The situation on the reservation is aggravated by the big generation gap in many Indians'families.
A.pervaded
B.frustrated
C.worsened
D.crumbled

A.A.pervaded
B.frustrated
C.worsened
D.crumbled

【参考答案】

C
解析：这句话的意思是：在印第安居留地之内的状况由于印第安家族间的严重的代沟被——。在给出的选项中，perva......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)