5．See a cellphone cover that you like on Taobao？Forget about placing an order，paying the bill online and waiting for days for it to be delivered to you．In the near future，you'll be able to get it in minutes just by hitting"print"on your computer．You might find it hard to believe that you could actually"print"an object like you would a picture．But it is not that hard to understand how it would work．Just as a traditional printer sprays ink onto paper line by line，modern 3D 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 3D printer uses are mainly plastic，resin and certain metals．The thinner each layer is-from a millimetre to less than the width of a hair-the smoother and finer the object will be．This may sound like a completely new technology，but the truth is that 3D printing has been around since the late 1980s．Back then，it was barely affordable for most people，so few knew about it．Last year，though，saw a big change in the 3D printing industry-printers became much cheaper．For example，10years ago a desktop 3D printer might have cost￡20，000，while now they cost only about￡1，000，according to the BBC．Taken out of the factory and introduced to more diverse and common uses，3D printing can create just about anything you can think of-flutes，bikinis，jewelry，aircraft parts and even human organs．In fact，scientists from Cornell University in New York have just made an artificial ear using a 3D printer，according to Science Daily．The fake ear looks and acts exactly like a natural one．However，as 3D printing becomes more common，it may bring about certain problems-such as piracy．"Once you can download a coffee maker，or print out a new set of kitchen utensils on your personal 3D printer，who will visit a retail store again？"an expert in 3D printing told Forbes News．Even more frightening，what if anyone in the world could use a 3D printer to print out a fully functioning gun？
8．According to the article，in the future，the 3D printing technology willB．
A．enable people to make better purchases online　  
B．change the way we make many products　  
C．be applied as widely in our daily life as computers　  
D．shorten the time it takes for people to get what they buy online
9．What happened in the 3D printing industry last year？D
A．The 3D printing technology was taken out of the factory．
B．The 3D printing technology began to be used in various fields．
C．The 3D printer was used for medical treatment for the first time．
D．The 3D printer became more affordable for consumers．
10．How is the last paragraph developed？A
A．By giving examples．B．By making comparisons．
C．By analyzing the cause and effect．D．By presenting research findings．
11．What is the best title of the passage？D
A．Great Demand for 3D Printers　　
B．Technology in the Future
C．Online Shopping Disappearing　　
D．Printing out Everything．

分析 本文屬于說明文閱讀，作者通過這篇文章向我們介紹了未來的3D打印機，告訴我們它有機會改變我們生產(chǎn)很多產(chǎn)品的方式，而它的價錢也很合適，能讓很多顧客負擔(dān)得起，因此可能會被廣泛使用．

解答 8．B  細節(jié)理解題．根據(jù)Just as a traditional printer sprays （噴） 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．可知未來的3D打印有機會改變我們生產(chǎn)很多產(chǎn)品的方式，故選B．
9．D  細節(jié)理解題．根據(jù)Last year，though，saw a big change in the 3-D printing industry---printers became much cheaper．For example，10 years ago a desktop 3-D printer might have cost£20，000，while now they cost only about£1，000，according to the BBC．可知去年3D打印機已經(jīng)變得很便宜了，因此顧客可以支付得起3D打印機，故選D．
10．A  推理判斷題，根據(jù)文章最后Once you can download a coffee maker，or print out a new set of kitchen utensils on your personal 3D printer，who will visit a retail store again？"an expert in 3D printing told Forbes News．可知作者在本段中使用了舉例說明的方法來組織這個段落，故選A．
11．D  主旨大意題．通讀全文可知本文主要講述的就是3D打印機在未來的廣泛使用，并且告訴我們3D打印機能夠改變很多做事的方式方法．故選D．

點評 考查學(xué)生的細節(jié)理解和推理判斷能力．做細節(jié)理解題時一定要找到文章中的原句，和題干進行比較，再做出正確選擇．在做推理判斷題時不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進行合乎邏輯的推理判斷．

