——What impresses you most about your hometown?——The street the length of which is four ti

问题补充：

——What impresses you most about your hometown?

——The street, the length of which is four times it was eight years ago.

A. that

B. as

C. than

D. what

答案：

A. that

B. as

C. than

(答案→)D. what

解析：句意：--你的家乡给你印象最深刻的是什么？--街道，它的长度是8年前的4倍。这里使用了倍数的句型：倍数+what引导的名词性从句，一般句式就是：The length of the street is four times the length of my hometown eight years ago.选D。