题目内容

Lab workers must wear protective ______.
A．clothB．dressC．clothingD．costume
C
此题考查词义辨析。cloth指做衣服用的布料，不可数；dress尤指女子的连衣裙及某种特殊场合下穿着的服装；clothing是衣服、服装的总称，集体名词，不可数。作主语时，谓语用单数形式；costume指服装、服装式样(尤指用于某时期、某团体或某活动的服饰)。
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