48.It is _____ of him to put everything in disorder in the room. He is so peculiar.
A. unconscious
B. aware
C. typical
D. unkind
正确答案是
49.John was young, _____, he was equal to this important task.
A. therefore
B. moreover
C. nevertheless
D. hence
正确答案是
50.Air is composed of _____ gases including hydrogen, oxygen and carbon dioxide.
A. varied
B. variant
C. variable
D. various
正确答案是
51.You can't let the situation get worse. You must take _____.
A. decisions
B. sides
C. directions
D. steps
正确答案是
52.It's difficult to _____ with the knowledge that he is a failure.
A. feed
B. live
C. stay
D. get on
正确答案是
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