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【題目】Food safety is important. Rules ________ to protect people from food pollution.

A. must make B. must be made C. can't make D. can't be made

【答案】B

【解析】試題分析：句意：食品安全很重要。必須制定措施保護人們遠離食品污染。結(jié)合語境可知本句主語是動作對象，故用被動語態(tài)，含有情態(tài)動詞的被動結(jié)構(gòu)是情態(tài)動詞加be 加動詞的過去分詞，根據(jù)句意，選B。

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