專家解析大學英語四級考試歷年閱讀真題(九)

　　31. What’s the function of the remote immobilizer fitted to a car?

　　A) To help the police make a surprise attack on the car thief.

　　B) To allow the car to lock automatically when stolen.

　　C) To prevent the car thief from restarting it once it stops.

　　D) To prevent car theft by sending a radio signal to the car owner.(C)

　　32. By saying “The pattern of vehicle crime has changed” (Lines 1-2. Para. 3), Martyn Randall suggests that ________.

　　A) it takes a longer time for the car thief to do the stealing

　　B) self-prepared tools are no longer enough for car theft

　　C) the thief has to make use of computer technology

　　D) the thief has lost interest in stealing cars over 10 years old(B)

　　33. What is essential in making a modem car tougher to steal?

　　A) A coded ignition key.

　　B) A unique ID card.

　　C) A special cellphone signal.

　　D) A GPS satellite positioning receiver.(A)

　　34. Why does the tracking system set a 100-metre minimum before sending an alarm to the operations centre?

　　A) To leave time for the operations centre to give an alarm.

　　B) To keep police informed of the car’s movements.

　　C) To give the driver time to contact the operations centre.

　　D) To allow for possible errors in the GPS system.(D)

　　35. What will the operations centre do first after receiving an alarm?

　　A) Start the tracking system.

　　B) Contact the car owner.

　　C) Block the car engine.

　　D) Locate the missing car.(B)

　　這是一篇講述汽車防盜系統(tǒng)的說明文。文章開頭另辟蹊徑，以場景描述開篇，敘述一個偷車賊在偷車逃跑的過程中如何受困于防盜系統(tǒng)。這個場景言簡意賅，概括了本篇所述的防盜系統(tǒng)的三個要點：immobiliser (鎖止器)，a control centre(控制中心)，以及其結(jié)果not be able to start it again(不可啟動)。第一段以場景描述形象地向讀者介紹了本篇討論的核心內(nèi)容，引起讀者的閱讀興趣，隨后的第二段馬上以專業(yè)語言對這一系統(tǒng)進行描述。這種布局法顯然好于開篇就直接介紹防盜系統(tǒng)的工作原理。

　　接下來的一段援引一個安全專家的話介紹了英國國內(nèi)汽車偷盜現(xiàn)象的現(xiàn)狀：因為車上安裝了一套技術(shù)裝置(a set of technical fixes)，使得現(xiàn)在的偷車賊無法再用以前的方法輕松地偷車成功。

　　第四段進一步講解了這套技術(shù)裝置的原理，并指出這種技術(shù)使與車輛有關(guān)的犯罪發(fā)生率下降了31%(achieve a 31% drop in vehicle-related crime)。第三、四這兩段說明的目的是為后文新的防盜系統(tǒng)的出現(xiàn)做好鋪墊——因為舊有的方法不再奏效，許多偷車賊開始使用一種更為原始的方式：getting hold of the owner’s keys(偷鑰匙)，本文的所介紹的防盜系統(tǒng)就是為了應付這種偷盜方式而出現(xiàn)的——這是第五段的內(nèi)容。

　　文章的最后兩段具體說明了這種系統(tǒng)的工作方式。第六代說明的是汽車失竊的第一階段：發(fā)出信號“send a signal to an operations centre that it has been stolen”。第七段說明第二階段：工作人員確認失竊，并協(xié)助警方追捕盜賊。

　　31. What’s the function of the remote immobilizer fitted to a car?

　　A) To help the police make a surprise attack on the car thief.

　　B) To allow the car to lock automatically when stolen.

　　C) To prevent the car thief from restarting it once it stops.

　　D) To prevent car theft by sending a radio signal to the car owner.(C)