族群生长动态

Lesson 9 Is It a Good Idea to Control Population Growth in the World? Text What Overpopulation Feels Like We moved slowly through the city in a taxi and entered a crowded slum district. The temperatur

发表于:2018-11-27 / 阅读(219) / 评论(0) 分类 高级口语教程

The U.S. population is increasing at nearly one percent a year, making the United States the world's fastest growing industrial nation. 美国人口正以每年将近1%的速度增长,这使美国成为世界人口增长最快的工业化国家。

发表于:2018-12-02 / 阅读(121) / 评论(0) 分类 VOA双语新闻 Bilingual News

EXPLORATIONS -January 30, 2002: Population and the Environment By Cynthia Kirk VOICE ONE: This is Bob Doughty. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Tod

发表于:2018-12-07 / 阅读(119) / 评论(0) 分类 Explorations

Women Bear Brunt of Population Growth The global population is expected to rise to nine billion by 2050. Most of that growth will be in developing countries. However, many are asking whether such growth is sustainable, considering the amount of resou

发表于:2018-12-16 / 阅读(80) / 评论(0) 分类 VOA标准英语2013年(六月)

Population Growth It is well-known that there has been a drastic increase in world population. But it is probably less well-known that the extinction rate of wildlife species is experiencing a parallel trend. Take the United States for instance. In 1

发表于:2018-12-18 / 阅读(146) / 评论(0) 分类 英语专业四级听力50篇

DEVELOPMENT REPORT – December 16, 2002: UN Population Study By Jill Moss Broadcast: December 16, 2002 This is the VOA Special English Development Report. The United Nations Population Fund has relea

发表于:2019-01-02 / 阅读(104) / 评论(0) 分类 农业与发展

By Jerilyn Watson Broadcast: September 11, 2003 This is Steve Ember with the VOA Special English Education Report. About one-in-four people age three and older in the United States is a student. The g

发表于:2019-01-02 / 阅读(102) / 评论(0) 分类 VOA2003(下)-教育与新闻

By Michael Bowman Washington 07 March 2006 view Global Population report By 2050, world population is projected to reach nine billion people. That would constitute a 38 percent jump from today's popul

发表于:2019-01-06 / 阅读(209) / 评论(0) 分类 2006年VOA标准英语(三月)

Theres been an unexpected development in our understanding of drug resistance in bacteria. The accepted scenario was a simple case of evolutionary selection. In a bacterial population exposed to a killer drug, a few lucky individuals might have a gen

发表于:2019-01-08 / 阅读(187) / 评论(0) 分类 Scientific American(九)月

The same mathematical models used to study the hunting range of lions have many other applicationsthey describe the flight patterns of honeybees. And now researchers say these math models can help explain the stability of gang territories and pattern

发表于:2019-01-08 / 阅读(143) / 评论(0) 分类 Scientific American(七)月

By Lisa McAdams Moscow 08 March 2006 No country faces as severe a population decline as Russia. Disease, accidental death, and a decline in healthy newborns are to blame. In fact, deaths in Russia out

发表于:2019-01-08 / 阅读(162) / 评论(0) 分类 2006年VOA标准英语(三月)

By Ernest Leong Washington, D.C. 21 August 2006 watch Population report The Population Reference Bureau (P.R.B.) released its annual data sheet on global population growth. The report had some interesting findings. Experts in world population growth

发表于:2019-01-13 / 阅读(200) / 评论(0) 分类 2006年VOA标准英语(八月)

There is a consensus among the delegates and world leaders attending the climate change conference in Copenhagen on the need to cut greenhouse gas emissions and shift to cleaner/more efficient energy. But a research center in Britain is espousing a d

发表于:2019-01-13 / 阅读(101) / 评论(0) 分类 VOA标准英语2009年(十二月)

The so-called one-child policy was brought into law in the late 1970's as a way to limit population growth, given that the economy at the time was just starting to open up to the outside world, and the domestic resources, particularly in urban areas,

发表于:2019-01-19 / 阅读(129) / 评论(0) 分类 2015CRI中国国际广播电台

2004 marks the 10th anniversary of the groundbreaking International Conference on Population and Development (ICPD) in Cairo, Egypt, in 1994. Ten years ago, on the eve of World Population Day, a new campaign was launched to raise awareness of how int

发表于:2019-02-03 / 阅读(134) / 评论(0) 分类 阅读空间

The so-called one-child policy was brought into law in the late 1970's as a way to limit population growth, given that the economy at the time was just starting to open up to the outside world, and the domestic resources, particularly in urban areas,

发表于:2019-02-06 / 阅读(91) / 评论(0) 分类 英语新闻

BEIJING, Mar. 18 (Xinhuanet) -- Urbanization will be a major feature of China's economic growth and continue to gain momentum, Liu He, Party chief of the Development Research Center of the State Council, said on Saturday. At the China Development For

发表于:2019-02-06 / 阅读(116) / 评论(0) 分类 英语新闻

Latest figures show, the number of people in their working-age decreased by over 3 million in 2012, accounting for some 69 percent of China's total population. Ma Jiantang, director of State Statistical Bureau, warns this is a serious issue. It is th

发表于:2019-02-21 / 阅读(97) / 评论(0) 分类 英闻天下

Premier Li Keqiang says China will endeavor to maintain medium-high growth over the long run, and pay attention to the quality and benefits of development. We will follow the vision of innovative coordinated green open and shared development. Develop

发表于:2019-03-04 / 阅读(142) / 评论(0) 分类 2016CRI中国国际广播电台

Rapid Evolution and Population Dynamics 种群(population)指在一定时间内占据一定空间的同种生物的所有个体。种群中的个体并不是机械地集合在一起,而是彼此可以交配,并通过繁殖将各自的基因传给

发表于:2019-03-09 / 阅读(256) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
'Umarāb
absolute muscle strength
air discharge duct
anabolic pathway
annual landing
area germinativa
arraignments
Asian carp
atomic safety and licensing appeal boards
AXC
banganga
bathyraja matsubarai
baudot duplex
be unable to hear oneself think
bodily harm
Bywaters' syndrome
cafe creme
chelate formation
clemmey
coal powdered
coefficient of daily necessities
collapsing strength
corrosion form
Cyclozoonosis
deferred revenue expenditure
double-pass monochromator
dromomane
experimental arrangement
finlandia
giedion
Guatrache
HKJA
Hvidbjerg
Isogamet
keep full sails
Kuchuk
lead tetraborate
leading particulars
liechtensteins
light valve shutter
logic value
lustrelessness
Maratism
mesophytic habitat
molinar
mono-pulser
Monotropaceae
moschorhinids
mycosphaerella cryptomeriae
NANB
nitro-erythritol
ofa
orthite-gneiss
Oslob
otem
Oxbridge
P-Celtic
Peltoboykinia
peritrichs
phaeolus schweinitzii
phlebitis portalis
private affairs
punching machine auto-feeder
put a
railway grand division
recursive solution
redefections
redistilled water
refeeding gynecomastia
Rielves
righting arms & moments
rising hopper feed
safety radiotelephone certificate
sash staff
Schnabelwaid
shieldmaidens
Shikamachi
shipyard portal crane
silvie
sleeve Pekingese
solid manure
spadassin
Spirochaeta refringens
stickjaw
symbol-worship
tailless wing plane
take someone's word for it
tenella
Terebellidae
Ternstroemia gymnanthera
tilt bady
time allotment
tracking section
twist wood
uk sport
underearth-wire finder
undistained
usually
Valsalva manoeuvre
vietnamese-american
woolly-head
wyre