问题描述:

单选题

Mr.Barret doesn’t think that all bad language should be allowed.In his opinion, there are _____ that should be kept up.A.degreesB.levelsC.limitsD.standards

网友答案:
D解析本题考查名词辨析。从上下文的意思分析,此处用 standards,表示“应该遵循的标准” 。句意:以他看来,这是他应该遵循的标准。
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