单项选择题

The point（）water boils is called boiling point.

A．when
B．that
C．at which
D．for

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单项选择题

It is reported that an airplane（）the lake not far from Wuhan.

A．crashed into
B．pulled in
C．pushed in
D．struck out

单项选择题

（）the failure, he was determined to continue studying on the topic.

A．Because of
B．Despite
C．Though
D．Instead of

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