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—Some say drinking coffee can cause cancer.

—Well, coffee drinking hasn’t been shown to ___________ your risk of cancer.

A. invite B. introduce C. imagine D. increase

D 【解析】句意:——有人说喝咖啡会致癌。——嗯,喝咖啡还没有被证明能增加你患癌症的风险。本题考查动词辨析。A. invite邀请;B. introduce介绍;C. imagine猜想;D. increase增加。根据后面的risk“风险”,可知只有D选项increase与其搭配合适,故答案选D。
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