单项选择题

It is only in the last decade that people have become aware of the threat to the quality of the environment by unrestricted industrial production.

A．posed
B．propelled
C．prompted
D．provoked
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单项选择题
The ancient temple and pagoda are still there, but not in its _________.
A．humidity
B．solidarity
C．liability
D．integrity
单项选择题
John is planning another travel abroad, yet his passport will at the end of this month.
A．terminate
B．cease
C．exceed
D．expire
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