高三英语练习3

高三英语练习3一．完形填空（共20小题；每小题1分，满分20分）请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项。

When your friend yawns(打哈欠) as you chat, don’t be angry. For, far from being a sign of boredom, yawning may signal empathy (同感).Scientists believe that contagious(容易感染他人的) yawning —yawning 1 someone else does —is a sign of being very 2 in the first person’s thoughts and feelings.This is the theory of Italian researchers who 3 more than 100 men and women from four continents as they went to work, ate in restaurants and sat in waiting room.When one of the 4 yawned, the researchers noted whether anyone within 10 feet yawned within the next three 5 .Their results showed that race and 6 had no effect on whether the uncontrollable urge to yawn was 7 . But how well the two people knew each other did.A reciprocal(相互的) yawn was most 8 to occur among family members, then 9 , then acquaintances(认识的人). The phenomenon was 10 common among strangers, the journal PLOS ONE reports.The University of Pisa team concluded that contagious yawning is driven by how emotionally 11 we are to someone and so how likely we are to 12 the same feeling with them.They say there are other reasons to link yawning with empathy. 13 , we start to “catch” yawns from the age of four or five, around the time when we 14 the ability to identify each other's emotions 15 .Studies also show that those easily 16 by contagious yawning are better at knowing 17 others are thinking about from their faces.Most animals, including snakes and fish, yawn, 18 it is only contagious in humans and chimps(猩猩) and, according to a recent study, dogs.The researchers, from the University of London’s Birbeck College, put 29 19 in a room with a yawning man and found that 21, or 72%, also started to yawn. They said the skill may allow the pet to build stronger 20 with their owners.1. A. when B. before C. after D. while2. A. absorbed B. interested C. concerned D. disappointed3. A. saw B. observed C noticed D. watched4. A. workers B. customers C. researchers D. volunteers5. A. days B. weeks C. hours D. minutes6. A. sex B. age C. profession D. health7. A. passed by B. passed on C. passed away D. passed through8. A. likely B. possible C. normal D. probable9. A. classmates B. friends C. teachers D. strangers10. A. most B. least C. less D. more11. A. close B. different C. distant D. fond12. A. mix B. hurt C. lack D. share13. A. That is B. For example C. In a word D. To begin with14. A. develop B. lose C. control D. need15. A. exactly B. quickly C. particularly D. properly16. A. disturbed B. influenced C. caught D. interrupted17. A. who B. which C. how D. what18. A. but B. and C. so D. otherwise19. A. snakes B. fish C. dogs D. cats20. A. beliefs B. bonds C. basis D. bodies二：阅读理解（共9小题；每小题2分，满分18分）请认真阅读下列短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。

