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
专升本
A recent study described coal as a "bridge to the future". As the most plentiful fossil(化石) fuel in the world, coal has the poss
A recent study described coal as a "bridge to the future". As the most plentiful fossil(化石) fuel in the world, coal has the poss
admin
2019-01-24
27
问题
A recent study described coal as a "bridge to the future". As the most plentiful fossil(化石) fuel in the world, coal has the possibility for filling a growing portion of the demand for energy. But problems cause some trouble to this promising old fuel.
Coal is found around the globe, but three countries—the United States, the Soviet Union and China own nearly two thirds of all known coal reserves.
At present rates of using coal these reserves would last the world more than 200 years, according to the estimates carefully made. Furthermore, scientists think the world probably has 15 times this much coal.
While the United States has the largest share—more than a quarter of the 786 billion tons of known world coal reserves, both the Soviet Union and China produce almost as much coal as the U. S. does.
In addition to the category of known reserves, the U. S. Geological Survey (地质调查所) has calculated that the United States has an estimated 1. 7 trillion (万亿) tons of coal at depths of less than 3,000 feet. Unfortunately, much of this coal is not easy to get with present technology or at present prices.
To produce and use much more coal than we do today, a number of problems will have to be solved: capital at high interest rates, manpower, and transportation, including insufficient rail facilities. Environmental concerns include the proper development of mine sites, possible changes in global climate caused by increased carbon dioxide from burning coal, and the objects that are sent out from coal stacks (烟囱) that wear out buildings, poison lakes, and damage human lungs.
According to the passage, which of the following statement is true?
选项
A、The U. S. has about 1.7 trillion tons of coal at depths of more than 3,000 feet.
B、Scientists think that all coal reserves have been found out.
C、All coal is easy to get because we have modern technology.
D、The U. S. and China produce almost equal amounts of coal.
答案
D
解析
根据文章第三段最后一句话both the Soviet Union and China produce almost as much coal as the U.S.does,可知D为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/yVaC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Acomputercompanyhasaspecialpersonwhoanswersallquestionsthataresenttohim.Thepersonisa63yearsoldman.Heis
Whenallthepeoplehadassembled,theking,surroundedbyhiscourt,【C1】______asignal.Thenadoorbeneathhimopened,andthe
WhentheOldandNewCitiesofJerusalemwerereunitedin1967,arecentlywidowedArabwoman,whohadbeenlivinginOldJerusa
JohnPaulJoneswasoneofthefoundersoftheUnitedStatesNavy.DuringtheRevolution,thecoloniesweredesperate.Theyneed
Japan’s24-hourconveniencestores,alreadystrugglingwithlaggingsalesandgrowth,maysoonfaceyetanotherthreat—movesto
Forthispart,youaresupposedtowriteanessayinEnglishinabout100-120wordsbasedonthefollowingsituation.Remembert
Computersmayonedayturnnightintoday—withgoodold,naturalsunlight.Colossalcomputer-controlledmirrors,thousandso
CliffordStollranacomputersysteminBerkeley,California.Asasystemadministrator,hekeptacloseeyeontherecords.On
Thestrangecloseunderstandingbetweentwinsisafamiliarenoughphenomenon.Oftentheyseemtounderstandeachotherandshar
PeoplecomplainthatAthecostofBsettingupacompanyCaresogreatthatonlytherichcanaffordDtorunacompanyinthatco
随机试题
A.糖原合酶B.丙酮酸羧化酶C.磷酸化酶D.丙酮酸脱氢酶复合体E.丙酮酸激酶糖异生的关键酶是
患者,女,59岁。既往体健,吸烟20年。3周前开始出现刺激性咳嗽,咳痰不爽,右侧胸痛,面青唇暗,大便秘结,舌质暗紫有瘀斑,脉弦。胸部CT显示:右上肺外侧类圆形阴影,边缘不清,有毛刺,分叶状,有偏心空洞,未发现淋巴结肿大。其主要治疗措施应为
下列哪种主体是1954年宪法的制宪主体?()
《村镇建房用地管理条例》发布时起至《土地管理法》开始施行时止,农村居民建房占用的宅基地,其面积超过当地政府规定标准的,对超过部分处理方法正确的是()。
一横波沿绳子传播时的波动方程为y=0.05cos(4πx一10πt),(SI),则()。
大气污染物的治理技术主要有()。
Likemostofmyschoolmates,Ihaveneitherbrothersnor【M1】______sisters,inanyotherwords,Iamanonlychild.Myparents【M
()是学生本人和家庭向学校交付的一种费用。
根据以下资料,回答下列问题。2006年某省从事高新技术产品出口的企业共计1.65万家,比2002年翻了一番。各类企业在数量上保持了增长态势,其中国有企业数量比2002年增长11%,合资企业数量增长23%,外商与港澳台商独资企业数量增长了1.5倍,集体企业
中国特色社会主义的根本原则及本质要求是
最新回复
(
0
)