ChaseDream
搜索
返回列表 发新帖
00:00:00

Certain messenger molecules fight damage to the lungs from noxious air by telling the muscle cells encircling the lungs' airways to contract. This partially seals off the lungs. An asthma attack occurs when the messenger molecules are activated unnecessarily, in response to harmless things like pollen or household dust.

Which of the following, if true, points to the most serious flaw of a plan to develop a medication that would prevent asthma attacks by blocking receipt of any messages sent by the messenger molecules referred to above?

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: 3745|回复: 3
打印 上一主题 下一主题

og 10 cr 59

[复制链接]
跳转到指定楼层
楼主
发表于 2011-4-18 13:05:58 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
59.Certain messenger molecules fight damage to the lungs from noxious air by telling the
muscle cells encircling the lungs’ airways to contract. This partially seals off the lungs. An
asthma attack occurs when the messenger molecules are activated unnecessarily, in
response to harmless things like pollen or household dust.
Which of the following, if true, points to the most serious flaw of a plan to develop a
medication that would prevent asthma attacks by blocking receipt of any messages sent by
the messenger molecules referred to above?
(A) Researchers do not yet know how the body produces the messenger molecules that
trigger asthma attacks.
(B) Researchers do not yet know what makes one person’s messenger molecules more
easily activated than another’s.
(C) Such a medication would not become available for several years, because of long lead
times in both development and manufacture.
(D) Such a medication would be unable to distinguish between messages triggered by pollen
and household dust and messages triggered by noxious air.
(E) Such a medication would be a preventative only and would be unable to alleviate an
asthma attack once it had started.

其实是原文没有看懂,麻烦谁能帮忙解释下,谢谢
收藏收藏 收藏收藏
沙发
 楼主| 发表于 2011-4-18 13:23:43 | 只看该作者
寻求好心人帮助
板凳
发表于 2011-4-18 13:25:33 | 只看该作者
DDDDDDDDDDDdddd

A molecule M shuts down the lung partially as a response to noxious air. Asthma attack is caused by unnecessarily activated molecule M. A medication is designed to block the action of molecule M in order to fight asthma.  You need to find a weakener.
地板
 楼主| 发表于 2011-4-18 13:56:40 | 只看该作者
谢谢
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, 2024-11-9 03:13
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