ChaseDream
搜索
返回列表 发新帖
00:00:00

Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.

正确答案: B

更多相关帖子

524

帖子

15

好友

4712

积分

ChaseDream

注册时间
2003-03-17
精华
8
解析
查看: 1729|回复: 0
打印 上一主题 下一主题

请教prep07 -97题

[复制链接]
跳转到指定楼层
楼主
发表于 2012-5-7 22:18:49 | 只看该作者 回帖奖励 |正序浏览 |阅读模式


97.    (29753-!-item-!-188;#058&003991)


Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.


(A) while at the same time they have introduced some 100,000 dangerous chemical pollutants, having
(B) while at the same time introducing some 100,000 dangerous chemical pollutants that have
(C) while they have introduced some 100,000 dangerous chemical pollutants at the same time, which have
(D) but introducing some 100,000 dangerous chemical pollutants at the same time that have
(E) but at the same time introducing some 100,000 dangerous chemical pollutants, having
我觉得B选项也不好啊,WHILE和AT THE SAME TIME有重复的含义
求教CDer!!
收藏收藏 收藏收藏
您需要登录后才可以回帖 登录 | 立即注册

IESE MBA
近期活动

正在浏览此版块的会员 ()

手机版|ChaseDream|GMT+8, 2024-12-28 05:42
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号

ChaseDream 论坛

© 2003-2023 ChaseDream.com. All Rights Reserved.

返回顶部