(2013·宁夏银川一中高三第四次考试)________ scores of times, but he still couldn't understand it.
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A
Having explained
B
Having been explained
C
Though it was explained
D
It was explained
推荐题目
________book you choose on the shelf __________ our school library.
#33923
A
Whichever; is belonged to
B
Whichever; belongs to
C
No matter which; belong to
D
Whatever; is belonged to
To enjoy the scenery, Sara would spend long hours on the train ______ travel by air.
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A
as to
B
other than
C
instead of
D
rather than
They are putting too much carbon dioxide into the atmosphere, ______ prevents heat from escaping from the earth into space.
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A
what
B
that
C
which
D
who
----The 2011 College Entrance Examination has just been over!----Yes, it will be about two years _____we attend it.
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A
until
B
before
C
after
D
since
I think you should work harder ________ you are satisfied with the way things are.
#30410
A
if
B
when
C
since
D
unless