2. 外语
  3. Lung cancer is said_____the number-one killer of both men and women over the past decade in that region.

Lung cancer is said_____the number-one killer of both men and women over the past decade in that region.

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问题 Lung cancer is said_____the number-one killer of both men and women over the past decade in that region.
选项 A、being
B、to be
C、to have been
D、having been
答案C
解析 考查固定搭配及时态用法。be said to表示“据说，听说”，后跟不定式现在时态指现在或将要发生的事，而后跟不定式完成时态指已经发生的事，本句中的时间状语是over the past few years，说明这是已经发生的事，故C正确。
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