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
50
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.
【C4】
选项
A、effect
B、influence
C、affection
D、impact
答案
D
解析
名词辨析题。effect是“结果、影响,作用”;influence是“影响,作用,感化力”,一般强调某人对他人或事物的影响;affection是“喜爱”;impact是“冲击,碰撞,作用”,一般指不良影响。根据句意,人口对环境造成了不良影响,所以选择impact。
转载请注明原文地址:https://kaotiyun.com/show/if1K777K
0
专业英语四级
相关试题推荐
HowwillUNICEFhelptheAfricanchildren?
HowmanychildrendieeverydayfrommalnutritionandpreventablediseasesaccordingtotheUNestimation?
3.______wehaveachievedisattributedtotheguidanceofourparents.
—Ihopethechildrenwon’tgonearthewater.—Iwarnedthem______.
IknowHelena.Sheis______sistersinherfamily.
Thequestionis______wewillhaveoursportsmeetnextweek.
Sociologistsuse"power"torefertothecapacityofpeopletocontrolorinfluencetheactionsofothers.Sociologistsstudypo
Sociologistsuse"power"torefertothecapacityofpeopletocontrolorinfluencetheactionsofothers.Sociologistsstudypo
随机试题
由劳动者作为一个个体环境来执行并受其制约的,即受个人的劳动态度、动机、认识、情绪、个性等心理条件影响的是
面神经丘()
关于心肌炎患者的护理哪项是错误的()。
疾病的标与本的概念下列哪项是不确切的()
防护栏杆府由上、下两道横杆及栏杆柱组成,上杆离地高度为1.0~1.2m,下杆离地高度为0.5~0.6m。除经设计计算外,横杆长度大于( )m时,必须加设栏杆柱。
根据劳动和社会保障部《关于制止和纠正违反国家规定办理企业职业提前退休有关问题的通知》(劳动部发[1999]8号)的相关规定,国家法定的企业员工退休年龄是男年满()周岁,女工人年满()周岁。
增值税一般纳税人购入生产经营用固定资产,其入账价值通常包括()。
儿童认为“不能打洋娃娃,因为她会疼”,则该儿童处于皮亚杰认知发展的()阶段。
设3元的实二次型f=xTAx的秩为1,且A的各行元素之和为3.求一个正交变换x=Py将二次型f=xTAx化成标准;
Weallhaveupsanddowns,andusuallyit’sjustbesttoacceptthem.Butperhapsyouareconcernedaboutsomeonewhoseemstob
最新回复
(
0
)