You can visit Zhalong Nature Reserve one of the few places on Earth red-crowned cranes s

问题补充：

You can visit Zhalong Nature Reserve, one of the few places on Earth red-crowned cranes still live.

A. which

B. that

C. where

D. when

答案：

A. which

B. that

(答案→)C. where

D. when

解析：句意:你可以参观扎龙自然保护区，这是地球上丹顶鹤仍然生存着的少数地方之一。这里where 引导的是一个定语从句，先行词是the few places。which 和that 都是关系代词，引导定语从句时，在从句中做主语或宾语，而这里的定语从句中不缺少主语或宾语，故排除A和B。when 引导定语从句时，先行词应该表示时间。故选C。