英语自学网 历年大学英语四级阅读理解真题集锦由英语网为大家精心整理，希望对广大考生们有多帮助。祝广大考生取得佳绩。 大学英语四级阅读理解真题：2013年12月考试真题 You never s,ee them, but theyre with you every time you fly. They record where youre going, how fast youre tr,aveling and whether everything on your airplane is functioning normally. Their ability to withstand,almost any disaster makes them seem like something out of a comic book. Theyre known as the black b,ox. When planes fall from the sky, as a Yemeni airliner did on its way to the Comoros Islands in th,e Indian Ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when,a French submarine (潜水艇) detected the devices homing signal five days later, the discovery marked,a huge step toward determining the cause of a tragedy in which 152 passengers were killed. In 1958,Australian scientist David Warren developed a flight-memory recorder that would track basic informa,tion like altitude and direction. That was the first model for a black box, which became a requireme,nt on all US commercial flights by 1960. Early models often failed to withstand crashes, however, so,in 1965 the device was completely redesigned and moved to the rear of the planethe area least subj,ect to impactfrom its original position in the landing wells (起落架舱). That same year, the Federal Av,iation Authority required that the boxes, which were never actually black, be painted orange or yell,ow to aid visibility. Modern airplanes have two black boxes: a voice recorder, which tracks pilots,conversations,and a flight-data recorder, which monitors fuel levels, engine noises and other opera,ting functions that help investigators reconstruct the aircrafts final moments. Placed in an insula,ted (隔绝的) case and surrounded by quarter-inch-thick panels of stainless steel, the boxes can withsta,nd massive force and temperatures up to 2 000F. When submerged, theyre also able to emit signa,ls from depths of 20 000 ft. Experts believe the boxes from Air France Flight 447, which crashed nea,r Brazil on June 1, 2009, are in water nearly that deep, but statistics say theyre still likely to,turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one planes black box,es were never recovered. 57. What does the author say about the black box? A) It ensures the norma,l functioning of an airplane. B) The idea for its design comes from a comic book. C) Its ability t,o ward off disasters is incredible. D) It is an indispensable device on an airplane. 58. What info,rmation could be found from the black box on the Yemeni airliner? A) Data for analyzing the cause o,f the crash. B) The total number of passengers on board. C) The scene of the crash and extent of t,he damage. D) Homing signals sent by the pilot before the crash. 59. Why was the black box redesig,ned in 1965? A) New materials became available by that time. B) Too much space was needed for its,installation. C) The early models often got damaged in the crash. D) The early models didnt provi,de the needed data. 60. Why did the Federal Aviation Authority require the black boxes be painted o,range or yellow? A) To distinguish them from the color of the plane. B) To caution people to handl,e them with care. C) To make them easily identifiable. D) To conform to international standards.,61. What do we know about the black boxes from Air France Flight 447? A) There is still a good chan,ce of their being recovered. B) There is an urgent need for them to be restructured. C) They have,stopped sending homing signals. D) They were destroyed somewhere near Brazil. 大学英语四级阅读理解真题：2012年12,月考试真题 As you are probably aware, the latest job markets news isnt good: Unemployment is still more,than 9 percent, and new job growth has fallen close to zero. Thats bad for the economy, of course.,And it may be especially discouraging if you happen to be looking for a job or hoping to change car,eers right now. But it actually shouldnt matter to you nearly as much as you think. Thats because,job growth numbers dont matter to job hunters as much as job turnover data. After all, existing jo,bs open up every day due to promotions, resignations, terminations, and retirements. (Yes, people ar,e retiring even in this economy.) In both good times and bad, turnover creates more openings than ec,onomic growth does. Even in June of 2007, when the economy was still humming along, job growth was o,nly 132,000, while turnover was 4.7 million! And as it turns out, even today with job growth near,zero over 4 million job hunters are being hired every month. I dont mean to imply that overall,job growth doesnt have an impact on ones ability to land a job. Its true that if total employment,were higher, it would mean more jobs for all of us to choose from (and compete for). And its true,that there are currently more people applying for each available job opening, regardless of whether,its a new one or not. But what often distinguishes those who land jobs from those who dont is the,