Question

【題目】 The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with 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 unconfirmed, but increasingly, experts are pointing the blame at portable electronic device such as portable computers, radio and cassette players and mobile telephones.

RTCA, an organization which advises the aviation (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 device 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 to interference raises the risk that terrorists may use radio systems 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 an airlines

B.the drawbacks of electronic devices

C.a possible cause of aircraft incidents

D.effective safety measures for air flight

【2】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 total 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】It can be inferred from the passage that the author _____.

A.hasn’t expressed his own opinion on this problem

B.has overestimated the danger of electromagnetic interference

C.is in favor of prohibiting passengers’ use of electronic devices completely

D.regards it as unreasonable to exercise a total ban during flight

Answer 1

【答案】

【1】C

【2】D

【3】C

【4】A

【解析】

這是一篇說明文。文章主要講了在過去的15年里，飛行員已經(jīng)報(bào)告了超過100起可能是由電磁干擾引起的事故。這種干擾的來源還沒有得到證實(shí)，但是專家們?cè)絹碓蕉嗟匕阉鼩w咎于移動(dòng)電子設(shè)備，比如筆記本電腦、錄音機(jī)和移動(dòng)電話。

【1】主旨大意題。第一段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 unconfirmed, but increasingly, experts are pointing the blame at portable electronic device such as portable computers, radio and cassette players and mobile telephones.（在過去的15年里，飛行員已經(jīng)報(bào)告了超過100起可能是由電磁干擾引起的事故。這種干擾的來源還沒有得到證實(shí)，但是專家們?cè)絹碓蕉嗟匕阉鼩w咎于移動(dòng)電子設(shè)備，比如筆記本電腦、錄音機(jī)和移動(dòng)電話。）是全文的主題句，結(jié)合全文內(nèi)容，可知這篇文章主要講了飛機(jī)事故的一個(gè)可能原因。故選C。

【2】細(xì)節(jié)理解題。根據(jù)第一段In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference.（在過去的15年里，飛行員已經(jīng)報(bào)告了超過100起可能由電磁干擾引起的事故。）由此可知，過去的15年里，100起飛行事故可能是由電磁干擾引起的。故選D。

【3】細(xì)節(jié)理解題。根據(jù)第二段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.（盡管一些航空公司禁止乘客在飛機(jī)起飛和降落時(shí)使用這類設(shè)備，但考慮到許多乘客希望在飛行期間工作，大多數(shù)航空公司都不愿實(shí)施全面禁令。）由此可知，很少有航空公司想要全面禁止乘客使用電子設(shè)備，因?yàn)榇蠖鄶?shù)乘客拒絕乘坐禁止使用收音機(jī)和卡帶機(jī)的飛機(jī)。故選C。

【4】推理判斷題。文章作者客觀的說明了在過去的15年里，飛行員已經(jīng)報(bào)告了超過100起可能是由電磁干擾引起的事故。這種干擾的來源還沒有得到證實(shí)，但是專家們?cè)絹碓蕉嗟匕阉鼩w咎于移動(dòng)電子設(shè)備，比如筆記本電腦、錄音機(jī)和移動(dòng)電話。作者并沒有在這個(gè)問題上表述自己的觀點(diǎn)。故選A。

細(xì)節(jié)理解題大多是根據(jù)文章中的具體信息如事實(shí)、例證、原因、過程、論述等進(jìn)行提問的。抓住文段中的事實(shí)和細(xì)節(jié)是做好該題型的關(guān)鍵，也是做好其它類型問題的基礎(chǔ)。該題型幾乎都可以在文章中直接找到與答案有關(guān)的信息，或是其變體。在一篇短文里大部分篇幅都屬于這類圍繞主體展開的細(xì)節(jié)。做這類題一般采用尋讀法，即先讀題，然后帶著問題快速閱讀短文，找出與問題和選項(xiàng)有關(guān)的詞語或句子，再對(duì)相關(guān)部分進(jìn)行分析對(duì)比，找出答案。正確選項(xiàng)雖然一般不是原文照搬，但是一般是原文的改寫，意思不變。如換一個(gè)同義詞，把否定改為肯定，把肯定改為否定等。如第2小題，根據(jù)第一段In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference.（在過去的15年里，飛行員已經(jīng)報(bào)告了超過100起可能由電磁干擾引起的事故。）由此可知，過去的15年里，100起飛行事故可能是由電磁干擾引起的。故選D。