18．With the help of Gloria，his wife，Tom Peterson worked for many years to build a solid business selling television sets，stereo systems，and home appliances．Tom developed an excellent（36）Bwith their full satisfaction guarantee and friendly service．He was proud of his high percentage of repeat（37）A．
About five years ago，Tom was（38）Cby the owners of a competing company，Stereo Super Stores．They wanted him to（39）C them out．The price was very attractive．Everything looked good．Before making his final（40）ATom asked Gloria what she thought about the purchase．She told him that（41）Cthe numbers looked good it didn't feel （42）Cto her．However，Tom was so self-confident and so convinced that this was a rare（43）D，he went ahead and made the（44）B．Within months he discovered that he had made a big（45）D．He had paid too much for a（46）Acompany．He tried as hard as he could to make it work out，but he couldn't turn things（47）B．He was forced into bankruptcy（破產(chǎn)）．He was about to lose everything，including his（48）Abusiness．
Tom was embarrassed，but he is a survivor．He looked at his situation．He decided to（49）C admit his mistake and，rather than getting stuck in lawsuits（訴訟），he would focus his（50）Don saving and rebuilding his original business．He saw also that he had made a mistake by not listening to his（51）B，and that he needed to learn from this（52）A．He dealt with the crisis in a way that delighted  people，who in turn （53）Brespect for him．Old customers poured into his store．He and Gloria （54）Bto changes in retailing（零售） and have built an even better business than before．
In the business world，it is natural to gain and lose，of（55）DPeterson's experience is an example．Only those who regard their mistakes as gifts and learn from them attract endless profits．

36．A．popularityB．reputationC．causeD．foundation
37．A．customersB．a(chǎn)ssistantsC．friendsD．visitors
38．A．a(chǎn)ppointedB．a(chǎn)pprovedC．a(chǎn)pproachedD．a(chǎn)ppreciated
39．A．sellB．payC．buyD．check
40．A．decisionB．choiceC．determinationD．judgement
41．A．a(chǎn)s thoughB．now thatC．even thoughD．in case
42．A．terribleB．fairC．rightD．a(chǎn)ttractive
43．A．possibilityB．occasionC．eventD．opportunity
44．A．profitB．purchaseC．reservationD．a(chǎn)ppointment
45．A．differenceB．discoveryC．commitmentD．mistake
46．A．dyingB．controversialC．clumsyD．tiring
47．A．inB．a(chǎn)roundC．downD．up
48．A．originalB．variousC．uniqueD．precious
49．A．quietlyB．loudlyC．openlyD．secretly
50．A．beliefsB．spiritsC．a(chǎn)ttemptsD．energies
51．A．producerB．wifeC．relativeD．a(chǎn)dviser
52．A．experienceB．enterpriseC．processD．history
53．A．wonB．showedC．a(chǎn)chievedD．earned
54．A．belongedB．a(chǎn)daptedC．a(chǎn)doptedD．a(chǎn)ppealed
55．A．themB．whatC．thatD．which．

分析 文章介紹Tom Peterson原來生意做的很好，但是因為自己犯了一個錯誤，導(dǎo)致生意破產(chǎn)，但是他沒有消沉，而是努力挽回局面，并適應(yīng)市場的改變，讓原來的生意重新紅火起來，我們獲得一個道理：吸取一個教訓(xùn)，可以贏得一份禮物．

