5．How do people traditionally manufacture （制造） things？They usually start with a sheet of metal，wood or other material and cut，drill （鉆） and shave it to create a desired shape．Sometimes，they use a mold （模具） made of metal or sand，pour liquid plastic or metal into it and let it cool to create a solid part．
   Now，a completely different method is gaining popularity．
   On Oct.9，2013，London Science Museum kicked off its new exhibition，3-D：Printing the Future，with over 600 3-D printed objects on display，including space probes （探測(cè)器），toy dolls and even human organs-basically any product you can think of，reported Live Science．
   You might find it hard to believe that an object can actually be"printed out"like a picture．But it is not that hard to understand how it works．Just as a traditional printer sprays （噴灑） ink onto paper line by line，modern 3-D printers spread material onto a surface layer by layer，from the bottom to the top，gradually building up a shape．
   Instead of ink，the materials the 3-D printer uses are mainly plastic，resin （樹脂） and certain metals．The thinner each layer is-from a millimeter to less than the width of a hair-the smoother and finer the object will be．And objects always come out in one piece，sparing you the trouble of putting different parts together afterward．
   For example，10 years ago a desktop 3-D printer might have cost￡20，000 （200，000 yuan），while now it costs only about￡1，000，according to the BBC．In fact，3-D printers have been around for some time，but until recently they hadn't been very popular since few people could afford them．Last year，though，saw a big decrease in the price of 3-D printers．
   However，as 3-D printing technology becomes more commonplace，it may trigger certain problems．One of them is piracy （盜版）．"Once you can download a coffee maker，or print out a new set of kitchen utensils （餐具） on your personal 3-D printer，who will visit a retail （零售的） store again？"an expert on 3-D printing told Forbes News．
   Even more frightening，the world's first 3-D printed gun was successfully fired in the US in May of this year，which means that 3-D printing could potentially give more people access to weapons．
64．According to the article，in the future，3-D printing technology will probablyA．
A．change the way people make products
B．be applied as widely in our daily lives as computers
C．forbid many countries to make purchases of weapons
D．take the place of normal printers and save lots of energy
65．What was the big event that happened in the 3-D printing industry last year？D
A．Over 600 3-D printed objects were on display in an exhibition．
B.3-D printing technology came to be used in various fields．
C．Th e world's first 3-D printed gun was successfully made．
D．The 3-D printer became more affordable for consumers．
66．What is the author's attitude toward 3-D printing technology？B
A．Amused．B．Objective．C．Supportive．D．Negative．

分析 本文為說(shuō)明文，文章介紹了3-D打印機(jī)的信息，并客觀進(jìn)行評(píng)價(jià)．

解答 64．A．推理判斷題．文章第一段最后一句Sometimes，they use a mold （模具） made of metal or sand，pour liquid plastic or metal into it and let it cool to create a solid part講了3-D打印機(jī)可以打印出基本上你可以想出的東西．由此可以推斷出3-D打印機(jī)可以改變?nèi)藗冎圃飚a(chǎn)品的方式．故A正確．由文章第四段倒數(shù)第二句but until recently they hadn't been very popular since few people could afford them．可知很少人能夠支付的起3-D打印機(jī)．故B錯(cuò)誤．C、D文章均沒有提及．故選A．
65．D．細(xì)節(jié)理解題．由文章第四段最后一句Last year，though，saw a big decrease in the price of 3-D printers．可知，去年3-D打印機(jī)的價(jià)格下降很多．D選項(xiàng)意為3-D打印機(jī)是很多人能夠支付的起的，符合語(yǔ)境．故選D．
66．B．觀點(diǎn)態(tài)度題．本文作者客觀的談及了3-D打印機(jī)的好處和壞處．objective，客觀的． 故選B．

點(diǎn)評(píng) 本文是一個(gè)科教類閱讀理解，題目涉及多道細(xì)節(jié)理解題，做題時(shí)結(jié)合原文和題目有針對(duì)性的找出相關(guān)語(yǔ)句進(jìn)行仔細(xì)分析，結(jié)合選項(xiàng)選出正確答案．推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測(cè)，一定要做到有理有據(jù)．

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：書面表達(dá)

