ChaseDream
搜索
返回列表 发新帖
00:00:00

The tulu, a popular ornamental plant, does not reproduce naturally, and is only bred and sold by specialized horticultural companies. Unfortunately, the tulu is easily devastated by a contagious fungal rot. The government ministry plans to reassure worried gardeners by requiring all tulu plants to be tested for fungal rot before being sold. However, infected plants less than 30 weeks old have generally not built up enough fungal rot in their systems to be detected reliably. And many tulu plants are sold before they are 24 weeks old.

Which of the following, if performed by the ministry, could logically be expected to overcome the problem with their plan to test for the fungal rot?

正确答案: D

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: 2542|回复: 4
打印 上一主题 下一主题

[求助]一道cr看不明白了

[复制链接]
跳转到指定楼层
楼主
发表于 2016-8-2 09:24:34 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
The tulu, a popular ornamental plant, does not reproduce naturally, and is only
bred and sold by specialized horticultural companies. Unfortunately, the tulu is
easily devastated by a contagious fungal rot. The government ministry plans to
reassure worried gardeners by requiring all tulu plants to be tested for fungal rot
before being sold. However, infected plants less than 30 weeks old have generally
not built up enough fungal rot in their systems to be detected reliably. And many
tulu plants are sold before they are 24 weeks old.
Which of the following, if performed by the government ministry, could logically
be expected to overcome the problem with their plan to test for the fungal rot?
(A) Releasing a general announcement that tulu plants less than 30 weeks
old cannot be effectively tested for fungal rot
(B) Requiring all tulu plants less than 30 weeks old to be labeled as such
(C) Researching possible ways to test tulu plants less than 24 weeks old for
fungal rot
(D) Ensuring that tulu plants not be sold before they are 30 weeks old
(E) Quarantining all tulu plants from horticultural companies at which any
case of fungal rot has been detected until those tulu plants can be tested for
fungal rot
拜托请看一下这个到底是什么意思,文中并没有说这个rot是一开始就可以感染这个plant的呀,为什么到plant 30 weeks old就可以测出来了?
收藏收藏 收藏收藏
沙发
发表于 2016-8-2 15:49:22 | 只看该作者
俺赶脚30 week 可以认为是fungal rot潜伏期,tulu有可能被其感染,也有可能是完好的,只有长到30 week大时才能检测出来感染与否。
板凳
 楼主| 发表于 2016-8-2 18:03:56 | 只看该作者
Fiona09 发表于 2016-8-2 15:49
俺赶脚30 week 可以认为是fungal rot潜伏期,tulu有可能被其感染,也有可能是完好的,只有长到30 week大时 ...

好像是这样子的话,如果是这样的话应该就可以解释得过来了,谢谢啦!
地板
发表于 2016-8-6 14:14:00 | 只看该作者
楼主这道题答案最后是选D么
5#
发表于 2016-8-6 17:45:50 | 只看该作者
tulu很容易被fungal rot破坏,因此政府希望在tulu卖出之前就进行fungal rot的检验。但是30周以下的tulu还没有足够能被检验出来的的fungal rot,而很多tulu在24周之前就被卖掉了,问你政府怎么做才能克服tulu检验的这个问题
您需要登录后才可以回帖 登录 | 立即注册

Mark一下! 看一下! 顶楼主! 感谢分享! 快速回复:

手机版|ChaseDream|GMT+8, 2024-12-5 11:25
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