单选题 36. The place ______ the bridge is supposed to be built should be ______ the cross-river traffic is the heaviest.

A、 which; where
B、 at which; which
C、 at which; where
D、 which; in which

【正确答案】 C

【答案解析】[考点] 定语从句和表语从句
分析句子结构可知，place和should之间是定语从句。先行词为The place，从句中缺少地点状语，故空处应为关系副词where或“介词+which”引导。be后为表语从句，从句中缺少状语，所以应用连接副词where引导。故选C。
建桥梁的地方应设在跨河交通最繁忙的地方。