12.Black Box
You never see them,but they're with you every time you fly.They record where you're going,how fast you're traveling and whether everything on your airplane is functioning normally.Their ability to resist almost any disaster makes them seem like something out of a comic (漫画) book.They're known as the black box.
When planes fall from the sky,as a Yemeni airliner did on its way to the Comoros Islands in the Indian Ocean on June 30,2009,the black box is the best method for identifying what went wrong.So when a French submarine(潜水艇) discovered its homing signal five days later,it marked a huge step toward determining the cause of the disaster in which 152passengers were killed.
In 1958.Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction.That was the first model for a black box,which became a requirement on all US commercial flights by 1960.Early models often failed to resist crashes,however,so in 1965it was completely redesigned.That same year,the Federal Aviation Authority required that the boxes,which were never actually black,be painted orange or yellow to be easier to see.
Modem 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 operating functions that help experts reconstruct the aircraft's final moments.The boxes can resist powerful force and temperatures up t0 2,OOOoF.They're also able to send out signals from depths of 20,000ft.Experts believe the boxes from Air France Flight 447,which crashed near Brazil on June 1,2009,are in water nearly that deep,but statistics say they're still likely to turn up.In the approximately 20deep-sea crashes over the past 30years,only one plane's black boxes were never recovered.
67.What can we leam about the black box from the passage?C
A.It helps an airplane function normally.
B.Its ability to avoid disasters is amazing.
C.It is necessary equipment on an airplane.
D.The idea for its design comes from a comic book.
68.From the black box on the Yemeni airliner we can get information aboutB.
A.the scene of the crash and the damage
B.data for analyzing the cause of the crash
C.the total number of passengers on board
D.homing signals sent by the pilot before the crash
69.The Federal Aviation Authority required the black boxes be painted orange or yellow toA
A.make them easily identified
B.meet the international standards
C.caution people to handle them with care
D.distinguish them from the color of the plane
70.What do we know about the black boxes from Air France Flight 447?D
A.They have stopped sending homing signals.
B.They were destroyed somewhere near Brazil.
C.There is an urgent need for them to be restructured.
D.There is still a good chance of their being recovered.
分析 文章介绍黑匣子在飞机上是必不可少的,它的用途是可以在飞机出事后用来分析事故发生的原因.
解答 67---70 CBAD
67.答案C.推理题:从第一段的句子:You never see them,but they're with you every time you fly.They record where you're going,how fast you're traveling and whether everything on your airplane is functioning normally.可知黑匣子是飞机上不可缺少的部分,选C.
68.答案B.推理题:从第二段的句子:When planes fall from the sky,as a Yemeni airliner did on its way to the Comoros Islands in the Indian Ocean on June 30,2009,the black box is the best method for identifying what went wrong.可知黑盒子可以用来分析事故的原因,选B.
69.答案A.细节题:从第三段的句子:That same year,the Federal Aviation Authority required that the boxes,which were never actually black,be painted orange or yellow to be easier to see.可知把黑盒子涂成橘色或黄色是为了容易识别.选A.
70.答案D.细节题:从最后一段的句子:Experts believe the boxes from Air France Flight 447,which crashed near Brazil on June 1,2009,are in water nearly that deep,but statistics say they're still likely to turn up.可知Air France Flight 447的黑匣子有可能找到,选D.
点评 科普类文章一般由标题(Head line),导语(Introduction),背景(Back ground),主体(Main body)和结尾(End)五部分构成.标题是文章中心思想高度而又精辟的概括,但根据历年的高考情况来看,这类阅读理解材料一般不给标题,而要同学们选择标题.导语一般位于整篇文章的首段.背景交待一个事实的起因.主体则对导语概括的事实进行详细叙述,这一部分命题往往最多,因此,阅读时,同学们要把这部分作为重点.结尾往往也是中心思想的概括,并与导语相呼应,命题者常在此要设计一道推理判断题.在进行推理判断时,同学们一定要以阅读材料所提供的科学事实为依据,同时所得出的结论还应符合基本的科普常识.