题文
阅读理解。 The biggest safety threat facing airlines today may not be a terrorist with a gun, but the manwith the portable computer in business class. In the last 15 years, pilots have reported well over
100 incidents that could have been caused by electromagnetic interference. The source of this
interference remains un/confirm/ied, but increasingly, experts are pointing the blame at portable
electronic devices such as portable computers, radio and cassette players and mobile telephones.
RTCA, an organization which advises the av
iation(航空) industry, has recommended that all
airlines ban such devices from being used during "critical" stages of flight, particularly take-off
and landing. Some experts have gone further, calling for a total ban during all flights. Currently,
rules on using these devices are left up to individual airlines. And although some airlines prohibit
passengers from using such equipment during take-off and landing, most are reluctant to enforce
a total ban, given that many passengers want to work during flights.
The difficulty is predicting how electromagnetic fields might affect an aircraft's computers.
Experts know that portable devices emit radiation which affects those wavelengths which
aircraft use for navigation and communication. But, because they have not been able to reproduce
these effects in a laboratory, they have no way of knowing whether the interference might be
dangerous or not.
The fact that aircraft may be vulnerable (易受损的) to interference raises the risk that
terrorists may use radio system in order to damage navigation equipment. As worrying, though,
is the passenger who can't hear the instructions to turn off his radio because the music's too loud.
1. The passage is mainly about ________.A. a new regulation for all airlines.
B. the defects of electronic crashes
C. a possible cause of aircraft crashes
D. effective safety measures for air flight2. What is said about the over 100 aircraft incidents in the past 15 years?______A. They may have been caused by the damage to the radio systems.
B. They may have taken place during take off and landing.
C. They were proved to have been caused by the passengers' portable computers.
D. They were suspected to have resulted from electromagnetic interference.3. Few airlines want to impose a tota
l ban on their passengers using electronic devices because _______.A. they don't believe there is such a danger as radio interference.
B. the harmful effect of
electromagnetic interference is yet to be proved.
C. most passengers refuse to take a plane which bans the use of radio and cassette players.
D. they have other effective safety measures to fall back on. 4. Why is it difficult to predict the possible effects of electromagnetic fields on an airplane's
computers?______A. Because it is extremely dangerous to conduct such research on an airplane.
B. Because it remains a mystery what wavelengths are liable to be interfered with.
C. Because research scientists have not been to produce the same effects in labs.
D. Because experts lack adequate equipment to do such research.
5. It can inferred from the passage that the author _________.A. is in favor of prohibiting passengers' use of electronic devices completely
B. has overestimated the danger of electromagnetic interference
C. hasn't formed his own opinion on this
problem
D. regards it as unreasonable to exercise a total ban during flight 题型：未知 难度：其他题型
答案
1-5CDBCA解析
该题暂无解析
考点
据考高分专家说，试题“阅读理解。 The .....”主要考查你对 [社会现象类阅读 ]考点的理解。社会现象类阅读
社会现象类阅读概念：
这类文章通过写人记事来揭示文章的主题，显示其社会意义，一般采用顺序或倒叙来叙述。题目经常是一些细节问题。考查的方面可以是原因和其中引发的思考。
社会现象类阅读解题技巧：
这类文章通过写人记事来揭示文章的主题，显示其社会意义，一般采用顺序或倒叙来叙述。题目经常是一些细节问题。考查的方面可以是原因和其中引发的思考。阅读这类文章要理清思路。
1、浏览试题，明确要求。
在阅读文章前，最好先浏览一下文章后面的题干和选项。知道了问题后再去看文章，可使思路更敏捷，而且也便于阅读时留意文中出现的与选项有关的信息。
2、通读全文，抓住主要内容。
在不影响理解的前提下，尽可能地阅读以便在尽可能短的时间内理解文章或段落的内容。阅读时，如遇到不熟悉的单词、词组或一时看不懂的句子，不要停下来苦思冥想，继续读下去，通过上下文的词语和句子可能就理解了。
3、抓住中心思想和段落大意。
通读全文时，要特别注意主题句。每篇文章或每个段落都有与文章有关的句子，尤其是科技、政论性文章的主题句一般都在文章的开头或结尾，插在中间的很少。所以，文章的第一段或开头的第一、二个句子往往包含着文章的中心思想、作者的意图或全文的概述，因此要特别注意，彻底理解。
4、有针对性地仔细阅读，找寻所需信息。
在前面的基础上，可进行有针对性地阅读了。把与问题无关的内容一扫而过，而对于和问题有关的内容认真阅读，还可以用笔在下面做出记号。再把这些信息与问题的要求结合起来，逐条分析，综合判断，找出正确答案。
5、进行合理的推理判断。
对文章有了全面的了解之后，可以按照文章要求以及上下文之间的关系，做出推理判断。在进行推理判断的时候，需要综合考虑句型、语法、句子之间的逻辑关系、文化背景等方面的因素。
6、认真复读，验证答案。
要用全文的中心思想统帅各个题目，研究其内在联系和逻辑关系，并依次审核那些还未打上的题目，确保理解无误。
