Question

In our class there are 46 students, _____ half wear glasses.

A．in whom

B．in them

C．of whom

D．of them

Answer 1

C 

本题考查定语从句。前后两句话之间无连词，故不能用人称代词them
而应用关系代词whom引导定语从句；在46个学生当中，表所属，应用of。故答案选C。