请教大全-7-10,大全-7-11

joywzy

10,10. Neither a rising standard of living nor balanced trade, by itself, establishes a country’s ability to compete in the international marketplace. Both are required simultaneously since standards of living can rise because of growing trade deficits and trade can be balanced by means of a decline in a country’s standard of living.

If the facts stated in the passage above are true, a proper test of a country’s ability to be competitive is its ability to

(A) balance its trade while its standard of living rises
(B) balance its trade while its standard of living falls
(C) increase trade deficits while its standard of living rises
(D) decrease trade deficits while its standard of living falls
(E) keep its standard of living constant while trade deficits rise.

答案:A, 请问这个归纳题的思路如何,是怎么得出的?

11.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.

答案, 请问D是怎么削弱的?

谢谢.

hexin

10, 因 为 'Neither a rising standard of living nor balanced trade'不 能 ‘establishes a country’s ability to compete in the international marketplace’， 而 ‘Both are required‘ ， 因 此 只 要 在 答 案 中 找 符 合 Both的 即 可 。

11， 如 (D)所 说 ， 本 来 muscle cells encircling the lungs’ airways to contract. This partially seals off the lungs是 一 种 对 noxious air 的 保 护 性 措 施 ， 缺 点 是 有 可 能 由 於 messenger molecules are activated unnecessarily发 生 不 必 要 的 防 御 措 施， 导 致 asthma attack occurs。 而 该 medication无 法 分 辨 pollen and household dust和 noxious air的 话 ， 将 抑 制 所 有 的 保 护 性 措 施 ， 那 么 如 果 真 遇 到 noxious air ， 此 人 岂 不 是 要 死 翘 翘 了 。 所 以 这 种 不 管 青 红 皂 白 就 抑 制 此 保 护 性 措 施 的 药 是 不 可 取 的 。

joywzy

thank u, hexin! i got it.