首页
登录
职称英语
We can begin our discussion of "population as global issue" with what most pe
We can begin our discussion of "population as global issue" with what most pe
游客
2023-09-15
30
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 bums 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 8000 B.C. till approximately 1650 A.D. In the first period of some 9,600 years, the population increased from some 8 million to 500 million in 1650. Between 1650 and 1975, the population has increased from 500 million to more than 4 billion. And the population reached 6.2 billion throughout the world by the year 2000. 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 B.C. and 1650, an average of only 50,000 persons was being added annually to the world’s population. At present, this number is added every six hours. The increase is about 80,000,000 persons annually.
选项
A、statistics of human
B、surroundings study
C、accumulation of human
D、development of human
答案
A
解析
语义题。由文章第一段中的the population problem及rapid increase in the number可知,demographic的含义应该与“人口”和“数量”有关,而-graphic表示“写、画、记录的”,由此推断A(人口统计)正确。B (环境研究),C(人口的积聚),D(人类的发展),均与文意不符,故排除。
转载请注明原文地址:https://tihaiku.com/zcyy/3016492.html
相关试题推荐
A.BusinessmanagerYouwillberesponsibleforourglobalbusinesswithi
A.BusinessmanagerYouwillberesponsibleforourglobalbusinesswithi
A.BusinessmanagerYouwillberesponsibleforourglobalbusinesswithi
A.BusinessmanagerYouwillberesponsibleforourglobalbusinesswithi
A.BusinessmanagerYouwillberesponsibleforourglobalbusinesswithins
A.BusinessmanagerYouwillberesponsibleforourglobalbusinesswithins
AttheKyotoconferenceonglobalwarminginDecember1997,itbecameabunda
Whatdoesthepassagemainlydiscuss?[br]Thegrowthofthepopulationcausedt
Globalwarmingreferstotheaveragetemperatureoftheatmosphere,oceans,and
Globalwarmingreferstotheaveragetemperatureoftheatmosphere,oceans,and
随机试题
Asaclassassignmentyouhavebeenaskedtowriteadescriptionoflifecyc
Althoughthedangersofalcoholarewellknownandhavebeenwidelypubliciz
莫高窟(TheMogaoCaves/TheMogaoGrottoes),位于敦煌市东南25公里处,东面是鸣沙山,是著名的佛教(Buddhist)
利息保障倍数主要说明公司的什么情况?A.偿付能力 B.流动性 C.资产管理
38岁已婚妇女,GP,连续2次TCT结果为:未明确诊断意义的不典型鳞状细胞(AS
以下关于质量控制点的表述不正确的是( )。A、是施工质量计划的组成内容 B、
对于伴发房颤和冠心病的TIA患者,推荐使用的治疗药物是A、抗凝药 B、抗血
居民企业适用的企业所得税法定税率是()。A.15% B.18% C.25%
呈圆柱形,根头略膨大,可见暗绿色或暗棕色轮状排列的叶柄残基和密集的疣状突起的药材
某集中供热锅炉扩建项目,拟新增污染源G1,关停现有锅炉污染源G2,取代周边小锅炉
最新回复
(
0
)