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【单选题】
The flu is believed _____ by viruses that like to reproduce in the cells inside the human nose and throat.
[ ]
A.
causing
B.
being caused
C.
to be caused
D.
be have caused
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Air bags for cars were invented _____ lives．Without them more people would be injured in car accidents.
A.
saving
B.
saved
C.
to save
D.
to have saved
【单选题】—What’s the weather like tomorrow，John?—Well，I______it，for the scenic pictures drew my attention as the weather forecast was going on.
A.
was missing
B.
missed
C.
will miss
D.
had missed
【单选题】She was moving out of her old apartment _______ she suddenly realized that the key to the new apartment wasn’t on her.
A.
until
B.
once
C.
when
D.
as if
【单选题】---What’s the matter with your boyfriend?---I can’t stand _____when he often ignores me and talks with other girls.
A.
one
B.
that
C.
him
D.
it
【单选题】I can't catch you. Please explain it in ________ English.[ ]
A.
complex
B.
plain
C.
mysterious
D.
slight
【单选题】Last Monday, I bought a second-hand computer, ______ was very slow.
A.
which price
B.
its price
C.
the price of whose
D.
the price of which
【单选题】Is this watch _____ you wish to have _____?
A.
the one; it repaired
B.
that; repaired it
C.
the one; repaired
D.
which; repaired it
【单选题】Though ______small talk, Roy managed to have lively conversation with strangers.
A.
lacked
B.
lacking of
C.
lacking
D.
lacked in
【单选题】You should________your spare time better if you want to be promoted. [ ]
A.
take
B.
employ
C.
cost
D.
improve
【单选题】If you try to learn too many things at a time at the beginning, you may _______．
A.
have confused
B.
have to be confused
C.
get confused
D.
get confusing