The new technological revolution in American newspapers has brought increased _______, a wider range of publications and an expansion of newspaper jobs.

A) circulation

B) reproduction

C) manipulation

D) penetration

注：1. circulation 循环;发行量

2. reproduction 复制;生殖

3. manipulation 操纵，控制(永陪词汇)

4. penetration 渗透，弥漫

permeate 渗透，弥漫

permanent 永恒的，永久的

potential 潜力

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 阻碍

2. restrain = refrain 限制，抑制