题目内容
13．We don't know he is．He is a doctor．（ ）| A． | what | B． | which | C． | who | D． | whom |
分析 我们不知道他是做什么的．
他是一个医生．
解答 答案：A 根据"He is a doctor"可知我们不知道的是他的职业，询问某人的职业要用what is sb？故选A．
点评 本题考查宾语从句的关系代词．要根据答句来判断宾语从句的含义，进而选出正确的答案．
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