Medical research has shown that the widespread use of cigarettes contributes ___ the increaseof cancers.
(A) to
(B) for
(C) with
(D) towards
出自：新疆工程学院大学英语3
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Medical research has shown that the widespread use of cigarettes contributes ___ the increaseof cancers.
(A) to
(B) for
(C) with
(D) towards
出自：新疆工程学院大学英语3