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5.—Can I smoke here?

—No.In no circumstances________in the library.

A.smoking permits

B.smoking is permitted

C.does smoking permit

D.is smoking permitted

欣瑞專家解析：考查倒裝句。in no circumstances 表示否定，意思是“決不，在任何情況下都不”，放在句首時，句子要倒裝，由此排除A、B兩項;根據(jù)句意可知，permit應(yīng)該用于被動語態(tài)，所以D項正確。

【答案】　D

6. Only when class began________that he had left his book at home.

A.will he realize

B.he did realize

C.did he realize

D.should he realize

欣瑞專家解析：考查倒裝句，當(dāng)only+狀語位于句首時，主句要用部分倒裝形式。

【答案】　C

7. Little________about H1N1 so far，so there is no doubt that many people are afraid when talking about the disease.

A.did scientists known

B.scientists have known

C.have scientists known

D.had scientists known

欣瑞專家解析：本題考查時態(tài)和倒裝。根據(jù)關(guān)鍵詞so far，可以確定用現(xiàn)在完成時，故排除A、D兩項;little表示否定，放句首要倒裝。

【答案】　C

8. “By no means，” declared the captain.“________give way to disappointment.”

A.we would

B.we will

C.might we

D.shall we

欣瑞專家解析：考查倒裝句型。by no means位于句首句子要倒裝，根據(jù)句意應(yīng)該用shall we。

【答案】　D

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