问题
选择题
There were two boys in the lab, ______did the experiment successfully.
A．the clever of whom
B．the cleverer or whom
C．the clever of them
D．the more clever of them
答案
答案：B
选B。“the + 形容词比较级+of+名词复数”表示“两者中较…的一个”；此处关系代词whom指代the two boys.
单端固定桥戴用3年，自觉
基牙松动1个月，咬合痛。查：
，观察
关系