单选题
There are ten stories in this book, ______ are the most interesting ones.
A、
the first four of them
B、
the first four of those
C、
the first four
D、
the first four of which
【正确答案】
D
【答案解析】
[解析] 分析句子结构可知，本句是非限制性定语从句，选项A、B、C均不能用于引导非限制性定语从句。the first four of which相当于the first four of the ten stories。故选D。
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