问题
选择题
I have bought 2 ballpens, _______ writes well.
A．both of which
B．none of which
C．neither of which
D．neither of them
答案
答案：C
不定代词辨析。Both两个都；none多个中都不；neither两个都不；句意：我买了两支圆珠笔，其中哪一个书写都不好。在非限定性定语从句中指代物时只能用which做引导词，故选C。