单项选择题

It is well known that knowledge is the______ condition for expansion of mind.

A．incompatible
B．incredible
C．indefinite
D．indispensable
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单项选择题
The young girl______ in swimming in the storm and she did cross the Channel.
A．insisted
B．stuck
C．persisted
D．maintained
单项选择题
He tricked her______ marrying him by pretending that he was rich.
A．into
B．in
C．to
D．onto
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