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
Cars account for half the oil consumed in the U. S. , about half the urban pollution and one fourth the greenhouse (温室) gases. T
Cars account for half the oil consumed in the U. S. , about half the urban pollution and one fourth the greenhouse (温室) gases. T
admin
2012-07-22
65
问题
Cars account for half the oil consumed in the U. S. , about half the urban pollution and one fourth the greenhouse (温室) gases. They take a similar oil of ullage (损耗) resources in other industrial nations and in the cities of the developing world. As vehicle use continues to increase in the coming decade, the U. S. and other countries will have to deal with these issues or else face unacceptable economic, health-related and political costs. It is unlikely that oil prices will remain at their current low level or that other nations will accept a large and growing U.S. contribution to global climatic change.
Policymakers and industry have four options: reduce vehicle use, increase the efficiency and reduce the e missions of conventional gasoline-powered vehicles, switch to less harmful fuels, or find less polluting driving systems. The last of theses-in particular the introduction of vehicles powered by electricity--is ultimately the only sustainable option. The other alternatives are attractive in theory but in practice are either impractical or offer only marginal improvements. For example, reduced vehicle use could solve traffic problems and a host of social and environmental problems, but evidence from around the world suggests that it is very difficult to make people give up their cars to any significant extent. In the U. S. , mass-transit ridership and carpooling (合伙用车) have declined since World War II. Even in western Europe, with fuel prices averaging more than $ 1 a liter (about $ 4 a gallon) and with easily accessible mass transit and dense populations, cars still account for 80 percent of all passenger travels.
Improved energy efficiency is also appealing, but automotive fuel economy has barely made any progress in 10 years. Alternative fuels such as natural gas, burned in internal-combustion engines, could be introduced at relatively low cost, but they would lead to only marginal reductions in pollution and greenhouse emissions especially because oil companies are already spending billions of dollars every year to develop less polluting types of gasoline.
Which of the following is the best solution to the problems mentioned in the passage?
选项
A、The designing of highly efficient car engines.
B、A reduction of vehicle use in cities.
C、The development of electric cars.
D、The use of less polluting fuels.
答案
C
解析
要点定位题。根据题干中的“solution”可确定答案在第二段,又根据“best”可进一步确定答案在该段第二句“...is the only sustainable(可持续)option”。
转载请注明原文地址:https://kaotiyun.com/show/V0mK777K
0
专业英语四级
相关试题推荐
inarecentsciencecompetition,thethreestudentswereawardedscholarshipstotaling$21,000.
Whencompaniesdobusinessoverseas,theycomeincontactwithpeoplefromdifferentcultures.Theseindividualsoftenspeakad
Atwenty-year-oldimmigrant,LeviStrauss,cametotheUnitedStatesin1850toseekhisfortuneinthegoldfields.Butstrange
Hawksserveanimportantpurposeintheschemeofnature______ondestructiverodents,suchasmiceandrats.
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica-breakthroughssuchasthetelegraph,thesteamboatand
Noonewouldhavetimetoreadorlistentoanaccountofeverything______goingonintheworld.
ThepollutionquestionaswellasseveralotherissuesisgoingtobediscussedwhentheCongressisin______againnextspring.
IamsorryIhavenotimeatpresentto______moredetailorgiveyouanaccountoftheincident.
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica-breakthroughssuchasthetelegraph,thesteamboatand
随机试题
孕妇患生殖道疱疹其阴道分娩的指征为________。
HBV慢性感染者具有HBsAg阳性、HBeAg阳性、抗HBC阳性、HBV,DNA阳性,而ALT正常者,应诊断为
虽然可持续发展可能需要世界上每个区域采取不同的行动,但在下列哪三个关键领域必须采取一体化行动?()
关于预制涵洞拱圈的安装施工,正确的有()。
背景资料某施工单位承接了一高速公路标段K10+300一K24+400的施工。合同中约定,工程价款采用调值公式动态结算。该工程材料费、人工费各占工程价款中的30%,不调值费用占40%。6月材料价格指数比基期上升30%。6月完成工程量金额为463万元。其主要
一般情况下筹资活动产生的企业净资金流量越大越好。()
城里人能够看到什么月亮?即使偶尔看到远远的天空上一丸灰白,但_______于无数路灯之中,磨损于各种噪音之中,稍纵即逝在丛林般的水泥高楼之间,不过像死鱼眼睛一只,丢弃在_______的垃圾里。填入画横线部分最恰当的一项是:
已知变量x与y之间的关系如下图所示,下列哪四个数字最可能是其相关系数?()
【N1】______fromtheUnitedStatesshowthatmorethan200,000newjobswerecreatedlastmonth.Unemployment【N2】______tounder9
HowtoApproachDiscursiveWriting?Howtoimprovetheeffectivenessofstudents’writing?Therearesixstageswhichshould
最新回复
(
0
)