A) circulation
B) reproduction
C) manipulation
D) penetration
注:1. circulation 循環(huán);發(fā)行量
2. reproduction 復(fù)制;生殖
3. manipulation 操縱,控制(永陪詞匯)
4. penetration 滲透,彌漫
permeate 滲透,彌漫
permanent 永恒的,永久的
potential 潛力
[P8-41]
His career was not noticeably ______by the fact that he had never been to college.
A) prevented
B) restrained
C) hindered
D) refrained
注:1. hinder 阻礙
2. restrain = refrain 限制,抑制