首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
When did the world’s population reach six billion?
When did the world’s population reach six billion?
admin
2009-02-10
42
问题
When did the world’s population reach six billion?
F: Professor Lee, the world’s population passed six billion on Octoberl 1, 1999, we are told. How long did it take to get there and how long will it take to reach seven billion? And ten billion?
M: The world’s population was 300 million at the dawn the Christian era, what we now call the year 1AD. In AD 1500, the world’ s population reached 500 million. It took 304 years until 1804 to reach one billion, another 123 years until 1927, to reach two billion and then only another 33years until 1960, to add another billion to reach three billion.
F: It’s very impressive that the recurring milestones of another billion added to the world’ s population occurred quite quickly.
M: Indeed. The world population reached four billion in 14 years in 1974; five billion in 13years in 1987, and six billion in 12years in 1999. Data suggests that a world population of seven, eight, and nine billion will take respectively another 11,12 and 14years to achieved. The world’ s population should hit ten billion mid-way through the 21 century in the year 2054.
选项
A、304 years.
B、123 years.
C、33 years.
D、14 years.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/vQ6K777K
0
专业英语四级
相关试题推荐
HaveyouevernoticedacertainsimilarityinpublicparksandbackgardensinthecitiesoftheWest?Aubiquitouswoodlandmix
(1)TheTerm"CYBERSPACE"wascoinedbyWilliamGibson,ascience-fictionwriter.Hefirstuseditinashortstoryin1982,and
HarryPotter:TheEndIsHereWhatalotofcommotionoverabook.Notsince19th-centuryNewYorkersanxiouslycrowdedtheM
PASSAGETHREEWhatdoyouthinktheauthorisgoingtotalkaboutfollowingthelastparagraph?
ThroughouttheU.S.studentsaregettingouttheirNo.2pencils,readyendureastress-packedfourhoursofbubblinginanswers
A、ImpactoffarmingtechnologyonIndustrialRevolution.B、Technologyusedinmodernfarmingmethod.C、Inventionsmadeinthe19
TheMessagesinDistanceI.Peoplefromdifferentcultures【T1】______differently【T1】______A.NorthAmericansstandabouttwof
Populationageingandtheresultingpressuresonexistingpensionsystemsconstitutesoneofthemostimportantchallengesmode
Excessivecaloriesfromsugarcancontributetoweightproblems,andsugarisalsowellknownforitsabilitytopromoteteethd
"Almostuniversally,womenhavefailedtoreachleadingpositionsinmajorcorporationsandprivatesectororganizations,resp
随机试题
什么叫投影图?
( )是为数众多的综合性新闻或专题讨论组的总称,它也可以叫做新闻论坛。
乙型肝炎现症感染的血清学标志为
胰岛素的作用不包括
关于恒牙与乳牙的鉴别叙述错误的是()
张小姐2009年年初以每股18元的价格购买了100股某公司股票,2009年每股共得到0.30元的红利。若年底时该公司的股票价格为每股2l元,则该笔投资的持有期收益率为()
税收支出的形式包括( )。
()是管理学的重要内容。
讲授法是教师最常用的教学方法,教师运用讲授法时要遵循其基本要求,下列不符合讲授法基本要求的是()。
SQL可以控制视图的【】方法。
最新回复
(
0
)