6月英语四级阅读题.pdf
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1、XXXX 年年 6 6 月英语四级阅读题月英语四级阅读题科学的自负比起无知的自负来还只能算是谦虚。以下是为大家搜索的 xx 年 6 月阅读题,希望能给大家带来帮助!更多精彩内容请及时关注我们!You never see them, but theyre with you every time youfly. They record where youre going, how fast youretraveling and whether everything on your airplane isfunctioning normally. Their ability to withstand
2、 almost anydisaster makes them seem like something out of a ic book.Theyre known as the black box.When planes fall from the sky, as a Yemeni airliner didon its way to the Comoros Islands in the Indian Ocean June30, xx, the black box is the best bet for identifying whatwent wrong. So when a French su
3、bmarine (潜水艇) detectedthe devices homing signal five days later, the discoverymarked a huge step toward determining the cause of atragedy in which 152 passengers were killed.In 1958, Australian scientist David Warren developed aflight-memory recorder that would track basic informationlike altitude a
4、nd direction. That was the first model for ablack box, which became a requirement on all US mercialflights by 1960. Early models often failed to withstandcrashes, however, so in 1965 the device was pletelyredesigned and moved to the rear of the planethe arealeast subject to impactfrom its original p
5、osition in thelanding wells (起落架舱). That same year, the FederalAviation Authority required that the boxes, which werenever actually black, be painted orange or yellow to aidvisibility.Modern airplanes have two black boxes: a voice recorder,which tracks pilots conversations,and a flight-datarecorder,
6、 which monitors fuel levels, engine noises andother operating functions that help investigatorsreconstruct the aircrafts final moments. Placed in aninsulated (隔绝的) case and surrounded by quarter-inch-thick panels of stainless steel, the boxes can withstandmassive force and temperatures up to 2 000F.
7、 Whensubmerged, theyre also able to emit signals from depths of20 000 ft. Experts believe the boxes from Air France Flight447, which crashed near Brazil on June 1, xx, are in waternearly that deep, but statistics say theyre still likelyto turn up. In the approximately 20 deep-sea crashes overthe pas
8、t 30 years, only one planes black boxes were neverrecovered.57. What does the author say about the black box?A) It ensures the normal functioning of an airplane.B) The idea for its design es from a ic book.C) Its ability to ward off disasters is incredible.D) It is an indispensable device on an airp
9、lane.58. What information could be found from the black boxon the Yemeni airliner?A) Data for analyzing the cause of the crash.B) The total number of passengers on board.C) The scene of the crash and extent of the damage.D) Homing signals sent by the pilot before the crash.59. Why was the black box
10、redesigned 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 provide the needed data.60. Why did the Federal Aviation Authority require theblack boxes be painted orange
11、 or yellow?A) To distinguish them from the color of the plane.B) To caution people to handle 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 AirFrance Flight 447?A) There is still a good chance of their beingr
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