17.You never see them,but they are 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 stand almost any disaster makes them seem like something out of a comic 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 June 30,2009,the black box is the best bet for identifying what went wrong.So when a French submarine(潛水艇) detected the device's homing signal five days later,the discovery marked a huge step toward determining the cause of a tragedy 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 U.S commercial flights by 1960.Early models often failed to stand crashes,however,so in 1965the device was completely redesigned and moved to the rear(尾部)of the plane---the area least subject to impact---from its original position in the landing wells (起落架艙).That same year,the Federal Aviation Authority required that the boxes,which were never actually black,be painted orange or yellow to aid visibility.
Modern airplanes have two black boxes:a voice recorder,which tracks pilots'conversation,and a flight-data recorder,which monitor fuel levels,engine noises and other operating functions that help investigators reconstruct the aircraft's final moments.Placed in an insulated(隔絕的) case and surrounded by quarter-inch-thick panels of stainless steel,the boxes can stand massive force and temperatures up to 2,000℉.When they went under the water,they're also able to emit signals from depths of 20,000feet.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 about 20deep-sea crashes over the past 30years,only one plane's black boxes were never found.

32.What does the author say about the black box?C
A.It ensures the normal functioning of an airplane
B.The idea for it's design comes from a comic book
C.Its ability to avoid disasters is incredible
D.It is an necessary device on an airplane
33.What information could be found from the black box on the Yemeni airliner?A
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
34.Why did the Federal  Aviation Authority require the black boxes be painted orange or yellow?C
A.To tell them from the color of the plane
B.To caution people to handle them with care
C.To make them easily identified
D.To meet international standards
35.What do we know about the black boxes from Air France Flight 447?A
A.There is still a good chance of their being found
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.

分析 本文屬于說明文閱讀,作者通過這篇文章主要向我們描述了記錄飛機(jī)飛行數(shù)據(jù)的黑匣子的發(fā)展歷程和具體信息.

解答 32.C.細(xì)節(jié)理解題.由Their ability to withstand almost any disaster makes them seem like something out of a comic book.They're known as the black box.可知其抵御災(zāi)害的能力是令人難以置信的,故選C
33.A.細(xì)節(jié)理解題.根據(jù)第二段1,2行When planes fall from the sky,as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30,2009,the black box is the best bet for identifying what went wrong.說明這個(gè)黑匣子里是一些數(shù)據(jù),這些數(shù)據(jù)可以分析飛機(jī)墜毀的原因,故A正確.
34.C.細(xì)節(jié)理解題.根據(jù)第三段最后兩行The same year,the Federal Aviation Authority required that the boxes,which were never actually black,be painted orange or yellow to aid visibility.說明人們把黑匣子粉刷成黃色或者橙色是為了容易尋找,故C正確.
35.A.推理判斷題.根據(jù)文章最后一句n the approximately 20 deep-sea crashes over the past 30 years,only one plane's black boxes were never recovered.說明這架飛機(jī)的黑匣子哈沒有找到,不過還是有可能性被找到的,故A正確.

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語(yǔ) 來源: 題型:閱讀理解

14.When l was a child in Minnesota,watermelon was expensive.One of my father's friends,Bernie,was a rich businessman.He owned a large store in St Paul.Every summer,when the first watermelons arrived,Bernie would call.Dad and I would take a bus to Bernie's place.We would sit on the edge of the dock(碼頭) and get ready for a big meal.
Bernie would take his knife,cut our first watermelon,hand us both a big piece and sit down next to us.Then we would bury our faces in watermelon,eating only the heart--the finest,sweetest and most seed-free(無(wú)籽的)part,and throw away the rest.
Bernie was my father's idea of a rich man.I always thought it was because he was such a successful businessman.Years later,however,1 realized that it was not Bernie's wealth itself but his way of dealing with it that my father liked.Bernie knew how to stop working,get together with friends and eat only the heart of the watermelon.Being rich is a state of mind.

25.From the passage,we know BernieB.
A.grew watermelon     
B.had a large store    
C.made telephones      
D.had no friend
26.While staying in Bernie's place,the writer and his father feltA.
A. happy              
B. tired             
C. worried            
D. hungry
27.What was Bernie's special way of eating watermelon?C
A. Eating with all its seeds.
B. Throwing away its best part.
C. Eating only its heart.
D. Eating the whole melon alone.
28.The writer wants to tell us thatD.
A. his father liked Bernie‟s wealth                   
B. Bernie wasted lots of money
C. working hard makes people successful          
D. being rich is a state of mind.

查看答案和解析>>

科目:高中英語(yǔ) 來源: 題型:填空題

8.作為家長(zhǎng),你不能允許孩子看這樣的書.
As his parent,you can'thave your childreading such a book.

