本贴相关题目 OG-2017-CR-609OG-2017-CR-609
OG-2016-CR-71
OG-2015-CR-74
OG-13-CR-74
... (LOCF)

00:00:00

Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that ______.

Aproduce their crop over an extended period of time, as summer squash does
Bproduce large seeds that are easy to treat individually, as corn and beans do
Cprovide, as they approach maturity, shade dense enough to keep weeds from growing
Dare typically grown in large tracts devoted to a single crop
Eare cultivated specifically for the seed they produce rather than for their leaves or roots

正确答案: C

求问大牛 OG13 CR74 我逻辑链很不清晰啊！！

[复制链接]

tiancaijudy

电梯直达

楼主

发表于 2013-1-23 00:22:58 | 显示全部楼层回帖奖励

|倒序浏览 |阅读模式

求问大牛 OG13 CR74 我逻辑链很不清晰啊！！

收藏0 收藏0

回复

感谢分享！

顶楼主！

看一下！

Mark一下！

tiancaijudy

沙发

楼主| 发表于 2013-1-23 00:46:30 | 显示全部楼层

求解释～～～～

回复

同意！

看一下！

Mark一下！

tiancaijudy tiancaijudy 当前离线 UID 773221 在线时间小时注册时间 2012-6-24 最后登录 1970-1-1 主题帖子性别保密	板凳楼主\| 发表于 2013-2-8 01:20:02 \| 显示全部楼层提示: 该帖被管理员或版主屏蔽

	回复同意！看一下！ Mark一下！举报