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The wreckage of something like a jet plain discovered in the heart of the desert is believed ______ a UFO and _______down for reasons still mysterious.

A.to be; have fallen

B.to have been; to have fallen

C.to be; to fall

D.having been; having fallen

 

【答案】

A

【解析】

试题解析:believe +n.+to be相信/认为...是...;第二空是and连接的两个并列谓语结构,即is believe 与have fallen 是并列谓语,句意是那些像飞机碎片的东西被认为是UFO,它落下的原因仍是个迷。故选A。

考点:考查固定搭配和句子分析。

点评:固定搭配需要考生平时记忆,句子分析需要考生具有很强的分析能力,要求考生平时多思考,多锻炼。

 

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