单项选择题

______ is well known, the key to success lies in hard work.

A．As
B．That
C．Which
D．What
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单项选择题
We must leave the party at exactly 9:00 ______ we'll be late for work.
A．for else
B．other
C．else
D．otherwise
单项选择题
______ all behavior is learned is a basic assumption of social scientists.
A．Nearly
B．That nearly
C．It is nearly
D．When nearly
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