问题
选择题
So far all cloned animals have suffered from some different serious disorders，________ dying soon after birth.
A．many of which
B．many of whom
C．many of them
D．many of that
答案
答案：C
解析 由后面的dying可知这里不是完整的句子(没有谓语动词)，故不能选A或B构成定语从句，此处考查独立主格结构。