本贴相关题目 TN-13-CR-28 (ARSW)

00:00:00

Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally deer ticks pick up the bacterium while in the larval stage from feeding on infected white-footed mice. However, certain other species on which the larvae feed do not harbor the bacterium. Therefore, if the population of these other species were increased, the number of ticks acquiring the bacterium and hence the number of people contracting Lyme disease-would likely decline.

Which of the following, if true, most strengthens the argument?

ATicks do not suffer any adverse consequences from carrying the bacterium that causes Lyme disease in humans.
BThere are no known cases of a human's contracting Lyme disease through contact with white-footed mice.
CA deer tick feeds only once while in the larval stage.
DA single host animal can be the source of bacteria for many tick larvae.
ENone of the other species on which deer tick larvae feed harbor other bacteria that ticks transmit to humans.

正确答案: C

一道争议题，不问答案只问意思...

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jimmyhou520

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发表于 2011-8-12 22:05:30 | 只看该作者回帖奖励

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Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally deer ticks pick up the bacterium while in the larval stage from feeding on infected white-footed mice. However, certain other species on which the larvae feed do not harbor the bacterium. Therefore, if the population of these other species were increased, the number of ticks acquiring the bacterium and hence the number of people contracting Lyme disease would likely decline.

Which of the following, if true, most strengthens the argument?

A.Ticks do not suffer any adverse consequences from carrying the bacterium that causes Lyme disease in humans.

B.There are no known cases of a human’s contracting Lyme disease through contact with white-footed mice.

C.A deer tick feeds only once while in the larval stage.

D.A single host animal can be the source of bacterium for many tick larvae.

E.None of the other species on which deer tick larvae feed harbor other bacteria that ticks transmit to humans

很多大N都说答案是C，理由是other species的增加会使得deer ticks吃的时候吃到 infected white-footed mice 的概率降低，但是，题目里没有说过deer ticks会吃other species啊，certain other species on which the larvae feed do not harbor the bacterium 这句话的意思难道不是other species吃larvae吗？？

求解~