If two scientists at Los Alamos National Laboratory are correct, people will sti
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If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline-powered cars 50 years from now, giving out heat-trapping carbon dioxide 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. 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 (溶液) 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: 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. Dr. Martin said he and Dr. Kubic had worked out their concept in more detail than previous 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 $5 billion to build, could produce gasoline at an operating cost of $1.40 a gallon and would turn economically practical when the price at the pump hits $4.60 a gallon. Other scientists said the Los Alamos proposal perhaps looked promising but could not evaluate it fully because the details had 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.” 67. What is the idea of the project being discussed in the article? A. Recycling the carbon dioxide from cars back into gasoline. B. Create a new gasoline that gives off very little carbon dioxide. C. Using a special liquid solution to absorb carbon dioxide from cars. D. Build synthetic fuel factories to remove carbon dioxide from the air. 68. What’s the name given to the new concept? A. Synthetic Fuel. B. Green Freedom. C. Renewable Fuel. D. Carbon-dioxide-to-gasoline Factory. 69. Which of the following is NOT one of the benefits of this new concept as suggested in the article? A. Reduction of global warming. B. Cheaper gasoline for cars. C. Longer life of cars. C. Less pollution of the atmosphere. 70. What’s the biggest problem in realizing the concept according to the report? A. Shortage of starting funds. B. Immature technology involved. C. All previous similar attempts have failed. D. The use of too much energy in running the fuel factory. |
答案
ABCD |
解析
67. 第二段for removing carbon dioxide from the air and turning it back into gasoline. 67. 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. 68. C 项没有提到 69. 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. |
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Recreational pursuits() can be a part of everyday life, 365 days a year in Vancouver. We provide and maintain playgrounds, sports fields, ice rinks, fitness centers, indoor and outdoor pools, beaches, tennis courts, golf courses, skateboard parks and numerous other ways for any and all to participate. Knowledgeable staff work hard to provide leisure() activities suited to people of every age, culture and ability. Recreation also means our 23 community() centers, serving all ages and supporting awide range of recreational, social and cultural pursuits. Programs include aerobics arts and many more. Community centers are cooperatively operated with people living nearby, making for good partnerships between city government and its residents.
Community Arts and Culture Benefits of Recreation Community Centres Recreation Programs Recreation for All Access Services Adapted Programs Childcare Day Camps Get out! Youth Initiative Leisure Access Card program LAC) Seniors Programs and Services Youth Activities and Services Forms and Schedules Application Forms for Picnics and Events Leisure Guide 2008
| Activities Basketball Beaches Fitness Centre Football Fields Get up & Go! Golf/pitch & Putt Horseshoes Pitches Ice Rinks Lacrosse Lawn Bowling Picnic Sites Playgrounds Playing Fields Racquet/Squash Courts Rugby Fields Swimming Pools Tennis Courts Volleyball Wading Pools & Water/Spray
| 1. This advertisement is intended for ____. A. people living in nearby cities B. 23 community centers C. residents of Vancouver D. the government of Vancouver 2. From Leisure Guide 2008, you may probably find information about ____. A. arts and culture B. recreation programs C. plans and timetable of different activities D. partnerships between city government and its residents 3. You will probably click _____ to help your grandparents find some leisure activities. A. Seniors Programs and Services B. Football Fields C. Rugby Fields D. Adapted Programs |