解答 36-40BACCA    41-45 CCDBD    46-50 ABACD    51-55 BABBD
36：B考查名詞辨析：A．popularity流行，人氣，B．reputation名聲，C．cause 原因，D．foundation基礎(chǔ)，從with their full satisfaction guarantee and friendly service．可知湯姆因為售后服務(wù)好所以名聲很好，選B
37：A考查名詞辨析：A．customers顧客，B．a(chǎn)ssistants助手，C．friends朋友，D．visitors游客，他為回頭客很多而驕傲，選A
38：C考查動詞辨析：A．a(chǎn)ppointed 任命，B．a(chǎn)pproved同意，C．a(chǎn)pproached靠近，D．a(chǎn)ppreciated欣賞，5年前，一個競爭對手的公司主人朝湯姆走過來，選C
39：C考查動詞辨析：A．sell銷售，B．pay付錢，C．buy買，D．check核對，從下文的The price was very attractive．可知這個公司希望湯姆能收購他們，選C
40：A考查名詞辨析：A．decision決定，B．choice選擇，C．determination決定，D．judgement判斷，在做最后的決定前，湯姆問Gloria對這次的收購怎么看．選A
41：C考查連詞辨析：A．a(chǎn)s though 好像，B．now that既然，C．even though即使，D．in case以防，她告訴他即使數(shù)字看起來很好，但是她感覺不對．選C
42：C考查形容詞辨析：A．terrible 可怕的，B．fair公平的，C．right對的，D．a(chǎn)ttractive有吸引力的，她告訴他即使數(shù)字看起來很好，但是她感覺不對．選C
43：D考查名詞辨析：A．possibility可能，B．occasion偶然，C．event事件，D．opportunity機(jī)會，湯姆太自信的，相信這是一次很好的機(jī)會，選D
44：B考查名詞辨析：A．profit利益，B．purchase購買，C．reservation保留，D．a(chǎn)ppointment任命，委派，從上文：Tom asked Gloria what she thought about the purchase．可知湯姆進(jìn)行了收購，選B
45：D考查名詞辨析：A．difference不同，B．discovery發(fā)現(xiàn)，C．commitment奉獻(xiàn)，投入，D．mistake錯誤，從下文的：He had paid too much for a 46 company．可知他意識到自己犯了一個錯誤，選D
46：A考查形容詞辨析：A．dying快死的，B．controversial有爭議的，C．clumsy笨拙的，D．tiring令人疲勞的，從下文的：He tried as hard as he could to make it work out，but he couldn't turn things 47．可知他花了很多錢買的是一個快要破產(chǎn)的公司，選A
47：B考查副詞辨析：A．in在…里面，B．a(chǎn)round在…周圍，C．down向下，D．up向上，他盡了最大努力，但是不能扭轉(zhuǎn)局面，turn around轉(zhuǎn)身，（使）好轉(zhuǎn)，選B
48：A考查形容詞辨析：．A．original最初的，原始的，B．various各種各樣的，C．unique獨特的，D．precious珍貴的，從下文he would focus his 50 on saving and rebuilding his original business．可知他要失去一切包括他以前的公司，選A
49：C考查副詞辨析：A．quietly安靜地，B．loudly大聲地，C．openly公開地，D．secretly秘密地，他決定公開承認(rèn)自己的錯誤，選C
50：D考查名詞辨析：A．beliefs信念，B．spirits精神，C．a(chǎn)ttempts試圖，D．energies精力，他將經(jīng)歷都用來拯救重建原來的公司，選D
51：B考查名詞辨析：A．producer生產(chǎn)商，B．wife妻子，C．relative親戚，D．a(chǎn)dviser顧問，勸告者，從上文的句子：Tom asked Gloria what she thought about the purchase．可知湯姆沒有聽妻子的話，選B
52：A考查名詞辨析：A．experience經(jīng)驗，經(jīng)歷，B．enterprise 企（事）業(yè)單位，事業(yè)，計劃，事業(yè)心，進(jìn)取心，C．process過程，D．history歷史，他知道要從這次經(jīng)歷中吸取教訓(xùn)，選A
53：B考查動詞辨析：．A．won贏得，B．showed展示，C．a(chǎn)chieved獲得，D．earned掙得，他處理危機(jī)的方式讓人們高興，反過來，人們對他很尊敬．Show respect for sb．尊敬某人，選B
54：B考查動詞辨析：A．belonged屬于，B．a(chǎn)dapted適應(yīng)，C．a(chǎn)dopted采納，收養(yǎng)，D．a(chǎn)ppealed吸引，他和Gloria適應(yīng)零售業(yè)的改變，生意比以前更好，選B
55：D考查定語從句：在商業(yè)領(lǐng)域得失是很正常的其中Peterson就是一個例子．這里是定語從句，先行詞是examples，定語從句用of which引導(dǎo)，選D

