The________of AIDS has led to an expansion in research seeking a cure.

A． proliferation

B． selection

C． innovation

D． conviction

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参考答案

【答案】A。解析：考查名词辨析。旬意为“艾滋病的______使得人们做更多的研究工作去寻找治疗的方法”。proliferation意为“激增；扩散”，selection意为“选择；选拔”，innovation意为“革新，创新”，conviction意为“定罪，判罪”。A项最符合题意。

1 When the idea of winning in sports is carried to excess,competition can turn ________ into disorder and violence.

A． honestly

B． honest

C． honorable

D． honorary

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2 America will never again have as a nation the spirit of adventure as itbefore the West was settled.

A． could

B． did

C． would

D． was

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3 There is a real possibility that these animals could be frightened,a sudden loud noise.

A． being there

B． should there be

C． there was

D． there have been

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