单项选择题

It does harm to your eyesight to read books in the ____________ light of a candle.

A．colorless
B．dim
C．pale
D．transparent

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单项选择题

I assume the construction of the new airport ____________ at the end of last year.

A．must complete
B．must be completed
C．must have been completed
D．must have completed

单项选择题

All the following problems are implied as possible causes of campus suicide incidents EXCEPT ________.

A．poor academic results
B．failing to get proper sleep
C．lack of family concern
D．family history of mental illness

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