點評 完型填空，解題時要抓住文章的脈絡(luò)，一定要讀懂全文，弄清文章要表達(dá)的思想，注意前后段落之間的關(guān)系．答題中，一定要認(rèn)真分析，注意選項與上下文的關(guān)系，與前后單詞的關(guān)系．對于一時沒有太大的把握的題可以放到最后再來完成，因為有時答案可以從下文內(nèi)容體現(xiàn)出來．答完后再通讀一篇文章，看看所選選項能不能是語句通順，語意連貫．

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：填空題

10．How to Get Motivated
You must think positively no matter how big a challenge is．If you think positively，you will feel better and will be able to overcome challenges in life．Furthermore，meet an optimistic person and you will notice how motivated he is towards life．（16）E On the other hand，negative thinking will only cause more depression in your life．
（17）D Don't be jealous of those who are successful around you．Instead，take inspiration from their success stories．This will make you motivated to get what you want．Moreover，you can also read books that are written by inspirational and successful personalities．
There is a famous quote that reads，"A healthy body leads to a healthy mind．"If your mind is healthy，you will think positively．（18）A Whether you are working out in the gym or going for a long walk，make sure that you incorporate an exercise plan in your daily routine．
（19）C Therefore，it is important to break your routine and do something different．Whether you go on a vacation or learn a new skill，it is important to break the monotony（單調(diào)）in your daily life．
Human beings are extraordinary individuals who are able to complete the hardest tasks and achieve the impossible．It is important to get out of your comfort zone and try something different．（20）F
A．Therefore，it is important to exercise regularly．
B．Keeping yourself motivated is not a difficult task．
C．You might lose motivation by doing the same things over and over again．
D．One of the best ways to motivate oneself is to get inspired by others'success．
E．Remember，positive thinking gives you motivation to achieve what you want．
F．By doing so you will get motivated and your attitudes towards life will be positive．
G．Do things that make you happy and find inspiration in possibly everything you see．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

9．Many drivers dream of the day when they can sit back while their car drives itself．While several companies are working hard to make （33）it a reality，self-driving cars still face many problems．
Google was one of the first （34）to get （get） into this industry．It （35）has been developing （develop） self-driving cars since 2009，and its new driverless car is called Firely．
But the driverless car is only a"fair weather friend"，the Daily Mail commented．
According to the MIT Technology Review，the current driverless cars can't react like a human driver．They can't drive in heavy rain or snow．
Chris Urmson，director of the Google car team，said that this is because the detection technology is not yet good enough to separate certain objects from weather conditions．In the cars'eyes，raindrops and snowflakes are the same as rocks，and cars stop for them．But if the manhole（下水道入口）ahead is left （36）uncovered （uncover），they drive over it without hesitation．
（37）Despite all these problems，Urmson said driverless cars will happen more quickly than people think．
But even at that time，driverless cars won't be truly"driverless．"
In the US，only when someone sits in the driver's seat （38）are driverless cars allowed on roads in certain states
European countries，Mexico，Chile，Brazil and Russian follow the United Nations Convention on Road Traffic．The convention used to say："Every driver （39）shall at all times be able to control his vehicle or to guide his animals．"A change was agreed in May，allowing a car to drive itself （40）as long as/on condition that a driver is in the car and able to take the wheel at any time．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

