AIDS is said______the number-one killer of both men and women over the past few years in that region.

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问题 AIDS is said______the number-one killer of both men and women over the past few years in that region.

选项 A、being
B、to be
C、to have been
D、having been

答案C

解析 考查常用句型与时态。由句中的时间状语“over the past few years”可知动作发生在谓语动作之前,故应用完成时。sb./sth.is said to do…是常用句型,意为“据说……”。故选C。
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