首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Improve the batteries of electric cars. B、Increase the number of electric cars. C、Design a new device for electric cars. D、Loo
A、Improve the batteries of electric cars. B、Increase the number of electric cars. C、Design a new device for electric cars. D、Loo
admin
2016-04-26
91
问题
Are electric cars the way of the future? Automobile manufactures are under pressure to develop cars that do not pollute. One powerful motive is a California law requiring that by the year 2020 ten percent of new car sells in the state be so called zero-emission vehicles. These cars must put no pollutants whatsoever into the atmosphere.
California is a huge market for the automobile companies, so they are working hard to meet these standards.[23]So far the electric car seems to be the best alternative. So the big advantage of electric cars is that they don’t pollute. However they will be in competition with gas-powered cars and that’s where the weaknesses come out.[24]The big problem is that the batteries that power electric cars weigh a lot rela-tive to the amount of power they deliver. For instance, in one prototype electric car, the batteries weighed 400 kilograms. And they provide enough energy to go 250 kilometers before recharging, which takes eight hours. Compare that to a moderately fuel-efficient conventional car, it can go 600 to 700 kilometers on a tank of gas and refilling takes just minutes. If there are other drains on an electric car’s batteries besides the motor, headlights, air-conditioning or a heater, its already limited range will be significantly reduced.[25]So automobile engineers are trying to make more powerful batteries that would increase the cars’ range and make them more attractive to buyers.
23. Why does the electric car seem to be the best alternative so far?
24. What is the big problem with an electric car?
25. What are the automobile engineers trying to do?
选项
A、Improve the batteries of electric cars.
B、Increase the number of electric cars.
C、Design a new device for electric cars.
D、Look for new ways to improve safety.
答案
A
解析
短文结尾处说,汽车工程师们正试图开发更强大的电池以提升汽车的行驶里程,从而使电动汽车更受消费者欢迎,故A正确。
转载请注明原文地址:https://kaotiyun.com/show/7ye7777K
0
大学英语四级
相关试题推荐
A、Gotothelibrary.B、Paythemoney.C、Gothroughregistration.D、Getachecklist-releasecard.C由女士的话可知,由于男士在图书馆的checklist中,只有
A、Nationalconflict.B、Agriculturalproblems.C、Populationdecrease.D、Economicproblems.D短文提到了缺水会产生的问题,其中谈到影响到发展中国家改善经济的能力,即缺水
Lookingtoimproveyourlanguageskills,butdon’thavethetimetogooverseastoattendschool?Moreandmoreuniversitiesaro
Forthispart,youareallowed30minutestowriteashortessayonthetopicInternetSlang.Youshouldwriteatleast120word
College-boundAmericanhighschoolstudentsusuallyhavesomecombinationofparents,teachers,guidancecounselors,orpeersto
Therearethreekindsofgoals:short-term,medium-rangeandlong-termgoals.Short-rangegoalsarethosethatusuallydealwith
TheArtofFriendshipA)OneeveningafewyearsagoIfoundmyselfinananxiety.Nothingwasreallywrong—myfamilyandIwere
Differentthingsusuallystandfordifferentfeelings.Red,forexample,isthecoloroffire,heat,bloodandlife.Peoplesay
Manstillhasalottolearnaboutthemostpowerfulandcomplexpartofhisbody—thebrain.Inancienttimesmendidnott
Frenchfries,washeddownwithapintofsoda,areafavoritepartoffast-foodlunchesanddinnersformillionsofAmericanyou
随机试题
界线
A.脑干网状结构B.视前区-下丘脑前部C.下丘脑视交叉上核D.下丘脑生物节律的控制中心多位于
A.术后出血B.伤口感染C.伤口裂开D.腰麻后头痛E.硬膜外麻醉的全脊麻易发生于术后1周的是
当承包人提出索赔要求后,监理工程师无权就()作出决定。
财政补贴应主要用于()。
导游带领旅游团泡温泉时,应提醒游客()。
人民警察内务建设的基本要求是培养()的优良警风。
不属于春秋时期制定成文法的活动是()。
结合材料回答问题:加强和创新社会治理,非常重要的一点就是推动社会治理重心下移。打赢疫情防控阻击战,更需要将防控工作落实到单位社区、居住社区、小区、院落、居民楼、每一个有人群的空间,直到每一户、每个人。在这次疫情防控中,很多地方都把干部派到社区、小
WherewasThorpe’sathletictalentdiscovered?
最新回复
(
0
)