6．An"apple polisher"is one who gives gifts to win friendship or special treatment．It is not exactly a bribe（賄賂），but is close to it．
All sorts of people are apple polishers，including politicians and people in high offices-just about everybody．Oliver Cromwell，the great English leader，offered many gifts to win the support of George Fox and his party，but failed．
There are other phrases meaning the same thing as"apple-polishing"-"soft-soaping"or"buttering-up"．A gift is just one way to"soft-soap"somebody，or to"butter him up"．Another that is just as effective is flattery，giving someone high praise-telling him how good he looks，or how well he speaks，or how talented and wise he is．
Endless are the ways of flattery．Who does not love to hear it？Only an unusual man can resist the thrill of being told how wonderful he is．In truth，flattery is good medicine for most of us，who get so little of it．
We need it to be more sure of ourselves．It cannot hurt unless we get carried away by it．But if we just lap it up for its food value and nourishment，as a cat laps up milk，then we can still remain true to ourselves．
Sometimes，however，flattery will get you nothing from one who has had too much of it．A good example is the famous 12th century legend of King Canute of Denmark and England．The king got tired of listening to endless sickening flattery of his courtiers（朝臣）．They overpraised him to the skies，as a man of limitless might．
He decided to teach them a lesson．He took them to the seashore and sat down．Then he ordered the waves to stop coming in．The tide was too busy to listen to him．The king was satisfied．This might show his followers how weak his power was and how empty their flattery．

41．Which of the following activities has nothing to do with"apple-polishing"？D
A．A boy tells his girlfriend how pretty she looks．
B．An employee tells her boss how good he is at management．
C．A knight is said to be of limitless power by his followers．
D．A teacher praises her students for their talent and wisdom．
42．What does the writer want to prove with Cromwell's example？A
A．Everybody can be an apple-polisher．
B．Cromwell was not a good apple-polisher．
C．George Fox and his party were not apple-polishers．
D．There are people who don't like being apple-polished．
43．Which of the following statements about flattery is true according to the author？D
A．Too much flattery can carry us away．
B．Flattery is too empty to do people any good．
C．Flattery can get you nothing but excessive（過度的） pride．
D．Flattery is one of the ways to apple-polish people．
44．Why did King Canute of Denmark and England take his followers to the seashore？B
A．Because he was sick of his normal life．
B．Because he disliked being overpraised any more．
C．Because he wanted them to realize how wise he was．
D．Because he wanted them to see how weak he was as a king．
45．Who does the author think that flattery can do good to？B
A．Those who are politicians or in high offices．
B．Those who lack confidence．
C．Those who are really excellent．
D．Those who think highly of themselves．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

13．Only two countries in the advanced world provide no guarantee for paid leave from work to care for a newsborn child．Last spring one of the two，Australia，gave up the dubious distinction by establishing paid family leave starting in 2011．I wasn't surprised when this didn't make the news here in the United States-we're now the only wealthy country without such a policy．
The United States does have one explicit family policy，the Family and Medical Leave Act，passed in 1993．It entitles workers to as much as 12weeks'unpaid leave for care of a newsboy or dealing with a family medical problem．In spite of the modesty of the benefit，the Chamber of Commerce and other business groups fo：ight it bitter]y，describing it as"government-run personnel management"and a"dangerous precedent（先例）"．In fact，every step of the way，as Democratic leaders have tried to introduce work-family balance measures into the laxv，business groups have been strongly opposed．
As Yale law professor Anne Alcott argues，justifying parentai support depends on defining the Family as a social good that，ill some sense，society must pay for．In her book No Exit：What Parents Owe Their Children and What Society Owes Parents，she argues that parents are burdened in many ways in their lives：there is'"no exit"when it comes to children．"Society expects-and needs-parents to provide their children with continuity of care，meaning the intensive，intimate care that hum art beings need to develop their intellectual，emotional and moral capabilities，And society expects-and needs-parents to persist in their roles for 18years，or longer if needed．"
While most parents do this out of love，there are public punishments for not providing care．What parents do，in other words，is of deep concern to the state，for the obvious reason that caring for children is not only morally urgent but essential for the future of society．The state recognizes this in the large body of family laws that govern cl，ildren's welfare，yet parents receive little help in meeting the life-changing responsibilities society imposes．To classify parenting as a personal choice for which there is no collective responsibility is not merely to ignore the social benefits of good parenting； really，it is to steal those benefits because they accrue（不斷積累） to the whole of society as today's children become tomorrow's productive citizens，In fact，by some estimates，the value of parental investments in children，investments of time and money （including lost wages），is equal to 20-30% of entire domestic product．If these investments generate huge social benefits-as they clearly do-the benefits of providing more social support for the family should be that much clearer．

