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

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 从时间状语“over the past few years”可知此处要用现在完成时，即be saidto have been。
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