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、Its battery is not powerful enough. B、Its battery is of enormous size. C、It costs too much money. D、It breaks down easily. A短文
A、Its battery is not powerful enough. B、Its battery is of enormous size. C、It costs too much money. D、It breaks down easily. A短文
admin
2016-04-26
50
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、Its battery is not powerful enough.
B、Its battery is of enormous size.
C、It costs too much money.
D、It breaks down easily.
答案
A
解析
短文提到,电动汽车一个大问题在于,相对于其所能供应的龟能而言,电池的重量偏高。言外之意是,电池的供电能力不够强大,故A正确。
转载请注明原文地址:https://kaotiyun.com/show/zfe7777K
0
大学英语四级
相关试题推荐
Sincewearesocialbeings,thequalityofourlivesdependsinlargemeasureonourinterpersonal(人与人之间的)relationships.Onestr
A、Findalargerroom.B、Selltheoldtable.C、Buytwoarmchairs.D、Rearrangesomefurniture.D女士说,他们这个房间需要多一张扶手椅,但问题在于放哪儿。男士提议,把
Forthispart,youareallowed30minutestowriteashortessay.Youshouldstartyouressaywithabriefaccountofstudent’s
A、Seeadoctor.B、Stayinbedforafewdays.C、Gettreatmentinabetterhospital.D、Makeaphonecalltothedoctor.A女士提到,Car
College-boundAmericanhighschoolstudentsusuallyhavesomecombinationofparents,teachers,guidancecounselors,orpeersto
Differentthingsusuallystandfordifferentfeelings.Red,forexample,isthecoloroffire,heat,bloodandlife.Peoplesay
“北京的颐和园、河北省承德的避暑山庄、江苏省苏州市的拙政园(theHumbleAdministrator’sGarden)和留园(theGardentoLingerIn)”并称“中国四大名园”。前两座是北方皇家园林的代表,后两座是中国南方水乡私
Doyoufindgettingupinthemorningsodifficultthatit’spainful?Thismightbecalledlaziness,butDr.Kleitmanhasanew
Businessesarestructuredindifferentwaystomeetdifferentneeds.The【B1】______formofbusinessiscalledanindividualorso
Businessesarestructuredindifferentwaystomeetdifferentneeds.The【B1】______formofbusinessiscalledanindividualorso
随机试题
A、Theydon’twanttouseupalltheirlifesavings.B、Theyfeartheywillregretitafterwards.C、Theywouldliketospendmore
右侧这个标志提醒注意左侧有落石危险。
1993年八届人大通过的《宪法修正案》将________任期由3年改为5年。()
在数据库的E-R概念模型中,实体集之间只能存在“一对一”或“一对多”联系。()
下列对复制和转录异同点的比较中正确的是
绞窄性肠梗阻最易发生的酸碱失衡类型是
已知某项目现金流量表如下所示,则该项目静态投资回收期为()年。
施工方所编制的施工企业的施工生产计划,属于( )的范畴。
每个报表最多包含节的种数为()。
IliketoplaythepianobutIcan’tplayitwell.______Sophie.
最新回复
(
0
)