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
2024-08-03
4
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 Behind the UN’s certainty may lay outdated and unreliable census data.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 census data of the UN may be______.
选项
答案
outdated and unreliable
解析
由题干中的census data,UN定位到第一段第三句。该句指出,在联合国肯定的背后,或许是过时的、不可靠的人口普查数据。该题是对文中句子的转述。
转载请注明原文地址:https://tihaiku.com/zcyy/3703379.html
相关试题推荐
Ithinkthatwhatitisnotthattheworldhasbecomecrueler,it’sjust
Chinahasbecomeanindispensableglobalplayer.YetintheWest,thedom
Ithinkthatwhatitisnotthattheworldhasbecomecrueler,it’sjustthatwe
Iwasdirty,smelly,hungryandsomewherebeneathallthat,suntanned.Itwa
Iwasdirty,smelly,hungryandsomewherebeneathallthat,suntanned.Itwa
Thefirsthintofwhatwastobecomethemostsuccessfulmeansofraisingmoney
Nuclearpowerplants,______tosomeseriousbreakdowns,havebecomeacenterof
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
SmokinghasbecomesociallyunacceptableintheUS,inpartduetothehealt
随机试题
Forpeoplesufferingfromdepression,theadviceisusuallythesame:seekh
如果模型中的解释变量存在完全的多重共线性,参数的最小二乘估计量是()A.无偏的
D提示首先画出该电路的复数电路图如解图a)所示,然后画相量图分析(见解图b),可见,由于电参数未定,各相量之间的关系不定。 注意此题可以用“排除法”完成,分
枳实的理气功效是()A.行气 B.纳气 C.疏肝 D.破气 E.降
斑蝥米炒时,每100kg药物用米的量是A.5kgB.10kgC.15kgD.20
货币就其本质而言,可分为()。A.非债务货币 B.债务货币 C.金属货币
A.活血祛瘀,通经下乳 B.散瘀止痛,续筋接骨 C.活血止痛,化瘀止血 D
中国公民张某系自由职业者。2019年1月~12月收入情况如下: (1)年初开始
下列各项中,属于企业留存收益的有()。A.按规定从净利润中提取的法定盈余公积
下列影响建设工程项目实施的风险因素中,属于经济与管理风险的是()。A.气象条件
最新回复
(
0
)