首页
登录
职称英语
[originaltext] Every year, people in America use energy equal to over 30 mil
[originaltext] Every year, people in America use energy equal to over 30 mil
游客
2023-08-20
113
管理
问题
Every year, people in America use energy equal to over 30 million barrels of oil each day. That’s energy in all forms—oil, gas, coal, nuclear, solar and even wind power. Viewed from scientists’ standpoint, all the energy contained in fuel either now or in the future becomes heat. Some of the heat is used directly or produces useful work: the rest is lost or rejected, radiated into the atmosphere from the engines, motors, boilers and all the other energy-consuming machinery that makes Americans’ wheels go around. If we could figure out how to improve the efficiency with which we use energy, we can do a lot more work with the energy that is available. With money and careful planning, we can boost efficiency up to a point. Yet improvement won’t come easily, it won’t come overnight and there are limits beyond which not even science can take us. According to the Centre for Strategic and International Studies, about three quarters of energy we use to move things, including ourselves, accomplishes no useful work. In terms of efficiency and cleanness, buses, trains and other forms of public or mass transportation are superior to the private automobile. But only if they operate at near capacity, otherwise, their overall efficiency is poor. For some people, mass transit might answer all transportation needs. For others, a combination of mass transit and private transportation may be desirable. Better design and wiser use of both mass transit systems and private vehicles will play an important part in helping America get more out of energy used for transportation.
22. What does the speaker say about energy used in the United States?
23. What do scientists say about energy contained in fuel?
24. When does mass transit prove superior to private vehicles?
25. What seems to be the speaker’s biggest concern?
选项
A、It eventually turns into heat.
B、It is used in a variety of forms.
C、Its use is chiefly responsible for air pollution.
D、Part of it is lost in the process of transmission.
答案
A
解析
四个选项均是与it相关的句子,其中还出现了turns into heat,air pollution之类的词,可猜测it肯定与能源有关系。短文中提到,燃料里所含的全部能源迟早都会变成热量,故答案为A)。
转载请注明原文地址:https://tihaiku.com/zcyy/2943133.html
相关试题推荐
[originaltext]Todaywe’regoingtotalkaboutshynessanddiscussrecentre
[originaltext]Todaywe’regoingtotalkaboutshynessanddiscussrecentre
[originaltext]Todaywe’regoingtotalkaboutshynessanddiscussrecentre
[originaltext]LastweekwetalkedaboutAnneBradstreetandroleofwomeni
[originaltext]LastweekwetalkedaboutAnneBradstreetandroleofwomeni
[originaltext]LastweekwetalkedaboutAnneBradstreetandroleofwomeni
[originaltext]Iknowyou’reanxioustogetyourpermitsandgetstarted.Bu
[originaltext]Iknowyou’reanxioustogetyourpermitsandgetstarted.Bu
[originaltext]TodayIwanttotalkabouttheEarth’slastmajorclimaticsh
[originaltext]M:Hey,Christine,rememberhowwewerecomplainingthatwewanted
随机试题
Israeliarchaeologistshavediscoveredhumanremainsdatingfrom400,000yea
Standardsforcommercialeggproductionvarygreatlyaroundthecountry.In
Thehumanbrainishard-wiredtorecognizefaces.Butrememberingfacesisn
温经汤含有.A.枳实、芍药 B.芍药、大黄 C.大黄、桂枝 D.桂枝
《国家中长期教育改革和发展规划纲要(2010—2020年)》提出把促进公平作为国
期货交易所进行强行平仓的情形有()。A.会员结算准备金余额小于零,并未能在规定
提出“师者,人之模范”的教育家是()。 A.孟子B.荀子C.杨雄D.老
下列各项中,不属于现金管理的目标的是()A.持有性需要 B.交易性需要
(2019年真题)以下属于流动资产的是( )A.存货 B.库存现金 C.应
根据我国现行《企业会计准则》,应计入经营活动产生的现金流量的是()。
最新回复
(
0
)