首页
登录
职称英语
On October 31, a newborn baby somewhere in the world will become the 7 billi
On October 31, a newborn baby somewhere in the world will become the 7 billi
游客
2023-10-10
29
管理
问题
On October 31, a newborn baby somewhere in the world will become the 7 billionth member of the human race. Or so says the UN—alternatively, this date could be at least a year too early. Behind the UN’s certainty may lay outdated and unreliable census data. The suspicion is that millions of births and deaths have not been counted and there is huge uncertainty about the rate at which women are giving birth. The precise "day of 7 billion" may not matter much. But the inaccuracies(不精确)make it harder to answer a more important question: is human population set to peak within the next few decades or will it carry on growing beyond that?
Wolfgang Lutz of the Vienna Institute of Demography says the UN is "under political pressure to disregard(忽视)uncertainty and name a date" for 7 billion. But he and colleague Sergei Scherbov estimate that the world probably won’t reach 7 billion until early in 2013, though it could be as late as 2020. The director of the UN population division Hania Zlotnik defends her data but agrees that "an interval of a few months or even a year would be a reasonable range of uncertainty".
One problem for demographers(人口统计学家)is undercounting. Even developed countries calculate their censuses miss up to 3 percent of people. Up-to-date figures have to adjust for both of this and the changes since the last census, which could be decades in the case of some African countries. So adjusting for extra people is routine. The big danger, Scherbov says, may be over-adjusting. The world has seen a dramatic decline in fertility in recent years, with the average woman now having only 2. 5 children, half as many as her grandmother 50 years ago. So there may be far fewer new arrivals than demographers assume.
Questions: [br] According to Scherbov, what is the result of over-adjusting the big danger?
选项
答案
A dramatic decline in fertility.
解析
由题干中的Scherbov,big danger定位到第三段第五句.第四、五句的句意为,对多余的人口数目进行调整是惯例,但是Scherbov表示大的危险或许被矫枉过正了.第六句接着指出,近年来世界人口繁殖呈现戏剧化的衰落。由此可以判断大的危险被矫枉过正的结果就是人口繁殖的戏剧化衰落。
转载请注明原文地址:https://tihaiku.com/zcyy/3088765.html
相关试题推荐
Hetookawaytenpapers,butonlysevenwereinhispocket.Whathadbecome____
SpaceenthusiastshopingtobecomeChinasnextastronautsmustpass"super
SpaceenthusiastshopingtobecomeChinasnextastronautsmustpass"super
OnOctober2nd,AshokaMukpolefthisfatheravoicemailfromMonrovia,say
OnOctober2nd,AshokaMukpolefthisfatheravoicemailfromMonrovia,say
Writeaboutthefollowingtopic:Inrecentyears,travelhasbecomeacommontop
Writeaboutthefollowingtopic:Inrecentyears,travelhasbecomeacommontop
LastOctober,ToddBrillwastalkingtohismotherinthediningroomofthei
LastOctober,ToddBrillwastalkingtohismotherinthediningroomofthei
LastOctober,ToddBrillwastalkingtohismotherinthediningroomofthei
随机试题
Howmuchisthebeginner’scourse?[br]Howdothegirlswanttotravel?[origin
[originaltext]M:Theguyinthenextapartmenthasbeenplayingtrumpetformor
下列选项中属于职业道德基本规范中服务群众的有()。A.为人民群众服务 B.在
教师在课后反思的评语中,这样写道“本班学生正处于变声期,并且心肺功能还处在生长发
地图的图幅设计包括()A:数学基础设计B:地图的分幅设计C:图面配置设计D
盐酸异丙肾上腺素气雾剂处方:盐酸异丙肾上腺素2.5g;乙醇296.5g;维生素C
2014—2019年,全国风电发电量同比增速超过20%的年份有( )个
下列说法中,正确的是( )。A.大赦既赦其刑,又赦其罪B.特赦只赦其刑
男性,36岁。进食时左侧颌下区肿胀疼痛,进食后数小时方可逐渐消退。检查见颌下腺导
位于瑞士的某非居民企业,未在我国境内设立机构场所,2020年发生的与我国境内相关
最新回复
(
0
)