首页
登录
职称英语
We can begin our discussion of "population as global issue" with what most
We can begin our discussion of "population as global issue" with what most
游客
2024-05-13
13
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. [br] The word "demographic" (Line 4, Para. 1 ) means ______.
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/3596563.html
相关试题推荐
Wecanbeginourdiscussionof"populationasglobalissue"withwhatmost
Wecanbeginourdiscussionof"populationasglobalissue"withwhatmost
Wecanbeginourdiscussionof"populationasglobalissue"withwhatmost
Theproblemofpopulationismainlyman-made.[br]Now,forhumanbeings,eighty
Theproblemofpopulationismainlyman-made.[br]Therewillbe______bornina
Theproblemofpopulationismainlyman-made.[br]By"DeathControl",theautho
Withrapidgrowthofworldpopulation,mainlyindevelopingcountries,thea
Withrapidgrowthofworldpopulation,mainlyindevelopingcountries,thea
Withrapidgrowthofworldpopulation,mainlyindevelopingcountries,thea
Infaceoftheevolvingglobaleconomy,theauthorsuggeststhattheemphasisin
随机试题
[A]Weapplyforcreditformanyreasons—maybeit’stobuyanewcar,house,comp
Thegreenhouseeffectcausestroublebyraisingthetemperatureoftheplane
下列关于油漆、涂料计量的说法,正确的有()。A.金属面油漆,计量单位为㎡ B
患者,女,68岁。肺心病,下肢水肿,喘息严重并呈端坐呼吸。护士观察病情时,应重点
有下列哪种情形的,行政机关应当及时作出解除查封、扣押决定?()A.当事人违法行为
下列属于商业银行的表外资产业务的是()。A.现金资产业务 B.外汇交易业务
王一、张二、李四成立了某有限责任公司,后王五、郑七、周八加人公司成为股东。以下关
A.土鳖虫 B.蛤蚧 C.人参 D.泽泻 E.荜澄茄按照对抗贮存法,宜与
小型箱涵顶进穿越铁路路基时,可采用调轨梁或( )的方式加固线路。A.轨束梁
6个月的婴儿患化脓性脑膜炎,疑有硬膜下积液。为明确诊断,需要检查A、做腰穿,观察
最新回复
(
0
)