British scientists have produced _____ they believe is the world’s smallest Christmas card．
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A
which
B
who
C
that
D
what
推荐题目
______ home yesterday afternoon, it began to rain heavily.
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A
On my arrival
B
On arriving
C
While I got
D
When I got
— Hasn’t the thief admitted his crime by now?— No, ______ questioned many times.
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A
if
B
though
C
unless
D
once
I had neither a computer nor newspaper. ___ I don’t know the latest news.
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A
It’s the reason
B
It’s the reason
C
There’s why
D
That’s why
（2014年北京市西城区高三5月二模试题）35. Paris has some great museums ______ visitors can see fine works of impressionist painters.
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A
where
B
which
C
that
D
when
We haven't settled the question of ______ it is necessary for him to study abroad.
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A
if
B
where
C
whether
D
that