查看答案和解析>>

科目:高中英語(yǔ) 來源: 題型:信息匹配

5.Five reasons your scale might be wrong
1.You weigh yourself on different days each week.
In a Cornell university study published last year,researchers analyzed the food weight diaries that 80people kept for up to a year.They found that people's weight changed considerably throughout the week.(36)G Keep weigh-in days consistent for a more accurate assessment.
2.(37)A
File this one under"Yes,scientists have actually studied this."When University of North Dakota researches weighed people with and without clothes at various times of the year,they found that men can reduce 2.5pounds for their clothing and women can reduce around two pounds,on average.
3.You don't take muscle gain into consideration.
You've heard that muscle is denser (密度大的) than fat.(38)D If you start a strength-training routine,the number on the scale (秤) might not change,but you could still lost inches and drop a clothing size or two.
4.You just drank a lot of water.
It's called water weight for a reason:Drinking one pound of water can translate to about one pound of weight.So if you stand on the scale soon after drinking an entire water bottle's worth,you might not like what you see.(39)B
5.You weigh yourself after hard exercise.
Compared with water weight,if you weigh in after a tiring cycling class,you may lose weight temporarily because you work up a good sweat.(40)E

A.You miscalculate your clothing.
B.But don't worry,it's just a temporary gain.
C.Salty foods cause your body to save extra water.
D.In fact,it takes up only about a third as much space.
E.Jump on the scale if you need to improve.
F.You should be aware of how much water you have drunk.
G.Many people were heaviest on Mondays and lightest on Fridays.

查看答案和解析>>

科目:高中英語(yǔ) 來源: 題型:填空題

12.There's no such thing as living alone.Never mind if you're (61)the only person in your house and have no dog,no cat,not even fish.You still have got several billion (62)roommates(roommate)-and so do we all.Some of them are harmless,some are (63)actually(actual) helpful and some could even kill you.They are,of course,bacteria,fungi(菌類) and viruses,and like it or not,they're on you,around you,and deeply inside you.The fact that bacteria life is everywhere is not (64)surprising(surprise).It's something you (65)learned/learnt(learn) from your childhood when your mother told you not to drink water from someone else's glass.There are lots of bacteria (66)which/that are living in your tea kettle.There are bacteria (67)sleeping (sleep) with you on your bed.Scientists are beginning  (68)to realize realize) the richness of the microbiome(微生物群系)-which is as complex as the ones(69)found (find) in oceans,rainforests,deserts and woodlands.Your house has a microbiome and (70)so do you.

查看答案和解析>>

科目:高中英語(yǔ) 來源: 題型:填空題

2.We appeal to the public to boycott goods of poor quality.

查看答案和解析>>

科目:高中英語(yǔ) 來源: 題型:閱讀理解

9.How many times have parents had to argue with their young son or daughter about getting their face out of their phone and focusing on the world around them?It's completely normal for parents of growing children to be concerned about their child's safety,but is their addiction to social media really harming them?
Social media was created to connect people with others online and has recently been added to smartphones,making it far more accessible than it originally was.This new way to easily be able to use social media has encouraged children and teens to begin to use sites such as Facebook,Twitter,and Insta gram frequently.Maturing teens and children are usually very timid(膽怯)when it comes to socializing with their families,which they sometimes view as"annoying".So,what do these kids use as a solution or an"escape"?The answer is simple.social media.
However,when they use social media for a large amount of time,parents tend to show concern for their child and blame social media for demanding their attention.
The word,"social",was entered into the term,social media,for a reason.Parents of growing teens don't seem to understand that.When they see their child using Twitter or Instagram they think that they are using it to get away from real world responsibilities.The truth,however,is that they are using it to connect with their close friends,make new friends,and receive information about what is currently happening in the modern world.
Children and teens are wrongly accused for using social media only for entertainment purposes and for huge amounts of time.Sure everyone who uses social media enjoys contacting their friends and viewing entertaining things,but how come children receive all of the blame for abusing it?Parents should really think about how social media can help children and teens learn and grow in the real world rather than it just being another distraction(分心事).
Social media as a whole has both positive and negative aspects,but after all of the feedback from pre-teens,teens,and parents is put together,it shows that media is actually helping the newer generations in their lives.
28.What causes the parents to be worried about their children?B
A.Using smartphones.     
B.Using too much social media.
C.Playing games online.      
D.Failing to socialize with families.
29.When social media is added to smartphones,it makesB.
A.smartphones operate faster          
B.it more convenient to use
C.children crazy about smartphones        
D.a(chǎn)dults feel frequently disturbed
30.According to the fourth paragraph,children use social media toC.
A.kill time                           
B.entertain themselves
C.keep themselves informed            
D.connect with their parents
31.What's the writer's attitude towards children using social media?A
A.Supportive.   
B.Doubtful.   
C.Indifferent. 
D.Disapproving.

查看答案和解析>>

科目:高中英語(yǔ) 來源: 題型:填空題

6.Miss White has called several times this morning;Obviously(obvious),there is   something very important.

查看答案和解析>>

科目:高中英語(yǔ) 來源: 題型:解答題

7.正巧這幾天有空,去公園散步如何?(happen)It happens that we are free these days.What about/How about taking/having a walk in the park?或What about having a walk in the park as we happen to be free these days?.

查看答案和解析>>

同步練習(xí)冊(cè)答案