67．What do we learn about paid fancily leave from the first paragraph？A
A．America is now the only developed country without the policy．
B．Its meaning was clarified when it was established in Australia．
C．It came as a surprise when Australia adopted the policy．
D．It has now become a hot topic in the United States．
68．What is Professor Anne Alcott's argument for parental support？C
A．The cost of raising children in the U．S．has been growing．
B．The U．S．should keep up with other developed countries，
C．Good parenting benefits society．
D．Children need continuous care．
69．What does the author think of America's large body of family Yaws governing children's welfare？B
A．They fail to ensure children's healthy growth．
B．They fail to provide enough support for parents，
C．They emphasize parents'legal responsibilities．
D．They impose the care of children on parents，
70．Why does the author object to classifying parenting as a personal choice？C
A．It is regarded as a legal obligation．
B．It relies largely on social support．
C．It is basically a social undertaking．
D．It produces huge social benefits．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

3．There are many reasons why fast food has become so popular all over the world．Some think that fast food is such a hugely profitable business-and obviously people enjoy eating it，but the popularity of fast food has increased as our lifestyles have changed over the years．
The social landscape has changed immeasurably since fast food appeared in the second half of （lie 20th century．Back then，mums mostly stayed at home with the kids．Dads went to work，and they all got a healthy home-cooked meal at the end of the day．The lifestyle was slower．In this age，some mums still stay at home，but many are out at work，and some are single parents．If both parents are at work，they are often content just to throw something into the oven or the microwave，because after a hard and busy day，people don't have the time to create a meal-or at least they think they don't．
Fast food isn't just limited to eating out and ordering in-it'S now so easy to get a ready meal from the supermarket．You can pick up any kind of food you can think of at most supermarkets-Chinese，Italian，Japanese or Thai．There are healthy lifestyle options，but most people，unless they are on a specific diet，tend to be seduced（引誘）by the images they see on the packaging，and the description of the meal inside．
The proportion of single households has increased greatly since fast food was invented．While families might make an effort to eat together and eat fresh，home-cooked food，the single lifestyle doesn't often allow for this．Many people who live alone simply can't be bothered to make a big effort to cook for themselves．Some don't know how to．
It will take a major shift in lifestyle and cooking ability to lessen the hold that junk food has over the population and replace it with good home cooking．

68．According to the author，what's the most probable reason why fast food has become so popular？A
A．People's lifestyles have changed．
B．Fast food makes people's life easy and convenient．
C．Businessmen can make big profit from selling fast food．
D．People don，t have the time to create a meal after a hard and busy day at work．
69．What was the life like in the first half of the 20th century？D
A．Fast food was somewhere to be found． B．People knew a little about fast food．
C．Things were cheap but life was hard． D．Most family ate a mum-cooked meal at home．
70．What might be the author's attitude towards the future of"home-cooked food"？B
A．Negative． B．Optimistic． C．Uncertain． D．Not mentioned．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

