Nobody knows the man killed in the accident so it is difficult for the police to find out

问题补充：

Nobody knows the man killed in the accident, so it is difficult for the police to find out his .

A. identity

B. height

C. weight

D. thought

答案：

(答案→)A. identity

B. height

C. weight

D. thought

解析：名词辨析。A身份；B高度；C重量；D想法；句意：没有人认识在事故中死去的男孩，所以对警察来说查明他的身份很困难。根据句意说明A正确。