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
35
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
Forthispart,youareallowed30minutestowriteashortessayentitledOnTeacher-studentRelationshipfollowingtheoutline
A、Thosewhoseldomsleep.B、Thosewhoseldomdrink.C、Thosewhooftensmoke.D、Thosewhoofteneatjunkfood.B短文开头提到,那些不抽烟、不喝酒或
CreativeCapitalismA)ThemainbuildingonDisney’sstudiolothassevenhugereplicas(复制品)ofSnowWhite’sdwarfsholdingupits
A、Workinghardmayprepareyourselfopportunity.B、Successalwaysdependsonopportunity.C、Opportunitycanreplacehardworkin
Theownershipofpetsbringsavarietyofbenefitsthattheuninitiatedwouldneverbelieve.Foreverytaleofshreddedcushion,
A、Wherethecountriesare.B、Howtomakeatravelaroundtheworld.C、Whathetoldaboutisquitetrue.D、Howtofindtheblack
A、Toboomupreal-estatemarket.B、Tolowerunemploymentrate.C、Tofinancecarindustry.D、Toofferfoodtomorepeople.B本题询问美
A、Thecaptain.B、Thecommunicationsofficer.C、Thedoctor.D、Thefrogpeople.C父女俩只对那个医生有一致的评价,女儿说“宇宙飞船的医生很了不起……”之后,父亲肯定她的说法:“非常
A、Thenumberofseniorcitizensisincreasingrapidly.B、Theproblemofseniorcitizenbecomesmoreserious.C、Seniorcitizensa
A、Toshowhowhappytheywere.B、Todriveawaytheevilspirits.C、Towarnthethievesandrobbers.D、Toselltheirdrumsandst
随机试题
加强党的思想政治建设的最重要一环是()
患者,男,55岁。慢性肾炎病史7年。现纳呆,恶心,口中黏腻,身重困倦,浮肿尿少,精神萎靡,舌苔腻,脉沉缓。其方剂为
小儿头形过小的原因主要是
在五脏中,脾肾两脏与阳虚内寒产生关系最为密切。()
应用网格制图方法,将研究区域划定一张固定大小的网格,用网格内面积()的地块地类表示网格的地类,形成市区土地利用结构数据。
集合资产管理合同由()共同签署。
一般存款账户只能用于结算及现金缴存,不得办理现金支取。()
在windows中,关于文件复制和移动的操作,下列说法正确的是()。
“不折腾”其实是对一个常识的______:一个正常的社会,必须______致力于增进以民主和民生为双轴的全民核心利益,必须______改善包括物质生活、精神生活、政治生活在内的公共生活,必须在安定和谐中让民众免于匮乏与恐惧。填入划横线部分最恰当的一
TheannualconsumptionofCoco-Colapercapitaintheregionalmarketsmentionedinthepassageranksinthefollowingorder.
最新回复
(
0
)