In Australia there are over 140 species of snakes,many of __are extremely dangerous.In Australia there are over 140 species of snakes,many of are extremely dangerous.A.them B.that C.which D.those为什么选C？

In Australia there are over 140 species of snakes,many of __are extremely dangerous.
In Australia there are over 140 species of snakes,many of are extremely dangerous.
A.them B.that C.which D.those
为什么选C？

非限制性定语从句,引导词在从句中作介词宾语,指代的是非人的 snake.必须用关系代词 which.

定语从句，后半句没有连词，所以是修饰前面某个名次的。

C
有不明白的地方再问哟，祝你学习进步，更上一层楼！ (*^__^*)