问一道费费逻辑题~~

Sherry5 · 发表于 2010-7-28 17:46:41

呃，弱问一下十八题~~Modern navigation systems, which are found in most of today’s commercial aircraft, are made with low-power circuitry, which is more susceptible to interference than the vacuum-tube circuitry found in older planes. During landing, navigation systems receive radio signals from the airport to guide the plane to the runway. Recently, one plane with low-power circuitry veered off course during landing, its dials dimming, when a passenger turned on a laptop computer. Clearly, modern aircraft navigation systems are being put at risk by the electronic devices that passengers carry on board, such as cassette players and laptop computers.

Which one of the following, if true, LEAST strengthens the argument above?

(A) After the laptop computer was turned off, the plane regained course and its navigation instruments and dials returned to normal.

(B) When in use all electronic devices emit electromagnetic radiation, which is known to interfere with circuitry.

(C) No problems with navigational equipment or instrument dials have been reported on flights with no passenger-owned electronic devices on board.

(D) Significant electromagnetic radiation from portable electronic devices can travel up to eight meters, and some passenger seats on modern aircraft are located within four meters of the navigation systems.

(E) Planes were first equipped with low-power circuitry at about the same time portable electronic devices became popular.

不懂呃，就这个least strengthen是不是前提还得是加强，然后再从加强里面选啊？但是这样来看的话还是不知道为什么答案是E呃。。。我错选了D。。。基本上是乱选的。。。

Sherry5 · 发表于 2010-7-29 09:08:34

顶。。。没有人能帮帮我吗？

volcanobird · 发表于 2010-7-29 09:18:00

D 是说携带电子产品的乘客坐在8米之内对飞机有危险，还是加强了说low-power circuitry是不好的。. E 说两者同时出现，似乎和主题没有关联。

gilgemash · 发表于 2010-7-29 11:54:36

(D) is more directly revelent to the argument than is (E).

问一道费费逻辑题~~

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