(2013·新课标Ⅰ，32)There's no way of knowing why one man makes an important discovery________another man，also intelligent，fails.
#11496
A
since
B
if
C
as
D
while
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#13778
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become of
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taken place
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#12356
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fasten
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press
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suffer
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Whatever
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satisfy
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compromise
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quarrel
D
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#10938
A
raise
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bring up
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make
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support