2. 外语
  3. Medical research has shown that the widespread of use of cigarettes contributes ______the increase of cancers.

Medical research has shown that the widespread of use of cigarettes contributes ______the increase of cancers.

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问题 Medical research has shown that the widespread of use of cigarettes contributes ______the increase of cancers.
选项 A、towards
B、for
C、with
D、to
答案D
解析
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