问题
选择题
The place _____ the bridge is supposed to be built should be _____ the cross-river traffic is heaviest.
A．which; where
B．at which; which
C．at which; where
D．which; in which
答案
答案：C
题目分析：考查定语从句和表语从句：句意：桥梁应该建在水上交通最拥堵的地方。根据句子的意思可知，第一个从句应该是定语从句，先行词为the place，在从句中作地点状语，故排除A、D；第二个从句应该是表语从句，从句中缺地点状语，用where，in which引导的是定语从句，故排除B。选C。