. the production of new industrial goods
C. increased amounts of a natural substance
D. our ever-increasing population

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