--Can you tell me           to live a low-carbon(低碳) life?  -- OK. Use both sides of the paper. Don’t use plastic bags or disposable goods(一次性用品).
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A
how
B
why
C
when
D
where
推荐题目
 There were two boys in the lab,       did the experiment successfully.
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A
the clever of whom
B
the cleverer or whom
C
the clever of them
D
the more clever of them
 He made another wonderful discovery, ____ of great importance to science.
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A
which I think is
B
which I think it is
C
which I think it
D
I think which is
There are 104 elements found in nature, ___ are metals.
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A
most of it
B
that
C
most of which
D
mostly