10．The Internet can provide a wealth of educational resources for small children，if you know where to look．This article will offer some educational websites to small children．You may need to assist your children in navigating（導(dǎo)航） the pages until they understand where their favorite activities are．
Enchanted Learning
Enchanted learning is a great website for children，and I know several teachers who rely on it for materials for their classrooms．Most of the information is free，but for $20.00per year，you can purchase a membership that allows you to have access to the site without the advertising．The pages here are great．There are colored pages and worksheets for toddlers（學(xué)步兒童） and school-age children．They focus on learning language，science，animals，geography，astronomy，explorers，music，art and nursery rhymes．
Starfall
Starfall is another good educational website for small children．Teachers often use this website in classrooms．It emphasizes reading skills for early learners．The website is aimed at first grade level learners，but it has tools that can help all children from pre-K to second grade．The website has reading activities，worksheets to download，and a store where you can purchase educational materials for your children．
Sesame Street Workshop
Kids love Sesame Street，and it is always educational．This is one of the funniest websites online for children because it is very well animated and has great sound effects．The website has games and stories for small kids，and they can create letters at the post office and mail them to their favorite characters．
Sprout Online
Sprout has features on its television network，which are just for children．There are games，colored pages，recipes，music，videos，sign language activities and exercise videos for children．There are also online activities based on Sprout television shows．These include Roary the Race Car，the Wiggles，the Mighty Jungle and many others．
These are just a few of many educational websites for children．Small children love to use computers，so help them find some websites that contain fun and learning at the same time．

66．What's the purpose of the author in writing this passage？A
A．To introduce some educational websites to parents for their kids．
B．To let parents distinguish between good and bad websites．
C．To attract the readers to download some useful information．
D．To enrich  young children's spare time with some Internet games．
67．What's the difference between people who have memberships and those who don't？C
A．With a membership，you can get the information for free．
B．You can download materials you want for free with a membership．
C．With a membership，you can have access to the site without the ads．
D．You can look through more pages with a membership．
68．If you want to buy educational materials for your children，you should chooseB．
A．Enchanted Learning．
B．Starfall
C．Sesame Street Workshop．
D．Sprout Online．
69．Why does the Sesame Street Workshop have more fun than others？D
A．Because it has games and stories for young kids．
B．Because children can mail letters to their favorite characters．
C．Because it is always educational，and children love it．．
D．Because it has great sound effects and animation．
70．It can be learnt from the passage thatD．
A．Enchanted Learning has reading activities and worksheets to download．
B．Starfall is designed for learners from pre-K to second grade
C．the Wiggles and the MightyJungle are not based on television shows．
D．websites that involve joy and learning are beneficial to kids．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

7．Time spent in a bookshop can be most enjoyable，whether you are a booklover or merely go there to buy a book as a present．You may even have entered the shop just to find shelter from a sudden shower．
Whatever the reason，you can soon become totally unaware of your surroundings．The desire to pick up a book with an attractive dust-jacketis irresistible，although this method of selection ought not to be followed，as you might end up with a rather dull book．You soon become absorbed in some book or other，and usually it is only much later that you realize you have spent far too much time there and must dash off to keep some forgotten appointment-without buying a book，of course．
     This opportunity to escape the realities of everyday life is，I think，the main attraction of a bookshop．There are not many places where it is possible to do this．A music shop is very much like a bookshop．You can wander round such places to your heart's content．If it is a good shop，no assistant will approach you with the unavoidable greeting："Can I help you，sir？"You needn't buy anything you don't want．In a bookshop an assistant should remain in the background until you have finis hed browsing．Then，and only then，are his services necessary．Of course，you may want to find out where a particular sec tion is，but when he has led you there，the assistant should retire considerately and look as if he is not interested in se lling a single book．
     You have to be careful not to be attracted by the variety of books in a bookshop．It is very easy to enter the shop looking for a book on，say ancient coins and to come out carrying a copy of the latest bestselling novel and perhaps a book about brass-rubbing--something which had only slightly interested you up till then．This volume on the subject，however，happened to be so well illustrated and the part of the text you read proved so interesting that you just had to buy it．This sort of thing can be very dangerous．Apart from running up a huge account，you can waste a great deal of time wandering from section to section．
51．The underlined phrase"dust jacket"meansB．
A．a(chǎn) kind of clothes           
B．a(chǎn) paper cover of a book
C．a(chǎn) dusty book               
D．a(chǎn) title of a book
52．You may spend too much time in a bookshop becauseB．
A．the dust jackets are very attractive 
B．you start reading one of the books
C．it is raining outside    
D．you have to make sure you won't buy a dull book as a present
53．It can be learned from the text that an assistant should offe r you helpD．
A．a(chǎn)s soon as you have entered the shop  
B．just before you finish browsing
C．only when you have finished reading  
D．when he leads you to a particular section
54．The author implies that it is very easy to enter a bookshop and buyD．
A．a(chǎn) book on ancient coins             
B．a(chǎn) best-selling novel on brass-rubbing
C．a(chǎn) book that only vaguely interests you    
D．a(chǎn) book that unexpectedly fascinates you
55．The best title for this passage may beA．
A．The Attraction of Bookshops    
B．How to Spend Your Time
C．Bookshops and Their Assistants 
D．How to Select Books．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