13．你的英國(guó)朋友Jim所在的學(xué)校要組織學(xué)生來(lái)中國(guó)旅行，有兩條線路可以選擇："長(zhǎng)江之行"或者"泰山之旅"．Jim來(lái)信希望你能給些建議．請(qǐng)你給他回信，內(nèi)容包括：
1．你建議的線路；
2．你的理由；
3．你的祝愿．
注意：
1．詞數(shù)不少于50；
2．開頭和結(jié)尾已給出，不計(jì)入總詞數(shù)．
Dear Jim，
I am glad to learn that you are coming to visit China．
Of the two routes given by your school，I strongly recommend that the trip to the Yangtze River deserve the effort．For one thing，you can experience rich Chinese culture along the river，which has been handed down from generation to generation； For another，the river，extending as long as 6300 kilometres，runs through different parts of China．As a result，it can provides splendid landscape of different kinds．
I believe that the trip，both relaxing and rewarding，is bound to be a memorable experience for you．
Yours，
Li Hua．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：書面表達(dá)

13．On a bright，warm July afternoon，Mac Hollan，a primary school teacher，was cycling from his home to Alaska with his friends．One of his friends had stopped to make a bicycle repair，but they had encouraged Mac to carry on，and they would catch up with him soon．As Mac pedaled （騎行） along alone，he thought fondly of his wife and two young daughters at home．He hoped to show them this beautiful place someday．
Then Mac heard quick and loud breathing behind him．"Man，that's a big dog!"he thought．But when he looked to the side，he saw instantly that it wasn't a dog at all，but a wolf，quickly catching up with him．
Mac's heart jumped．He found out his can of hear spray．With one hand on the bars，he fired the spray at the wolf．A bright red cloud enveloped the animal，and to Mac's relief，it fell back，shaking its head．But a minute later，it was by his side again．Then it attacked the back of Mac's bike，tearing open his tent bag．He fired at the wolf a second time，and again，it fell back only to quickly restart the chase（追趕）．
Mac was pedaling hard now．He waved and yelled at passing cars but was careful not to slow down．He saw a steep uphill climb before him．He knew that  once he hit the hill，he'd be easy caught up and the wolf's teeth would be tearing into his flesh．
At this moment，Paul and Becky were driving their car on their way to Alaska．They didn't think much of it when they saw two cyclists repairing their bike on the side of the road．A bit later，they spotted what they，too，assumed was a dog running alongside a man on a bike．As they got closer，they realized that the dog was a wolf．Mac heard a large vehicle behind him．He pulled in front of it as the wolf was catching up fast，just a dozen yards away now．
注意：
1．所續(xù)寫短文的詞數(shù)應(yīng)為150左右；
2．應(yīng)使用5個(gè)以上短文中標(biāo)有下劃線的關(guān)鍵詞語(yǔ)；
3．續(xù)寫部分分為兩段，每段的開頭語(yǔ)已為你寫好；
4．續(xù)寫完成后，請(qǐng)用下劃線標(biāo)出你所使用的關(guān)鍵詞語(yǔ)．
      The car abruptly stopped in front of him．Paul shouted through the window，"Get in the car quickly!"Mac jumped off the bicycle andjumped into the back seat of the car without hesitation．（高分句型一） In the meanwile，the wolf caught up．Luckily，the car's door washard enough and Mac was safe．Beeky threw somefood out of the window and Paul pressed the button of the horn to make an alert．Finally，the wolf left and disappeared．"Oh my god，my friends are still repairing the bicycle!"shouted Mac．Without a second thought，Paul drove the car quickly back to find the two cyclists，only to find they were gone．（高分句型二）
      A few minutes later，the other two cyclists arrived．"Thank godness!Where did you go？"Mac held his two friends tightly in arms．"I'm happy to see you again，my friend．Inoticed a big dog running on the road when I was repairing my bike．And then we realized thatit was a wolf，so we kept hiding ourselves until it went away．""Oh，my god，without these two gentlemen's help，I would be the dinner of the wolf．"Finally，though tired，they continued their way and reached Alaska，safe and sound．（高分句型三） What an unforgettable experience they shared!．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

