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【单选题】
Allow children the space to voice their opinions, _____ they are different from your own.
[ ]
A.
until
B.
unless
C.
even if
D.
as though
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参考解析：
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举一反三
【单选题】-Sorry，I’m late.-It’s OK.However，you________come to the company today，for it is Saturday.[ ]
A.
couldn’t have
B.
needn’t have
C.
wouldn’t
D.
couldn’t
【单选题】Many of the world's plants and animals have already___ , and several other species are endangered. [ ]
A.
died away
B.
died out
C.
died down
D.
died off
【单选题】Tom does speak Chinese well, but his reading and writing skills leave much ______.[ ]
A.
to improve
B.
to be improved
C.
being improved
D.
having improved
【单选题】—Have you got any money________you?I want to buy that book.—I'm afraid not.[ ]
A.
by
B.
about
C.
for
D.
on
【单选题】Joe, along with her three sisters, _______great interest in writing these days.
A.
was showing
B.
were showing
C.
is showing
D.
are showing
【单选题】Cable TV began in 1948 in the USA, but it took 50 years ________ 66 percent of American households had it.
A.
before
B.
when
C.
after
D.
until
【单选题】．---I wonder if I can get a rise in salary． ---You have been paid enough．__________ do you want?
A.
How much
B.
What more
C.
What else
D.
How much more
【单选题】He studied very hard all the time because he didn’t want to __________in his studies.
A.
fall behind
B.
be left behind
C.
left behind
D.
Both A and B
【单选题】Do let your mother know all the truth．She appearseverything.
A.
to tell
B.
to be told
C.
to be telling
D.
to have been told