Being alone in outer space can be 36 . That is one reason why astronauts on solo space flights were given plenty of work to keep them 37 . They were also in constant munication with people on the earth. 38 , being with people from whom you cannot get away might be even harder than being alone. This is what happens on long submarine(海底)voyages. It will also happen on 39 space flights in the future. Will there be special problems of adjustment under such conditions?
Scientists have studied the reactions of men to one another during long submarine voyages. They have also found that the longer the voyage lasts, the more serious the problem of 40 is. When men are 41 together for a long period, they begin to feel 42 . Everyone has little habits of speaking and behaving that are ordinarily acceptable. In the limited space over a long period of time, however, these little habits may bee very_ 43 .
Apparently, although no one wants to be 44 all the time, everyone needs some degree of privacy. When people are enclosed together, they are in what is called stress situation. That means that they are under an unusual amount of 45 or stress.
People who are well-adjusted are able to 46 stress situations better than others. That is one reason why so much care is taken in 47 our astronauts. These men undergo a long period of testing and training. One of the things tested is their behavior under stress, and thus they can do better than ordinary people.
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(答案→)B
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