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
90
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、When it is used in rural areas.
B、When it is environment-friendly.
C、When it operates at near capacity.
D、When it operates at regular times.
答案
C
解析
四个选项均以When开头,used和operates均为表示使用、操作类的词汇,因此推测本题与使用某物的条件有关。短文中提到公共交通工具只有在发挥最大能效时,才能在能源使用效率和清洁度上优于私人交通工具,故答案为C)。
转载请注明原文地址:https://tihaiku.com/zcyy/2943134.html
相关试题推荐
AlmostathirdofallAmericansaretossingandturning,unabletogetagoo
AlmostathirdofallAmericansaretossingandturning,unabletogetagoo
AlmostathirdofallAmericansaretossingandturning,unabletogetagoo
[originaltext]Everyyear,peopleinAmericauseenergyequaltoover30mil
[originaltext]Everyyear,peopleinAmericauseenergyequaltoover30mil
[originaltext]Ifsheernumbersprovideanyproof,America’suniversitiesar
[originaltext]Youprobablyknowwhatamobileis,butthemobileI’mtalkin
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
随机试题
[originaltext]Welcome,everybody,tothelovelyhouseandgardensofRosewo
Whowasthemostimportantpersoninthespeaker’schildhood?Thespeaker’s____
【B1】[br]【B2】[originaltext]TodayIwanttohelpyouwithastudyreadingm
所有者权益变动表是()。A.利润表的附表 B.资产负债表的附表 C.现金流量
肾盂肿瘤最常见的病理类型是A.鳞状上皮癌 B.移行上皮细胞癌 C.透明细胞癌
相比于2015年,2018年创新投入指数4个评价指标中增幅在20%与5
人工湿地对污染物质的净化机理非常复杂,它不仅可以去除有机污染物,同时具有一定的去
中国人民银行根据执行货币政策和维护金融稳定的需要,可以建议国务院银行业监督管理机
下列物权类型中,属于用益物权的有( )。A.地役权 B.建筑物区分所有权
甲企业与乙企业签订了一份货物交换合同,甲企业以价值50万元的A货物交换乙企业价值
最新回复
(
0
)