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【单选题】
高等植物的先出现缺绿症,可能是缺乏( )A.
锰
B.
氮
C.
钙
D.
硫
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【单选题】Not only help him with his maths, but you should help him with his English. [ ]
A.
you should
B.
should you
C.
you will
D.
will you
【单选题】According to the information from the airline, a small sinking part of the runway of the airport is _____________ for the accident.
A.
to blame
B.
to be blamed
C.
to blaming
D.
to be blaming
【单选题】Everyone of us lives and works on a small part of the earth's surface, moves in a small circle, and of these acquaintances knows only a few intimately. Of any public event that has wide effects we see...
A.
man's life is also insignificant.
B.
man's opinions can not be accurate at all.
C.
human observations in general are all but partial.
D.
man can not have any opinion.
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