单项选择题

She is so sensitive. We dare not play jokes on her ______ she should become angry.

A．unless
B．lest
C．for fear of
D．so that
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单项选择题
Most American tourists visit China just for ______.
A．evidence
B．sightseeing
C．communication
D．assigning
单项选择题
The instrument as well as other spare parts ______ going to be sent by air soon.
A．is
B．are
C．was
D．were
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