___ China’s reform（改革）and opening up in fate 1978, its quick development has aroused worldwide attention.
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A
When
B
As
C
While
D
Since
推荐题目
On a rainy day I was riding my bike to pick up my son ___ a terrible accident happened ahead.
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A
who
B
which
C
while
D
when
But when I got ____ the town ought to have been, all I found was a gasstation.
#31072
A
what
B
which
C
where
D
that
(2013·吉林长春三校高三调研)It is important to introduce children to healthy nutritious foods from ________ they begin to eat solids.
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A
what
B
when
C
that
D
which
________ some teenagers don’t realize is ________ difficult life can be after they get addicted to drugs.
#30969
A
What; how
B
That; how
C
What; what a
D
That; what
It would be unfair to clone any extinct animals they were to live in a zoo.
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A
or
B
if
C
but
D
whether