From the earlier time it was well ___1___to the Peruvians that when a cut ___2____made in the thick skin of a ___3____tree, a white liquid like milk came ___4___. From this fluid (流动的) a sticky ___5_____of rubber might be made. This rubber is ___6____and wax-like when warm so that it is ___7_____to give any form. The Peruvians ___8____the discovery that it is very good for ___9____out water. Then in the early ___10____of the century they made overshoes to ___11___their feet dry. Then a certain Mr Mackintosh ___12_____coats of cloth which were ___13____with rubber. Today Mackintosh raincoats are still ___14_____after him. But these first rubber shoes ___15______raincoats were unpleasantly soft and sticky in ___16___. They were also stiff and very ___17____in winter. They were like wax(蜡) although they ___18____a bit stronger. But the rubber ___19___use today has been improved. It is ___20____sticky but soft and elastic(弹性的) and strong enough for any season. 1. A. talked B. heard C. seen D. known 2. A. has B. was C. may D. will 3. A. rubber B. apple C. orange D. oak 4. A. from B. through C. out D. up 5. A. raincoat B. shoes C. border D. mass 6. A. hard B. fast C. stubborn D. soft 7. A. important B. impossible C. possible D. uncertain 8. A. made B. found C. wrote D. neglected 9. A. finding B. keeping C. making D. pouring 10. A. kind B. part C. sort D. halves 11. A. clean B. clear C. keep D. prevent 12. A. made B. found C. appeared D. gave 13. A. full B. like C. lined D. applied 14. A. looked B. named C. made D. searched 15. A. or B. and C. with D. but 16. A. today B. summer C. winter D. rain 17. A. soft B. sticky C. elastic D. cold 18. A. felt B. made C. needed D. produced 19. A. Mr Mackintosh B. the Peruvians C. we D. is 20. A. also B. always C. neither D. not |
More and more students want to study in“hot”majors. 1 a result, many students want to 2 their interests and study in these 3 such as foreign languages, international business and law, etc. Fewer and fewer students choose scientific majors, 4 maths, physics and biology, and art majors, 5 history, Chinese and philosophy. 6 students can study in these“hot”majors, because the number of these“hot”majors 7 limited. If one 8 interest in his work or study, 9 can he do well? I 10 this from one of my classmates.He is 11 the countryside.His parents are farmers.Though he 12 biology, he chose“international business”.He 13 to live a life which is different 14 of his parents. In the end, he found he 15 in doing business.He found all the subjects to be 16 . 17 this wouldn"t have happened if he had chosen his major according to his own interests. Choosing a major in university 18 decide one"s whole life.Majors 19 are not“hot”today may become the“hot”major of tomorrow. Choosing your major according to your own 20 is the bestway to succeed. 1.A.Being B.For C.Having D.As 2.A.give up B.appear C.give D.master 3.A.place B.room C.areas D.space 4.A.for example B.much as C.and so on D.as a result 5.A.even B.like C.just D.or 6.A.Only a few B.Quite a few C.Perhaps D.Many 7.A.is B.are C.would be D.have been 8.A.had no B.had C.has no D.has 9.A.why B.and what C.how D.and how 10.A.suggested B.guessed C.searched D.learned 11.A.out of B.off C.in D.from 12.A.studied B.likes C.learns D.succeeds to study 13.A.wants B.doesn’t want C.enjoys D.doesn’t like 14.A.from which B.from that C.for which D.for that 15.A.was interested B.was clever C.was not interested D.was not clever 16.A.lovely B.rare C.obvious D.tiresome 17.A.SoB.Then C.Just then D.Maybe 18.A.can B.does not C.probably D.perhaps not to 19.A.on which B.in which C.which D.—— 20.A.interests B.experience C.mind D.heartCloze |
Do you know the meaning of the word “relationship”? Here is an easy way of understanding __1__. Whenever two people come together, even for a brief moment, they __2__ looks, feelings, thoughts, ideas, and energy. Their relationship is __3__ they interact (相互作用,相互影响) with each other. Everything __4__ happens in the world happens through relationships. We human beings need to love and __5__, and this will come from our relationship with others. Accordingly, anyone who wishes to love and be loved will want to __6__ lasting relationships. Here are a few tips to help us __7__ long-term relationships. First, know our steps. The relationship between two people is like the art of __8__. Before we can dance with a partner, we need to be able to