13．Winter is the time of year when people feel very blessed．This isn't becau se people feel thankful for the cold weather，nor because the important festivals---Christmas or Spring Festival---offer an excuse to celebrate．In fact，"Bless you!"is a common response if someone sneezes，a symptom（癥狀）of catching a cold or the flu．
   Colds and the flu are the most common illnesses of autumn and winter as the weather gets colder．Viruses cause them．If you get one you will feel annoyed，but it is not usually serious．The flu is spread from person to person when we come into contact with a person with the virus．We get the virus on our hands and then we touch our noses and our mouths．We can pass on the flu before we realize we have it．You can infect（傳染） others one day before symptoms develop and for up to five days after becoming sick．
   Getting a flu vaccination is the best way to prevent the illness．Even if your body has built up antibodies（抗體）for one kind of flu．The vaccine（疫苗）is only effective for one year and viruses are different from year to year，so it is necessary to get a flu vaccination every year．The best time to get the vaccination is October or November．Besides，there are other ways to reduce your chance of getting a flu．Wash your hands．Get enough rest．Eat garlic regularly．Don't let stress control you．Exercise regularly．
29．We say"Bless you!"whenB．
A．we feel annoyed at someone．
B．someone sneezes．
C．someone catches a cold or the flu．
D．we celebrate some important festivals．
30．The passage is intended to tell usD．
A．how to keep healthy．
B．the causes of flu．
C．the influence of flu．
D．what to do about flu．
31．We can infer the passage thatD．
A．People catch a cold or the flu only in autumn or winter．
B．people getting a flu vaccination won't catch the illness for life．
C．flu can cause symptoms such as sore throat and a runny nose．
D．people with the virus of flu but having no symptoms can still infect（傳染） others．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：信息匹配

20．Michael's birthday was coming soon，so he asked his dad for a bicycle so that he wouldn't have to walk to school anymore．（36）EMichael got a book instead but he did not complain （ 抱怨 ）．
One bright and sunny day while Michael was walking past a bookstore on his way to school，he saw a big boy on a bike．The bike was too small for the boy．（37）FThe boy was a student in Michael's school．Michael recognized him．The boy's name was William．His leg seemed to have broken．Michael picked up William's bike which was not damaged and rode to the nearby hospital to get help（38）G．Michael rode William's bike to school so he would not be late for class．
After school，Michael quickly rode the bicycle to William's house with a book for him．（39）ABut he had to put some medicine on his leg and stay in bed for some time．
To Michael's surprise，William was getting a new bike for his birthday in two months so he let Michael have his old bike．Michael was overjoyed（喜出望外）．
（40）CMichael visited William every day until Williams's leg was better．

A．Luckily，William was not seriously hurt．
B．Michael found it interesting and couldn't help laughing．
C．From then on，Michael and William became good friends
D．William gave his new bike to Michael to show his thanks．
E．However，Michael's dad had lost his job and did not have much money．
F．As the boy was turning around a corner，the bike crashed into a tree．
G．A few minutes later，an ambulance （救護(hù)車） came and took William to the hospital．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

10．Alan Tong was the worst driver in town．He had an accident of some kind almost every week．
Alan lived with his mother．His mother was always worried about him．Every day she worried that police would appear to arrest him．This wasn't a foolish worry because they usually visited Alan's house about once a week to send a speeding ticket or to serve him notice to appear in court（法庭）．
Most of his accidents were caused by his carelessness．He drove through red lights．He turned left or drove at night without proper lights．He overtook other cars on hills．In short，there wasn't a traffic rule that Alan had not broken，and he had had so many accidents that it was a surprise that he was still alive．But luckily for Alan，he had never hurt anyone in his accidents or even gone to the hospital．
   Although Alan wasn't popular with the police，he was very popular with his lawyer．Alan's lawyer，Mr．Tsui，had earned a lot of money from Alan's cases and always felt very excited when he saw Alan coming into his office．
   One day Alan was working in the garage，painting his car when his mother walked in．"What are you doing？"his mother asked．
"Painting my car，"Alan replied．
"I can see that，"his mother said，"but why are you painting one side of the car red and the other side blue？""Because every time I have to go to court for a traffic crime，there are always two witnesses （目擊證人）．"What color was the car？"the judge always asks，and the two witnesses always give the same answer．Well，in the future，one witness will say it was blue．Mr．Tsui will then say to the judge，"Your honor，the witnesses cannot even agree on th e color of the car involved in the accident．"And the judge will have to dismiss the case against me．
67．Which of the following is true of Mr．Tsui？D
A．He always volunteered to help Alan．
B．He was popular with the police．
C．He was good friends with Alan．
D．He looked forward to Alan's visit．
68．What was Alan doing when his mother walked in the garage？B
A．Painting his car all red．
B．Painting his car two colors．
C．Painting the garage．
D．Cleaning his car．
69．What is the purpose of what Alan did to his car in the last paragraph？A
A．To confuse the evidence against him．
B．To help the judge in court．
C．To make the witnesses agree．
D．To leave a good impression in court．
70．What's the meaning of the underlined word"dismiss"in the last paragraph？A
A．Remove．B．Continue．C．Reconsider     D．Accept．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

