Question

【题目】Proper exercise is good for your health, but too much exercise may _______ you.

A.be harm toB.does harm toC.be harmful forD.do harm to

Answer 1

【答案】D

【解析】

句意：正确的锻炼对你的健康有益，但太多的锻炼可能对你有害。

考查短语辨析。do harm to…= be harmful to …意为“对……有害”；由此推断A、C是错误表达，排除；空格在情态动词may的后面，判断填动词原形，故选D。