Question

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 that

D．many of them

Answer 1

D

考查独立主格结构。 根据句中的dying看此处不能是从句所以排除A、B、C三个选项。 到目前为止所有的克隆动物都有不同类型的严重紊乱，好多一降生就死去了。