14．People are being lured （引誘）onto Facebook with the promise of a fun，free service without realizing they're paying for it by giving up large amounts of personal information．Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages．
Most Facebook users don't realize this is happening．Even if they know what the company is up to，they still have no idea what they're paying for Facebook because people don't really know what their personal data is worth．
The biggest problem，however，is that the company keeps changing the rules．Early on，you keep everything private．That was the great thing about facebook-you could create your own little private network．Last year，the company changed its privacy rules so that many things-your city，your photo，your friends'names-were set，by default （默認(rèn)）to be shared with everyone on the Internet．
According to Facebook's vice-president Elliot Schrage，the company is simply making changes to improve its service，and if people don't share information，they have a"less satisfying experience"．
Some critics think this is more about Facebook looking to make more money．Its original business model，which involved selling ads and putting them at the side of the page，totally failed．Who wants to look at ads when they're online connecting with their friends？
The privacy issue has already landed Facebook in hot water in Washington．In April．Senator Charles Schumer called on Facebook to change its privacy policy．He also urged the Federal Trade Commission to set guidelines for social-networking sites．"I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them，"Schrage admits．
I suspect that whatever Facebook has done so far to invade our privacy，it's only the beginning，which is why I'm considering deactivating（撤銷）my account．Facebook is a handy site，but I'm upset by the idea that my information is in the hands of people I don't know．That's too high a price to pay．

66．What do we learn about Facebook from the first paragraph？C
A．It is a website that sends messages to targeted users．
B．It makes money by putting on advertisements．
C．It profits by selling its users'personal data．
D．It provides loads of information to its users．
67．What does the author say about most Facebook users？B
A．They are reluctant to give up their personal information．
B．They don't know their personal data enriches Facebook．
C．They don't identify themselves when using the website．
D．They care very little about their personal information．
68．Why does Senator Charles Schumer propose？C
A．Setting guidelines for advertising on websites．
B．Banning the sharing of users'personal information．
C．Working out regulations for social-networking sites．
D．Removing ads from all social-networking sites．
69．Why does the author plan to cancel his Facebook account？C
A．He is dissatisfied with its current service．
B．He finds many of its users untrustworthy．
C．He doesn't want his personal data to be used in a wrong way．
D．He is upset by its frequent rule changes．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

15．Can dogs and cats live in perfect harmony in the same home？People who are thinking about adopting a dog as a friend for their cats are worried that they will fight．A recent research has found a new recipe of success．According to the study，if the cat is adopted before the dog，and if they are introduced when still young （less than 6months for cats，a year or dogs），it is highly probable that the two pets will get along swimminly．Two-third of the homes interviewed reported a positive relationship between their cat and dog．
However，it wasn't all sweetness and light．There was a reported coldness between the cat and dog in 25% of the homes，while aggression and fighting were observed in 10% of the homes．One reason for this is probably that some of their body signals were just opposite．For example，when a cat turns its head away it signals aggression，while a dog doing the same signals submission．
In homes with cats and dogs living peacefully，researchers observed a surprising behavior．They are learning how to talk each other's language．It is a surprise that cats can learn how to talk‘dog'and dogs can learn how to talk‘Cat'．
What's interesting is that both cats and dogs have appeared to develop their intelligence．They can learn how to read each other's body signals，suggesting that the two may have more in common than we previously suspected．Once familiar with each other's presence and body language，cats and dogs can play together，greet each other nose to nose，and enjoy sleeping together on the sofa．They can easily share the same water bowl and in some cases groom （梳理） each other．
The significance of the research on cats and dogs may go beyond pets─to people who don't get along，including neighbors，colleagues at work，and even world superpowers．If cats and dogs can learn to get along，surely people have a good chance．
25．Some cats and dogs may fight whenA．
A．they misunderstood each other's signals
B．they look away from each other
C．they are cold to each other
D．they are introduced at an early age
26．What is found surprising about cats and dogs？B
A．They eat and sleep each other．
B．They learn to speak each other's language．
C．They observe each other's behaviors．
D．They know something from each other's voices．
27．It is suggested in Paragraph 4that cats and dogsC．
A．have common interests
B．have a common body language
C．a(chǎn)re less different than was thought
D．a(chǎn)re less intelligent than was expected
28．What can we human beings learn from cats and dogs？C
A．We should live in peace with animals．
B．We should know more about animals．
C．We should learn to live in harmony．
D．We should learn more body languages．

查看答案和解析>>

同步練習(xí)冊(cè)答案