B. accepting
C. pushing
D. setting
58.A. sitting
B. walking
C. working
D. fighting
59.A. of
B. from
C. on
D. with
60.A. think
B. feel
C. perform
D. succeed
Directions: For each blank in the following passage there are four words or phrases marked A,B,C and D. Fill in each blank with a word or phrase that best fits the context.
Being alone in outer space can be
36
. That is one reason why astronauts on solo(单独的) space flights were given plenty of work to keep them. 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(潜水艇) 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
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