(2013·高考新课标全国卷Ⅰ)There’s no way of knowing why one man makes an important discovery________another man，also intelligent，fails.
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A
since
B
if
C
as
D
while
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The young man always talks a lot ___________ he knew everything, which, of course, makes others unhappy.
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A
once
B
even though
C
though
D
as though
A reading room is _______ you can read newspapers and magazines as well as books.
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A
in which
B
that
C
where
D
place
— What do you think about that firm’s job offer ? —I have been considering it, it’s hard for me to make a decision right now.
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A
and
B
but
C
so
D
otherwise
The question _______ we can get enough coal for the winter has not been cleared up yet .
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A
that
B
if
C
which
D
whether