Question

There are two thousand students in this college, ______ are from the countryside.

A．one-third of them	B．one-third of which
C．one-third of whom	D．one-third in which

Answer 1

C

解析试题分析：本题定语从句的先行词是two thousand students，因为先行词是人，所以使用whom指代先行词作为介词of的宾语，介词of表示所属关系。句义：在这所大学里有2千名学生，其中的三分之一的学生来自于乡下。故C正确。
考点：考察定语从句