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
5
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 Behind the UN’s certainty may lay outdated and unreliable census data.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/3703383.html
相关试题推荐
Ithinkthatwhatitisnotthattheworldhasbecomecrueler,it’sjustthatwe
Ithinkthatwhatitisnotthattheworldhasbecomecrueler,it’sjust
Chinahasbecomeanindispensableglobalplayer.YetintheWest,thedom
Iwasdirty,smelly,hungryandsomewherebeneathallthat,suntanned.Itwa
Iwasdirty,smelly,hungryandsomewherebeneathallthat,suntanned.Itwa
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
Thegiantpanda,thecreaturethathasbecomeasymbolofconservation,isf
SmokinghasbecomesociallyunacceptableintheUS,inpartduetothehealt
SmokinghasbecomesociallyunacceptableintheUS,inpartduetothehealt
SmokinghasbecomesociallyunacceptableintheUS,inpartduetothehealt
随机试题
Choosethecorrectletter,A,BorC.Wildlifeincityg
选择书刊的开本时,一般需要考虑( )等因素。A.书刊的门类 B.书刊的制版方
关于妊娠合并肝炎,下列处理正确的是A.妊娠早期安胎 B.妊娠中期终止妊娠 C
物块A的质量为m,由图示的高为h的平、凹、凸三种不同形状的光滑面的顶点由静止下滑
电脑因TCP/IP属性设置错误导致无法上网,同一局域网内能正常上网的电脑设置如图
A.如上图 B.如上图 C.如上图 D.如上图
2020年我国农产品贸易额2468.3亿美元,同比增8.0%。其中,出口额同比减
服务式办公室的客户类型包括()等。A:小企业主B:初期创业者C:开拓本地市场
房地产估价报告通常由八大部分组成,包括()等。A:估价委托书 B:致估价委托人
有关Internet中的IP地址,下列说法正确的是( )。A.Internet
最新回复
(
0
)