首页
登录
职称英语
When did the world’s population reach six billion? [br] [originaltext]F: Profe
When did the world’s population reach six billion? [br] [originaltext]F: Profe
游客
2023-11-23
10
管理
问题
When did the world’s population reach six billion? [br]
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://www.tihaiku.com/zcyy/3211204.html
相关试题推荐
Thesepeoplewerearrestedfor_______.[br][originaltext]TheIranianaut
Themanhasnotbeenableto______recently.[br][originaltext]M:I’msotire
Themanhasnotbeenableto______recently.[br][originaltext]M:I’msotire
Themanhasnotbeenableto______recently.[originaltext]M:I’msotired,Ic
Thisconversationismostlikelytotakeplace______[br][originaltext]W:Bef
Thisconversationismostlikelytotakeplace______[br][originaltext]W:Bef
Thepartywasheld______[br][originaltext]M:AreyoufeelingOK,Jane?Youlo
WhatplaguearesomeAfricancountriesfacing?[br][originaltext]AUnited
WhatplaguearesomeAfricancountriesfacing?[originaltext]AUnitedNatio
ScientistsareinterestedinMarsbecause_______________.[br][originaltext]
随机试题
IspentMondaymorningataspeedawarenesscourse,whereasIhadbeendispa
WhyDoWeNotLiveForever?Thehumanbodyi
“断桥不断”“长桥不长”运用了形式逻辑中的矛盾律。( )
女,13岁,发热伴右大腿痒痛2周,查体:精神萎靡,患肢呈半屈曲位,皮温高,大腿远
实绩原则就是以下属的实绩为依据,给予适当方式的激励。 根据上述定义,下列情况
交易策略的单笔平均盈利与单笔平均亏损的比值称为()。?A.收支比 B.盈亏比
A.气滞血瘀 B.气虚血瘀 C.痰瘀痹阻 D.寒凝心脉 E.气阴两虚胸闷
下列应税消费品中,除了在生产销售环节征收消费税外,还应在批发环节征收消费税的是(
在500kV变电站中,下列短路情况中哪项需考虑并联电容器组对短路电流的助增作用?
三尖瓣狭窄进一步检查
最新回复
(
0
)