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
66
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 Behind the UN’s certainty may lay outdated and unreliable census data.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] The censuses miss of developed countries would be up to______.
选项
答案
3 percent of people
解析
由题干中的censuses miss和developedcountries定位到第三段第二句。由定位句可知,即使是发达国家的人口普查数据的误差也高达3%。
转载请注明原文地址:https://tihaiku.com/zcyy/3088764.html
相关试题推荐
Chinahasbecomeanindispensableglobalplayer.YetintheWest,thedom
Iwasdirty,smelly,hungryandsomewherebeneathallthat,suntanned.Itwa
Thefirsthintofwhatwastobecomethemostsuccessfulmeansofraisingmoney
Nuclearpowerplants,______tosomeseriousbreakdowns,havebecomeacenterof
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
SmokinghasbecomesociallyunacceptableintheUS,inpartduetothehealt
SmokinghasbecomesociallyunacceptableintheUS,inpartduetothehealt
随机试题
Readcarefullythefollowingexcerptonintelligentmachine,andthenwrite
对过程的电子化管理和数据初始化的过程中,过程的电子化管理可帮助系统规划与管理师在
根据《网络表演经纪机构管理办法》,网络表演经纪机构发现签约网络表演者所提供的网络
标题一般写在统计表的()。A.左下方 B.右上方 C.左上方 D.正上
男,68岁双侧肾动脉狭窄,有哮喘史,气短、心悸就诊,体征和实验结果为血压172/
关于中国商业银行的流动性风险控制特点描述不正确的是()A.头寸管理是重要的
男性,22岁,右手背部深Ⅱ度烧伤10天,近一天出现乏力、头痛及张口困难,不恰当的
2022年1月16日是2022世界雪日暨国际儿童滑雪节。国际雪联中国青少年滑雪示
下列选项,属于非正式沟通的内容是()。 A.选择非正式的商谈对象B.选择非
甲公司为增值税一般纳税人,2019年8月1日,甲公司购入一台需要安装的
最新回复
(
0
)