OG 27

[briandragon]

27. Red blood cells in which the malarial-fever parasite resides are eliminated from a person’s body after 120 days. Because the parasite cannot travel to a new generation of red blood cells, any fever that develops in a person more than 120 days after that person has moved to a malaria-free region is not due to the malarial parasite.

Which is the following, if true, most seriously weakens the conclusion above?

A. The fever caused by the malarial parasite may resemble the fever caused by flu viruses.

B. The anopheles mosquito, which is the principal insect carrier of the malarial parasite, has been eradicated in many parts of the world.

C. Many malarial symptoms other than the fever, which can be suppressed with anti-malarial medication, can reappear within 120 days after the medication is discontinued.

D. In some cases, the parasite that causes malarial fever travels to cells of the spleen, which are less frequently eliminated from a person’s body than are red blood cells.

E. In any region infested with malaria-carrying mosquitoes, there are individuals who appear to be immune to malaria.


正確答案為D

可以請高手幫我解答題目及選項的意思嗎??

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[Calvin]

http://www.formosamba.com/phpBB3/viewtopic.php?t=7137

請儘量寫出您的問題所在，我們才有辦法幫助您喔！

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[cecilia1211]

[quote="briandragon"]27. Red blood cells in which the malarial-fever parasite resides are eliminated from a person’s body after 120 days. Because the parasite cannot travel to a new generation of red blood cells, any fever that develops in a person more than 120 days after that person has moved to a malaria-free region is not due to the malarial parasite.

Which is the following, if true, most seriously weakens the conclusion above?

A. The fever caused by the malarial parasite may resemble the fever caused by flu viruses.

B. The anopheles mosquito, which is the principal insect carrier of the malarial parasite, has been eradicated in many parts of the world.

C. Many malarial symptoms other than the fever, which can be suppressed with anti-malarial medication, can reappear within 120 days after the medication is discontinued.

D. In some cases, the parasite that causes malarial fever travels to cells of the spleen, which are less frequently eliminated from a person’s body than are red blood cells.

E. In any region infested with malaria-carrying mosquitoes, there are individuals who appear to be immune to malaria.


正確答案為D


請問一下 為什麼這一題不可以選c啊?

c的意思不是說也有可能潛伏超過120嗎?
還是因為題目結論是說any fever呢?
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[fiona]

就如你所說的
題目結論是ANY FEVER
其他症狀怎麼樣不夠直接反對結論