问题
选择题
Zhouqu, Gansu was attacked by such a terrible mud-rock flow few residents had ever experienced before.
A．as
B．which
C．where
D．that
答案
答案：A
考查定语从句，先行词为a terrible mud-rock flow，从句中few residents had ever experienced后缺少宾语，因为先行词前有such，所以后应用关系代词as,选A。