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：選擇題

2．I had just finished my work ______ my friend came to visit me．（　�。�
A．whileB．whenC．asD．if

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

16．"Sleep-disordered breathing"is a term for a group of conditions that can interfere with nornlal breathing while people sleep．These include snoring，mouth-breathing and sleep apnea（窒息）．Sleep-disordered breathing can do more than just leave people feeling tired the next day．It can also affect people's health．In children the effects can include behavioral and emotional problems．
In a new study．1ed by Karen Bonuck at the Einstein College of Medicine．researchers asked parents about their children's breathing from when they were babies up to about age seven．The study finds sleep-disordered breathing is associated with a fifty percent increase in outcomes including hyperactivity（多動癥），aggressiveness and problems relating to other children．
Ms．Bonuck says the more serious the breathing problems，the more serious the behavioral issues were likely to be．Other studies have：linked sleep with children's behavior，but this study was extensive enough to：reject other possible causes．
How well do you sleep？A popular belief is that sleep gets worse with age．But．in another new study，those who reported the fewest problems with the quality of their sleep were people in their eighties．
Researchers did a telephone survey of American aduhs．Michael Grandner at the University of Pennsylvania medical school says the original goal was to confirm that aging is connected with increased sleep problems．The survey did find an increase during middle age，worse in women than men．But except for that，people reported that their sleep quality improved as they got older．At least they felt it did．
Mr．Grandner says．"Even if sleep among older Americans is actually worse than in younger adults，feelings about it still improve with age．"
In the study，health problems and depression were linked with poor sleep．But，based on the study．Mr．Grandner says older people who are not sick or depressed should be reporting better sleep．"If they're not．they need to talk to their doctor．"he says．He says heahtlh care providers generally dismiss sleep complaints from older adults as a normal part of aging．
66．Sleep-disordered breathing makes it hard for people to haveDwhile sleeping．
A．mouth-breathing    B．snoring    C．sleep apnea      D．normal breathing
67．Karen Bonuck thinks sleep-disordered breathing is likely to impact children'sB．
A．hobbies      B．behavior         C．study        D．diet
68．The telephone survey showed thatA．
A．older Americans'sleep quality improved with age
B．older Americans hatl better sleep than younger adults
C．people in their eighties had the most sleep problems
D．men had more sleep problems than women
69．From Mr．GraMner's words in the last paragraph we call learnB．
A．older adults with poor sleep needn't see doctors
B．we shouht not ignore sleep complaints from older adults
C．most doctors place great emphasis on older adults'poor sleep
D．sleep complaints from older adults are a normal part of aging
70．The text is mainly aboutA．
A．new findings on sleep in children，older adults
B．people's health problems
C．children's breathing problems
D．older adults'sleep complaints．

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

13．一Why didn't you attend yesterday's get-together party？
一I______，but the heavy snow made my travel impossible．（　�。�
A．planned toB．would plan toC．was planning toD．had planned to

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

20．Innocent Fast Food Restaurant
A study by academics from the University of California and Northwestern University claimed that"the causal link between the consumption of restaurant foods and obesity （肥胖） is minimal at best．"
It argued that a tax on high-calorie （卡路里） food，（33）whichwas proposed by many health campaigners in the US and Britain，might therefore not be an effective way for governments to deal with the problem．
It analyzed data on calorie intake around the country，which （34）had been collected（collect） before under the leadership of the US Department of Agriculture．The study found that people living closer （35）torestaurants were not significantly more likely to be obese than people living further away，（36）indicating（indicate） that easy access to restaurants had little effect．
It also showed that while restaurant meals typically held more calories than home-produced food，many customers often make up for this by eating （37）less（little） throughout the rest of the day．
"Obese people who ate at restaurants，"the study indicated，"also eat more when they eat at home．"
The US government estimates （38）thatabout one in three Americans，or 100 million in total，are obese．Last month it was predicted that 75 percent of Americans would be overweight in 2020．
The problem is thought to cost Americans between 150billionand170 billion in annual medical costs．
"While taxing restaurant meals might means （39）changing（change） where these consumers eat，"the study's authors，Michael Anderson and David Matsa，wrote，"our study results suggest that a tax （40）wouldbe unlikely to affect their potential tendency to overeat．"

