The genetic engineering, ______ progress has been very rapid recently, is perhaps the most important of all the sciences．
#69473
A
to which
B
with which
C
in which
D
for
推荐题目
It was 5 o’clock __________ the visitors finally arrived at Pudong International Airport.
#67678
A
when
B
that
C
before
D
since
We will go to the mountains,if it______this Saturday.
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A
doesn’t rain
B
won’t rain
C
isn’t raining
D
didn’t rain
I wonder how many years ago ___________.
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A
did your father retire
B
has your father retired
C
your father retired
D
your father has retired
---- I am not able to solve some practical problems using Newton’s First Law of Motion. ----That’s just _______ most of the students are puzzled easily.
#73676
A
what
B
why
C
how
D
where
He is positive and powerful emotion,_____ for which we all strive.
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A
one
B
the one
C
very one
D
only one