时间:2019-01-06 作者:英语课 分类:农业与发展


英语课

DEVELOPMENT REPORT - World Population by 2050
By Jill Moss 1


Broadcast: Monday, August 30, 2004


This is Gwen Outen with the VOA Special English Development Report.


New research shows that Earth will have more than nine thousand million people by two thousand fifty. The world population is currently 2 estimated at six point four thousand million.


The research is from the Population Reference 3 Bureau, a private group based in Washington. It says most growth will take place in developing countries in Africa and western Asia.


India is expected to pass China as the world's most populated nation. By the middle of the century, the report says, India will have over one and one-half thousand million citizens, an increase of fifty percent.


China currently has one point three thousand million people. The Population Reference Bureau says the population should increase about ten percent by two thousand fifty.


Most industrial nations will see a drop in their populations. The only big exception is expected to be the United States. The report says the United States will remain the third biggest nation. The population is close to three hundred million now. It is expected to reach four hundred twenty million. The report says this will be because of immigration and low death rates among babies.


Between now and two thousand fifty, Niger is expected to be the fastest growing country. The biggest decrease is expected in Bulgaria.


The study is based on information from governments and the United Nations. Researcher Carl Haub wrote the report. He examined infant death rates, life expectancy 4, birth rates and the age structure of nations. The study also considered family planning use and, for the first time, rates of AIDS.


Mister Haub says most growth will take place in countries with young populations and traditionally large families. He points to Nigeria and Japan as two nations that are moving in opposite directions in terms of population.


In Nigeria, almost half the people are under the age of fifteen. Few are over sixty-five. Nigerian women generally give birth about six times during their lives. By comparison, the average Japanese woman has one child. And today about twenty percent of Japanese are over the age of sixty-five.


Mister Haub expects the Japanese population to decrease by twenty percent. He estimates that the population of Nigeria will increase by more than one hundred twenty percent by the middle of the century.


This VOA Special English Development Report was written by Jill Moss. This is Gwen Outen.



n.苔,藓,地衣
  • Moss grows on a rock.苔藓生在石头上。
  • He was found asleep on a pillow of leaves and moss.有人看见他枕着树叶和苔藓睡着了。
adv.通常地,普遍地,当前
  • Currently it is not possible to reconcile this conflicting evidence.当前还未有可能去解释这一矛盾的例证。
  • Our contracts are currently under review.我们的合同正在复查。
n.提到,说到,暗示,查看,查阅
  • We spent days going through all related reference material.我们花了好多天功夫查阅所有有关的参考资料。
  • I like to have my reference books within my reach.我喜欢把参考书放到伸手可取的地方。
n.期望,预期,(根据概率统计求得)预期数额
  • Japanese people have a very high life expectancy.日本人的平均寿命非常长。
  • The atomosphere of tense expectancy sobered everyone.这种期望的紧张气氛使每个人变得严肃起来。
学英语单词
all-weather operability
appertainance
assigned summer freeboard
astreus hygrometricuss
baroport
bath stone
big with news
Bilozerske
bitemporalis hemianopsia
blendo
boiler deposit
Buelau's method
bullinger
calcium pantothenate
canaan pk.
categorial
chromatographic theory
Chu Ki-chol
clastic limestone
clay crucible
collision bulkhead
comital
complete equipment for production of alcohol
concentric squirrel cage mill
contaminated
contor
control valve plug
controlled valency
cruise attitude
d'oyly
despera
developing capacity
Donje Crnjelovo
ellipsometry
episternums
erevans
evenflo
Flow Meters
gene sequence
geoblocking
grey sheeting
H-shape steel
hamdog
Holice
horizontally split connecting rod
hypoelectrolytemia
influenza pneumonia
inspection clause
intracytoplasm
Kamyshnoye
Kuwayt, Jūn al
licopyranocoumarin
life or limb
light heavy weight
lindt
liquid waste discharge pump
low-frequency impedance
lump parameter
magnetospectrograph
makes for
Mankes
marine telephone set
middling product
multiple regressing
nasal bone
Nduru
nonmason
nontotemic
opened end
operator algebra
originality and device
pea leafminer
Pecos Plains
pignatelli
polytone
portable tea pruning machine
pre-investments
pro-Allied
rational cohomology group
registered ship
rock-hopping
room-dry condition
rotating service structure
rough bearded grass
shape for crossing ferry
sheath-reshaping converter
siltier
simazin
sonic carburetion
stiffening diaphragm
stuck in my heart
subfornical organ (sfo)
thorium lead age method
tidal current scour
to move on
tower-type batch plant
uncancerous
well counter
wet-looks
word-strings
yttrium oxalate