AFuel Cell Technology for CarsFill her up with hydrogen? That’s what some California motoristsmay be saying soon, as car makers try to speed up production of zeroemission(零排放) cars to meet state requirements in the near future.Beneath the skin of this ordinary looking Hondas FCX ConceptVehicle sits an electro-chemical reactor: a hand built, astronomicallyexpensive power plant known as a fuel cell. It’s expected to be runningordinary family cars on California’s roads within three years.So what exactly is a fuel cell, anyway? Why are governments, private businesses and academic institutions cooperating to develop and produce them? A fuel cell, very simply described, is a power generator, making electricity through the combination of hydrogen and oxygen. Fuel cells generate electrical power quietly and efficiently, without pollution. Unlike power sources that use fossil fuels, the only by-products from an operating fuel cell are heat and water. To be more technical about it, a hydrogen atom with its one electron(电子), attempts to pass through a fuel cell membrane(膜) to unite with an oxygen atom. The membrane allows only the hydrogen proton(质子) to pass through, forcing its electron to run around the membrane to catch up with the proton on the other side. This creates electricity, water, and heat, but no exhaust emissions.If the fuel cell is powered with pure hydrogen, it has the potential to be up to 80-percent efficient, That is, it turns 80 percent of the energy content of the hydrogen into electrical energy. However, we still need to turn the electrical energy into mechanical work. This is accomplished by the electric motor. A reasonable number for the efficiency of the motor is about 80 percent. So we have 80-percent efficiency in generating electricity, and 80-percent efficiency turning it into mechanical power. That gives an overall efficiency of about 64 percent. Honda’s FCX concept vehicle reportedly has 60-percent energy efficiency, which is twice or even three times more efficient than usual cars.But in spite of all the advantages described above, experts say, “We still have technical challenges getting this extremely complex system to work properly, the way customers expect it to work. There are challenges in using new fuels, and providing the new fuel basic facilities. And before fuel cell vehicles hit the road, there will have to be a network of hydrogen stations that will allow drivers to fill up with the flammable gas, under 36-hundred pounds of pressure.”21. What can be inferred from California’s “zero emissions policy”?A. New cars with fuel cell technology will surely become much cheaper.B. By carrying out the policy, traffic will not be so busy as it is now.C. The quality of life in California will improve once this policy is in effect.D. With facilities of new kinds, more local employment will be created.22. What does the phrase “power plant” refer to?A. A power device generating electricity.B. A power station providing electricity.C. A power component consuming electricity.D. A power engine using electricity.23. One of the reasons why fuel cell powered vehicles are superior is that _________.A. they give out almost no water or heatB. they run faster and more smoothlyC. they give out almost no noiseD. they turn 64% of the energy into electricity24. What does the author want to tell us in the last paragraph?A. Customers will not think it a good idea to develop fuel cell technology.B. It is still not very easy to speed up production of zero emission cars.C. We can't ignore the financial problems to build a network of hydrogen stations.D. We still have much difficulty turning all the chains of the business into reality.BAttitudes toward new technologies often along generational lines. That is, generally, younger people tend to outnumber older people on the front end of a technological shift.It is not always the case, though. When you look at attitudes toward driverless cars, there doesn't seem to be a clear generational divide. The public overall is split on whether they'd like to use a driverless car. In a study last year, of all people surveyed, 48 percent said they wanted to ride in one, while 50 percent did not.The face that attitudes toward self-driving cars appear to be so steady across generations suggests how transformative the shift to driverless cars could be. Not everyone wants a driverless car now-and no one can get one yet-but among those who are open to them, every age group is similarly engaged.Actually, this isn't surprising. Whereas older generations are sometime reluctant to adopt new technologies, driverless cars promise real value to these age groups in particular. Older adults, especially those with limited mobility or difficulty driving on their own, are one of the classic useeases for driverless cars.This is especially interesting when you consider that younger people are generally more interested in travel-related technologies than older ones.When it comes to driverless cars, differences in attitude are more pronounced based on factors not related to age. College graduates, for example, are particularly interested in driverless cars compared with those who have less education, 59 percent of college graduates said they would like to use a driverless car compared with 38 percent of those with a high-school diploma or less.Where a person lives matters, too. More people who lives in cities and suburbs said they wanted to try driverless cars than those who lived in rural areas.While there's reason to believe that interest in self-driving cars is going up across the board, a person's age will have little to do with how self-driving cars can be becoming mainstream. Once driverless cares are actually available for safe, the early adopters will be the people who can afford to buy them.25.What happens when a new technology emerges?A.It further widens the gap between the old and the young.B.It often leads to innovations in other related fields.C.It contribute greatly to the advance of society as a whole.D.It usually draws different reactions from different age groups.26.What does the author say about the driverless car?A.It does not seem to create a generational divide.B.It will not necessarily reduce road accidents.C.It may start a revolution in the car industry.D.It has given rise to unrealistic expectations.27.Why does the driverless car appeal to some old people?A.It saves their energy.B.It helps with their mobility.C.It adds to the safety of their travel.D.It stirs up their interest in life.28.What is likely to affect one's attitude toward the driverless car?A.The location of their residence.B.The amount of their special interestC.The amount of training they received.D.The length of their driving experience.29.Who are likely to be the first to buy the driverless car?A.The senior.B.The educated.C.The weaIthy.D.The tech fans.三．任务型阅读(共10小题；每小题1分，满分10分)请认真阅读下面短文，并根据所读内容在文章后表格中的空格里填上一个最恰当的词。