单项选择题

() he referred to in his speech, the pollution in Beijing is indeed not serious.

A.What
B.As
C.Which
D.Since

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单项选择题

--What about having a rest -- ().

A.Good idea
B.Help yourself
C.Go ahead, please
D.Me, too

单项选择题

When she heard the news, her hope () disappointment.

A.got
B.turned in
C.turned to
D.felt

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