dance __9__. We need to feel the rhythm of the music, hear how it inspires us to move and learn our unique style of __10__ and expression. Second, __11__. As the key building block for enduring relationships, trust is a bond that develops __12__ as two persons get to know each other and experience safety in __13__ their hearts. Trust develops __14__ we respect each other"s needs __15__ develop a history of common experience and caring. Third, be intimate (亲密的;密切的). __16__ intimacy is often limited to the sexual bond, we can be intimate with many people __17__ sexuality. That is, by relating heart to heart. We need to be seen and known by __18__. In this way, intimacy enables us to thrive (兴旺,繁荣) and grow. Lastly, treat relationship as an organism (有机体;生物(体);微生物). A new relationship is like an embryo (胚胎)that __19__ time, care and attention to grow into whatever may develop gradually. In our proper relationship with others, we will be known and seen for who we are, and love will come out of the seeing and the __55__. 1. A. that B. one C. this D. it 2. A. exchange B. found C. transport D. charge 3. A. what B. why C. how D. where 4. A. how B. that C. which D. what 5. A. be loved B. to wish C. to expect D. be hoped 6. A. form B. develop C. make D. establish 7. A. invent B. command C. create D. devote 8. A. singing B. dancing C. running D. caring 9. A. by ourselves B. by company C. to music D. after rhythm 10. A. character B. opinion C. movement D. action 11. A. honesty B. trust C. principle D. generosity 12. A. suddenly B. gradually C. accordingly D. surprisingly 13. A. closing B. shutting C. resting D. opening 14. A. while B. as C. when D. with 15. A. and B. but C. consequently D. or 16. A. As B. But C. While D. However 17. A. without B. given C. with D. supposing 18. A. others B. no one C. ourselves D. another person 19. A. recognizes B. requires C. upsets D. bursts |
Is the world really going mad? 1._____day I was sittng in a restaurant 2._____ a quick drink and a talk with a few friends when it suddenly 3._____ me that almost everyone in the restaurant was smoking. It wasn’t long 4._____ the whole room was 5._____ with smoke. I asked with an apology for 6._____ to open a window to stop myself 7._____! Nowadays air pollution is something that hardly question any more. However, I still can’t walk down the street in any of the big cities without 8._____ that people are 9._____ the air pollution. It is time for the government departments of the world to introduce emission(废气排放) controls on all cars and 10._____ the public transport system(公共交通体系) to encourage people to 11._____ their cars at home. A friend of mine takes flying lesson each morning and it really makes him 12._____ when he climbs above the smog layer(烟雾) and looks down 13._____ it and thinks: “I’m breathing that!” This kind of 14._____ results from the bad management of resources. Waste things can 15._____ should, be treated properly. House building, road 16._____, and industrial development are all earthmoving(or earth-reducing) operations and can change the balances of 17._____ created over millions of years. I would like to 18._____serious studies done on all these main works before they are built. Also, there should be 19._____ national parks set up to keep the most beautiful parts of our countries in their natural 20._____. 小题1:.A.The other | B.Another | C.Every | D.Each | 小题2:.A.asking for | B.drinking | C.having | D.buying | 小题3:.A.seemed | B.struck | C.sank | D.showed | 小题4:.A.ago | B.after | C.before | D.now | 小题5:.A.full | B.filled | C.crowed | D.parked | 小题6:.A.promise | B.help | C.suggestion | D.permission | 小题7:.A.standing | B.sitting | C.talking | D.dying | 小题8:.A.thinking | B.persuading | C.deciding | D.learning | 小题9:.A.suffering | B.dying | C.walking | D.standing | 小题10:.A.increase | B.reduce | C.improve | D.raise | 小题11:.A.wash | B.repai | C.drive | D.leave | 小题12:.A.sick | B.tired | C.foolish | D.excited | 小题13:.小题14:.A.discussion | B.question | C.pollution | D.operation | 小题15:.小题16:.A.work | B.construction | C.building | D.setting |
小题17: | A.life | B.mind | C.human being | D.plants |
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小题20: | A.situation | B.states | C.soils | D.place |
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