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

10．He often asks the advice of his friends and then does the opposite of ______ they have suggested．（　�。�
A．thatB．whoC．whatD．which

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

17．This plant can cause ________ reactions in some children．If they touch it they will become ill．（　�。�
A．allergicB．alternativeC．adequateD．authentic

查看答案和解析>>

科目：高中英語 來源： 題型：完形填空

3．Try It a Different Way
Bobby Moresco grew up in New York's Hell's Kitchen，a tough working-class neighbourhood on Manhattan's West Side．By tradition he（41）B have been a construction worker or a policeman，just like his father and most of his childhood pals．（42）C，he wanted out．Attracted by the bright lights from the time Bobby was a teen，he tried to（43）D．"I wasn't a（44）D actor，but I had a driving need to do something  （45）A with my life，"he said．
He moved to Hollywood，promising to find his（46）C．But he didn't make it．For almost 10years，he drove a taxi and worked as a waiter，volunteering at an actors'workshop that he opened in Hollywood．But Moresco kept working at his（47）B career．
In 1983his younger brother was murdered in a mob-linked killing．Moresco was forced to give up working and moved back to his（48）C neighbourhood．In 1988he finally wrote a play that was（49）Dto his life．Called Half-Deserted Streets，it was based on his brother's（50）Cand staged at a small theater．A Hollywood producer（51）Bto see it and asked him to work on a screenplay．
His（52）Dgrew，and he got enough assignments to move back to Hollywood．However，it was never easy．By 2003，he was（53）Aout of work and out of cash（54）B he got a call from Paul Haggis，a director who had befriended him．The two worked on the script and tried some famous studios，but their request was（55）D．Moresco believed so（56）Ain the script that he borrowed money，and sold his house．At last the writers found an independent film producer who would take a chance．
The（57）B，Crash，slipped into the theatres in May 2005，and quietly became both a hit and an overnight success．It（58）Chim two Academy Awards-Best Film Editing and Best Writing．
At the age of 54，Bobby Moresco became an（59）C success．"If you have something you want to do in life，don't think about the problems，"he says，"think about the（60）Ato get it done．"

41．A．mustB．shouldC．canD．need
42．A．ThenB．ThereforeC．HoweverD．Besides
43．A．studyB．driveC．teachD．a(chǎn)ct
44．A．simpleB．strictC．firmD．good
45．A．differentB．impressiveC．effectiveD．necessary
46．A．occasionB．treasureC．fortuneD．possibility
47．A．a(chǎn)ffordedB．chosenC．respectedD．offered
48．A．earlyB．wornC．oldD．passed
49．A．turnedB．pointedC．belongedD．related
50．A．a(chǎn)rrestingB．injuringC．killingD．shooting
51．A．a(chǎn)dvisedB．happenedC．intendedD．planned
52．A．influenceB．a(chǎn)mbitionC．successD．reputation
53．A．a(chǎn)gainB．evenC．finallyD．still
54．A．beforeB．whenC．sinceD．while
55．A．letoutB．looked downC．taken offD．turned down
56．A．stronglyB．hardlyC．deeplyD．bravely
57．A．a(chǎn)ctorB．movieC．studioD．director
58．A．gaveB．failedC．wonD．a(chǎn)llowed
59．A．effortlessB．enjoyableC．overnightD．optimistic
60．A．waysB．linesC．mannersD．a(chǎn)ctions

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

4．This province which       thirteen counties is far away from the sea．（　�。�
A．makes upB．consists ofC．is includedD．is contained．

查看答案和解析>>

同步練習(xí)冊答案