单选题Are you clear _____

单选题 Are you clear _____ what has been taught in this class? That is: Is everything that has been taught in this class clear _____ you?A.with; withB.about; aboutC.about; withD.about; to

D解析试题解析：考查be clear about和clear to的用法，be clear about意思“对……明白”， clear to意思“明白的”，句子意思“你明白在课堂上所教的内容吗？也就是说，课堂上交的每个东西你都明白吗？”，所以选D考点：考查be clear about和clear to的用法点评：注意句子Are you clear about what has been taught in this class?是个宾语从句，从句what has been taught in this class?做介词about的宾语，关系代词what引导；句子That is: Is everything that has been taught in this class clear to you?从句that has been taught in this class对先行词everything解释说明的，并且不做成份，所以是同位语从句。

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