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
2018-09-15
26
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/v847777K
0
大学英语四级
相关试题推荐
A、Districtmanagers.B、Regularcustomers.C、Salesdirectors.D、Seniorclerks.A短文一开始就提到AlexGordon期待与公司区域经理的第一次会议。因此答案为A。B“常客”、D
A、Aninformationcardofarestaurant.B、Hisownbusinesscard.C、Mr.Cooper’sbusinesscard.D、Anoteofwhattodo.A男士说,他还给了女
A、Aregularlicensewillcostmuchmoremoney.B、Aregularlicensehasashortereffectiveperiod.C、Afive-yearlicenseismuch
Forthispart,youareallowed30minutestowriteanessaybasedonthepicturebelow.Youshouldstartyouressaywithabrief
A、Itsbatteryisnotpowerfulenough.B、Itsbatteryisofenormoussize.C、Itcoststoomuchmoney.D、Itbreaksdowneasily.A短文
A、Eatingfruits.B、Makingfriends.C、Drinkingalcohol.D、Doingexercise.D短文最后提到,其他研究已经表明“锻炼”已被证明能够避开和治疗焦虑和抑郁。故选D。
WhenMomandDadGrowOldA)Theprospectoftalkingtoincreasinglyfragileparentsabouttheirfuturecanbe"oneofthemostd
ALogger’sLamentA)Myfatherwasalogger.Myhusbandisalogger.Mysonswillnotbeloggers.Loggersareanendangeredspeci
A、Nationwide.B、Overseas.C、Inlargecities.D、Inremotetowns.C细节推断题。由particularlyinbigcityhavecomplainedaboutdroppedc
A、Toshowhowhappytheywere.B、Todriveawaytheevilspirits.C、Towarnthethievesandrobbers.D、Toselltheirdrumsandst
随机试题
邓小平南方谈话指出,判断改革的标准是()
要区别甾体皂苷的基本碳架是螺旋甾烷,还是异螺旋甾烷,可采用的方法是
以下护理行为,不正确的是
在大型建设工程项目中,信息交流的问题导致工程变更和工程实施的错误约占工程总成本的()。
可行性研究主要解决( )等问题。
资产负债表中的各报表项目()。
在同一省管辖范围内,纳税人跨地区使用土地,其纳税地点是()。
国务院()主管部门负责全国博物馆监督管理工作。
2008年,居民消费价格比上年上涨5.9%,其中食品价格上涨14.3%,固定资产投资价格上涨8.9%。工业品出厂价格上涨6.9%,其中生产资料价格上涨7.7%,生活资料价格上涨4.1%。原材料、燃料、动力购进价格上涨10.5%。农产品生产价格上涨14.1%
材料2说明“社会主义市场经济体制初步建立”,为什么材料1还说“本世纪头20年经济建设和改革的主要任务是完善社会主义市场经济体制”?结合材料4说明围绕改革的重点和难点,应切实解决好哪些关系经济体制改革全局的重大问题?
最新回复
(
0
)