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【单选题】
is known to us is that tobacco contains nicotine and other harmful products，so you should give up smoking．
A.
As
B.
It
C.
What
D.
Which
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】As we know, adults are not ______ ; they do not move comfortably to another place.
A.
flexible
B.
reliable
C.
intelligent
D.
convenient
【单选题】（2014重庆一中高三下第三次月考）14．An EU official stressed thateffective measures could be taken, the future for Europe was indeed dark.
A.
until
B.
unless
C.
since
D.
while
【单选题】She was ____ to study medicine to help the poor when she was a middle-school student. [ ]
A.
devoted
B.
sentenced
C.
determined
D.
concerned
【单选题】I wondered what great difficulty he had ________ the plan.
A.
to carry out
B.
carrying out
C.
carried out
D.
with carrying out
【单选题】He was___the important of learning English and began to practise it every day.
A.
aware
B.
aware of
C.
aware for
D.
aware to
【单选题】—Hello, John, how are you? Are you busy now?—Not really. I ________ my report. And now I am watching an American movie on TV.[ ]
A.
finished
B.
have finished
C.
had finished
D.
have been finishing
【单选题】He pretended _____ an important paper when the boss entered.
A.
to read
B.
to be reading
C.
to have read
D.
to have been reading
【单选题】_____ he opened the window, a sparrow flew in. [ ]
A.
Though
B.
The moment
C.
If
D.
Unless
【单选题】You look so curious (好奇) about Beijing .Is this the first time that you _____ here ?
A.
came
B.
have come
C.
had come
D.
are coming
【单选题】When he came to, he found himself ____a chair, with his hands_____back..
A.
to sit; tied
B.
sitting; tying
C.
sat; tied
D.
sitting; tied