PP T2-48

[edas9101]

48.

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.


可以解釋一下題目意思嗎??
我不懂為什麼答案會是D
感謝

[Huang Hsin-Yi]

題目:肺裡面有傳信兵,當有毒物空氣進入肺,傳信兵就告訴肌肉來保護肺
但氣喘就是這個傳信兵過於活躍,因此就算沒毒物質也會讓肺肌肉過度反應

這樣你再想想答案巴~~~~

[Philosophia]

you can also see the Official Guide for GMAT Verbal Review Critical Reasoning Q37 and explanations P180.