OG12-104一个关于介词+which的基础语法问题。

wyfwyf007

我kaplan上面看到说in which可以和where互换，但是前者比较正式。。。。

ARG

举一反三 冰雪聪明

wxhkaka

啊啊~终于搜到一个帖子！我也想问~~
老prep SC上第8题 看解析没看懂：
The Achaemenid empire of Persia reached the Indus Valley in the fifth century B.C., bringing
the Aramaic script with it, from which was derived both northern and southern Indian alphabets.
(A) the Aramaic script with it, from which was derived both northern and
(B) the Aramaic script with it, and from which deriving both the northern and the
(C) with it the Aramaic script, from which derive both the northern and the
(D) with it the Aramaic script, from which derives both northern and
(E) with it the Aramaic script, and deriving from it both the northern and

选C 解析说应该是 both the northern and the southern India alphabets derive from the Aramaic script
到底怎么还原的呀

wxhkaka

还有which指代谁呀？