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
Is there a population problem? My answer【C1】______the question is "YES", there is a problem. The scale of human activities is no
Is there a population problem? My answer【C1】______the question is "YES", there is a problem. The scale of human activities is no
admin
2010-12-02
76
问题
Is there a population problem? My answer【C1】______the question is "YES", there is a problem. The scale of human activities is now so【C2】______that we are appreciably【C3】______the climate and ecosystems in our country, the U.S. and the world.
The total【C4】______of people on the environment is【C5】______to each of two factors:
A) The number of people, and
B) The【C6】______impact of each person.
If we are to【C7】______the total impact of people on the global environment, we must address the first, or preferably both, of these【C8】______
There are many strong forces that will cause【C9】______growth of the average impact of each person on the global environment. To the extent that people in【C10】______countries【C11】______increase their material standard of living to levels more like ours, material consumption per capita will grow. So we are left with the imperative of【C12】______population growth, and then of studying the question, "Can this【C13】______population be sustained?’
To gain a better appreciation of the seriousness of the problem, let us review some very elementary【C14】______Let us consider a【C15】______that is experiencing steady growth【C16】______such as 5% per year.
First we note that this growing quantity will double【C17】______in a fixed time. This doubling time is found by【C18】______70 by the percent growth per year. For example, the doubling time for a steady growth rate of 5% per year is 70/5=14 years.
Second, we note that a few doublings can give enormous numbers. It is convenient to remem-ber【C19】______ten doublings causes the growing quantity to increase in size by a factor of approximately 1000; twenty【C20】______will cause an increase by a factor of 1,000,000, etc.
【C15】
选项
A、amount
B、quality
C、quantity
D、number
答案
C
解析
名词词义衔接和辨析题。句子中的数字5%提示所填的词应该与数量有关,所以可以把答案限定在amount和quantity之间。由下文多次出现的quantity可以知道此处与数字相关的词应该是quantity。
转载请注明原文地址:https://kaotiyun.com/show/rf1K777K
0
专业英语四级
相关试题推荐
HowmanychildrendieeverydayfrommalnutritionandpreventablediseasesaccordingtotheUNestimation?
______you______furtherproblemswithyourprinter,contactyourdealerforadvice.
Thetwochildren______towardstheseaatabout11o’clock.
—Ihopethechildrenwon’tgonearthewater.—Iwarnedthem______.
Thenamesofthosequalifiedapplicants______bytheAcademicSupportCommittee.
Allflights______becauseofthesnowstorm,manypassengerscoulddonothingbuttakethetrain.
Theuseofnuclearpoweristhesubjectofwidespread______.
RogerRosenblatt’sbookBlackFiction,inattemptingtoapplyliteraryratherthansociopoliticalcriteriatoitssubject,succe
Theworld’sgovernmentshavedone______nothingtocombatthethreatofnuclearaccidents.
随机试题
有关疾病一病原体的组合,错误的是()
夜交藤的功效是
根据《公路工程基本建设项目概算预算编制办法》,作为基数计算费用中不包含材料费的有()。
确定股票发行价格的方法有()
基础教育课程改革所倡导的研究性学习、合作学习等教学方式,其主要理论依据是()。
《公务员法》规定,()工作人员纳入公务员范围。
ParentsandstudentsarenowrelyingJessontakingoutloansandmoreongrants,scholarshipsandtheirownincomeandsavings,
在数据库的外模式、模式和内模式三级模式的体系结构中,存在二层映象:它们是外模式到模式的映象和【】的映象。
宏操作中Hj于执行指定的外部应用程序的是()命令。
Hedidn’tinviteusin______words,hejustaskedwhetherwewerecoming.
最新回复
(
0
)