feifei 18 求解~~~呜呜呜

sweety9 · 发表于 2010-6-26 13:18:58

18. 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.

疑问1： LEAST strengthen 是支持还是驳斥？
疑问2：解题思路
谢谢！

farinetti · 发表于 2010-6-26 15:08:02

1.应该是最不支持文中的论点
2.答案是什么？我感觉是E

sweety9 · 发表于 2010-6-26 15:26:12

答案是E，可以说下解题思路么？

farinetti · 发表于 2010-6-26 16:41:27

这段文章的大致意思就是：乘客携带的电子设备的启用会影响到飞机的电路系统。
E的意思是：飞机装配上低动力电路的同时，便携式的电子设备也开始风行。这个跟文章的观点没有任何关联。其他的几项都能够很好的佐证论点。

feifei 18 求解~~~呜呜呜

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