首页
登录
职称英语
We can begin our discussion of "population as global issue" with what most p
We can begin our discussion of "population as global issue" with what most p
游客
2025-01-14
17
管理
问题
We can begin our discussion of "population as global issue" with what most persons mean when they discuss "the population problem": too many people on earth and a too rapid increase in the number added each year. The facts are not in dispute, it was quite right to employ the analogy that likened demographic growth to "a long, thin powder fuse that burns steadily and haltingly until it finally reaches the charge and explodes. "
To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a comparatively recent phenomenon. Looking back at the 8,000 years of demographic history, we find that populations have been virtually stable or growing very slightly for most of human history. For most Of our ancestors, life was hard, often nasty, and very short. There was high fertility in most places, but this was usually balanced by high mortality. For most of human history, it was seldom the case that one in ten persons would live past forty, while infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birthrates. Thus, the population problem throughout most of history was how to prevent extinction of the human race.
This pattern is important to notice. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid increase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high mortality.
Demographic history can be divided into two major periods, a time of long, slow growth which extended from about 8,000 B. C. till approximately A. D. 1650. In the first period of some 9,600 years, the population increased from some 8 million to 500 million in 1650. Between 1650 and the present, the population has increased from 500 million to more than 4 billion. And it is estimated that by the year 2000 there will be 6.2 billion people throughout the world. One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8,000 ]3. C and 1650, an average of only 50,000 persons was being added annually to the world’s population each year. At present, this number is added every six hours. The increase is about 80,000,000 persons annually. [br] Which of the following demographic growth pattern is most suitable for the long thin powder fuse analogy? ______
选项
A、A virtually stable or slightly decreasing period and then a sudden explosion of population.
B、A slow growth for a long time and then a period of rapid, dramatic increase.
C、Too many people on earth and a few rapid increase in the number added each year.
D、A long period when death rates exceeds birthrates and then a short period with higher fertility and lower mortality.
答案
A
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3912704.html
相关试题推荐
Whatisthemaintopicofthepassage?[br][originaltext]Rapidpopulation
Whatisthemaintopicofthepassage?[br][originaltext]Rapidpopulation
Whatisthemaintopicofthepassage?[br][originaltext]Rapidpopulation
Whatisthemaintopicofthepassage?[originaltext]Rapidpopulationgrowth
Theworldpopulationwasnomorethan5.7billionbeforetheProgrammewasenfor
Theworldpopulationwasnomorethan5.7billionbeforetheProgrammewasenfor
Theworldpopulationwasnomorethan5.7billionbeforetheProgrammewasenfor
Passage1[br][originaltext]Withtheeconomicglobalization,moreandmore
Largepartsoftheworldhavenotenjoyedtheremarkableglobalprogressin
Largepartsoftheworldhavenotenjoyedtheremarkableglobalprogressin
随机试题
[originaltext]Whydidthepresidentputoffthemeetingforanotherday?(A)No,
TheAmericandefinitionofsuccessislargelyoneofacquiringwealthanda
Accordingtothepassage,marketingusedtobemainlyconcernedwith______.[br
TheJapanesesaytheysufferfromaneconomicdiseasecalled"structuralpe
[originaltext]W:Mr.Green,youhavetostayinbedforacoupleofdays,andt
根据企业所得税的相关规定,下列各项表述中正确的有()。A、境内投资方企业发生的
患者男性,65岁。有消化性溃疡史20年,期间多次节律性发作,近几个星期上腹疼痛,
关于企业标准的说法,正确的是()。 A.企业标准只能是产品标准 B.企业标
简述现代企业人力资源管理各个历史发展阶段的特点。
下列选项中,对贷款展期的叙述正确的有( )。A.除法律另有规定外,短期贷款展期
最新回复
(
0
)