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
2017-12-08
32
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. 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 relative 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/cta7777K
0
大学英语四级
相关试题推荐
ThingsYouCan’tSayinCanadaA)Attackingoursacredcows(thingsorpeoplethatcannotbecriticized)mayturnyouintoo
Likeaneedleclimbingupabathroomscale,thenumberkeepsrising.In1991,15%ofAmericanswereobese(肥胖的);by1999,thatp
Forthispart,youareallowed30minutestowriteashortessayentitledWillOnlineTranslationToolsEliminateForeignLangua
Forthispart,youareallowed30minutestowriteashortessayentitledOnTeacher-studentRelationshipfollowingtheoutline
A、ItisorganizedbyScotland’sgovernment.B、Itstrengthensfriendshipsamongnations..C、Itmaybethegreatestculturalfesti
A、WaitforMr.White’scall.B、Makeanothercalllater.C、Paythemanageravisit.D、Speakinaloudervoice.B男士打电话找经理White先生。女
A、Offeringservicestohelppeoplestopsmoking.B、Raisingtaxes.C、Warningpeopleaboutthedangersoftobacco.D、Enforcingban
A、Improvethebatteriesofelectriccars.B、Increasethenumberofelectriccars.C、Designanewdeviceforelectriccars.D、Loo
Forthispart,youareallowed30minutestowriteashortessayentitledDevelopingElectricCars.Youshouldwriteatleast12
A、Useofcomputersinbanks.B、Conveniencesbroughtaboutbycomputersinbusiness.C、Significanceofautomationincommerciale
随机试题
轻钢龙骨主要分为吊顶龙骨和墙体龙骨两大类,其中吊顶龙骨包括()。
产地检验检疫机构对出境货物检验检疫合格后,通过电子传单将相关信息传到口岸检验检疫机构,并出具()供发货人或代理人到口岸检验检疫机构办理换证手续。
我国海关将从事加工贸易的企业分为四类,与A类企业条件不符的是()。
关于影响股票投资价值的因素,以下说法错误的是()。
Thedooropenedand______,thevictimofatrafficaccident.
2014年,全国粮食播种面积112738.3千公顷,比2013年增加782.7千公顷。其中谷物播种面积94622.8千公顷(141934.1万亩),比2013年增加854.1千公顷,增长0.9%,全国粮食总产量60709.9万吨,比2013年增长0.9%。
结构化分析方法(SA)是一种预先严格定义需求的方法,强调分析对象的(39),其指导思想是(40)。
Whydidmanhavetotrackhistargetatacloserangewhenusingashortbow?
CustomsofficersataLondonairportyesterdayfound$500,000worthofdrugswhichwerebeingsmuggled(走私)intoBritaininboxes
Honestyisavirtue,andtellingalieismorallywrong.Buthowcanyou【C1】______ifsomeone’slying?Theansweris,they’repr
最新回复
(
0
)