问题补充：
The clean-up operation at the bullet train crash site in east China’s Zhejiang province has been completed. Meantime, trains have resumed services on the railway the accident occurred.
A. which
B. that
C. where
D. the place where
答案：
A. which
B. that
(答案→)C. where
D. the place where
解析：考查定语从句。句中先行词为the railway，在从句中作地点状语，故用关系副词where，即为这起事故发生在铁路上。选C。
