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 communication 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 become 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. 小题1: A．excited B．frightening C．confusing D．brave 小题2: A．tired B．asleep C．conscious D．busy 小题3: A．So far B． After all C．However D．Therefore 小题4: A．long B． fast C．dangerous D．direct 小题5: A．fuel B．entertainment C．adjustment D．health 小题6: A．shut up B．held up C．brought up D．picked up 小题7: A．uneasy B．interested C．comfortable D．excited 小题8: A．pleasing B．annoying C．common D．valuable 小题9: A．noisy B．alone C．personal D．sociable 小题10: A．emphasis B．conflict C．power D．pressure 小题11: A．handle B．create C．affect D．investigate 小题12: A．becoming B．choosing C．ordering D．promoting