英语 高中 单选

来源：百度知道 编辑：UC知道 时间：2024/06/23 01:47:07
2.Mary and Sue are twins and we often can't tell____
A. which is which
B. who is which
C. which is who
D. whom is who

解释下为什么选A
which 在这里为什么可以指代人.?

再举一例：
--I like that girl.
--which one?

哪一个是哪一个

哪个是哪个，两者都有明确的范围。
在前面句子中有明确指示出范围的条件下，一般用which，指代人也是可以的