og 10 cr 59

naoyixue

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

naoyixue

谢谢

sdcar2010

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.

naoyixue

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