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问题 单项选择题

桥梁、涵洞应考虑（）和灌溉等综合利用。

A、排洪

B、排水

C、排污

答案

参考答案：A

选择题

— ____ I know your name ?

— Sorry , you ____ .

A．May ; mayn''t

B．May ; can''t

C．Must ; mustn''t

D．Need ; must
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单项选择题

The discovery of the connection between aspirin and Reyessyndrome, a rare and deadly ailment, is a recent example of the caution with which drugs must be used, even for medical purposes.

A．disease

B．sick

C．ill

D．illness
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