8．If two scientists at Los Alamos National Laboratory are correct，people will still be driving gasoline powered cars 50years from now，giving out heat-trapping carbon dioxide（二氧化碳）into the atmosphere-and yet that carbon dioxide will not contribute to global warming．
In a proposal by two scientists，vehicle emissions （排放） would no longer contribute to global warming．The scientists，F(xiàn)．Jeffrey Martin and William L．Kubic Jr．，are proposing a concept，which they have named Green Freedom，for removing carbon dioxide from the air and turning it back into gasoline．
The idea is simple．Air would be blown over a liquid solution of potassium carbonate，which would absorb the carbon dioxide．The carbon dioxide would then be put to chemical reactions that would turn it into fuel（燃料）：gasoline or jet fuel．
This process could change carbon dioxide from an unwanted，climate-changing pollutant into a vast resource for renewable fuels．The cycle-equal amounts of carbon dioxide produced and removed-would mean that cars，trucks and airplanes using the synthetic （合成的） fuels would no longer be contributing to global warming．
Although they have not yet built a synthetic fuel factory，or even a small model，the scientists say it is all based on existing technology．"Everything in the concept has been built，is operating or has a close cousin that is operating．"Dr．Martin said．
The Los Alamos proposal does not go against any laws of physics，and other scientists who have independently suggested similar ideas．r．Martin said he and Dr．Kubic had worked out their concept in more detail than former proposals．
There is，however，a major fact that explains why no one has built a carbon-dioxide-to-gasoline factory：it requires a great deal of energy．
According to their analysis，their concept，which would cost about 5billiontobuild，couldproducegasolineatanoperatingcostof1.40a gallon and would turn economically practical when the price at the pump hits $4.60a gallon．
Other scientists said the Los Alamos proposal perhaps looked promising but could not evaluate it fully because the details has not been published．"It's definitely worth pursuing，"said Martin I．Hoffert，a professor of physics at New York University．"It's not that new an idea．It has a couple of pieces to it that are interesting．"
58．What is the concept of Green Freedom？C
A．Removing the emission of carbon dioxide．
B．Reducing the carbon dioxide produced by car driving．
C．Recycling the carbon dioxide into gasoline．
D．Reserving the carbon dioxide for global warming．
59．What is the value of the scientists'proposal？C
A．It increases the productivity of a fuel factory．
B．It decreases the cost of producing gasoline．
C．It reduces the pollution caused by car driving．
D．It promotes a new idea of environmental protection．
60．The underlined part"has a close cousin that is operating"probably means the technology in the   conceptD．
A．has been popular for so long             
B．has been ignored by many people
C．is not appropriate for practice          
D．will be put into practice in the near future 
61．What is the biggest challenge in realizing the concept Green Freedom？B
A．There is no theoretical basis．
B．It is not economically practical．
C．There is no solution to some technical problems．
D．Only a few scientists support the idea．

查看答案和解析>>

同步練習(xí)冊答案