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
2023-08-24
56
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 linked 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 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 morality. 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 extend their birth rates. 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 problem 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 BC. till approximately AD. 1650. In the first period of some 9600 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 8000 BC and 1650, an average of only 50,000 persons were 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 statement is true about population increase?
选项
A、There might be an increase of 2.2 billion persons from now to the year 2000.
B、About 50,000 babies are born every six hours at present.
C、Between 8000 BC and the present, the population increase is about 80,000,000 persons every year.
D、The population increased faster between 8000 BC and 1650 than between 1650 and the present.
答案
A
解析
细节题。四个选项都是关于人口增长的数字,可定位至文章最后一段,根据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 2000there will be 6.2 billion people throughout the world,由此可知,目前人口为40亿,到2000年估计可以达到62亿,相比之下增加了22亿,即2.2 billion。故A项正确。因此,正确答案是A。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2952220.html
相关试题推荐
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
UniversityofYorkbiologistPeterMayhewrecentlyfoundthatglobalwarming
UniversityofYorkbiologistPeterMayhewrecentlyfoundthatglobalwarming
UniversityofYorkbiologistPeterMayhewrecentlyfoundthatglobalwarming
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
Inmostpartsoftheworld,therelationbetweenpopulationandresourcesis
Inmostpartsoftheworld,therelationbetweenpopulationandresourcesis
随机试题
Somestudentsarenotadequatelypreparedforcollege.Shouldweturnthema
Alcoholhasapeculiarrelationshiptohappiness.Wedrinktocelebrate,but
工程建设质量保证体系由( )组成。A.思想保证体系 B.组织保证体系 C.
承包人的质量保证体系组成包括思想控制子体系、组织控制子体系和( )控制子体系。
根据《电子信息系统机房设计规范GB50174-2008》,关于人流、物流及出入
学校教育中,全面实现教育目的的基本途径是()A.教学工作 B.德育教育 C
A.丙戊酸钠 B.乙琥胺 C.苯妥英钠 D.硝西泮 E.地西泮治疗癫痫持
凡规定检查溶出度、释放度或融变时限的制剂,不再检查A.重量差异 B.装量差异
在线监测系统的传感器布置应满足于()覆盖所监测的设备,位置分布不得影响局部
(2019年真题)根据《建设工程安全生产管理条例》,关于建设工程安全的说法,正确
最新回复
(
0
)