Question

Are you clear _____ what has been taught in this class? That is: Is everything that has been taught in this class clear _____ you?

1. A.
   with; with
2. B.
   about; about
3. C.
   about; with
4. D.
   about; to

Answer 1

D

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。