演化机制

17.Evolution of sleep Sleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may extend back as far as the reptiles. There is some evidence that the two types of s

发表于:2018-11-27 / 阅读(791) / 评论(0) 分类 新概念优美背诵短文50篇

I learnt all about evolution when I was about ten years old. I remember it clearly. I thought it was amazing. My mind was full of images of strange creatures crawling out of a green, soupy lake. Fish that had somehow developed legs and the ability to

发表于:2018-12-04 / 阅读(185) / 评论(0) 分类 听一分钟英文-E

VOICE ONE: I'm Steve Ember. VOICE TWO: Charles Darwin And I'm Barbara Klein with EXPLORATIONS in VOA Special English. This month is the two hundredth anniversary of the birth of one of the most influential thinkers in science history. Charles Darwin

发表于:2018-12-07 / 阅读(241) / 评论(0) 分类 VOA慢速英语2009年(二)月

Sleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may extend back as far as the reptiles. There is some evide

发表于:2018-12-15 / 阅读(288) / 评论(0) 分类 新东方背诵文选

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Creationists often publish lists of a few dozen scientists who doubt Darwin. So in 2003, the National Center for Science Education put together a list of 200 scientist

发表于:2018-12-24 / 阅读(188) / 评论(0) 分类 Scientific American(二)月

I learnt all about evolution when I was about ten years old. I remember it clearly. I thought it was amazing. My mind was full of images of strange creatures crawling out of a green, soupy lake. Fish that had somehow developed legs and the ability to

发表于:2018-12-26 / 阅读(173) / 评论(0) 分类 纯正英语一分钟

Millions of years ago, the embryo of a distant ancestor of ours would have shared with us many of these features. As well as giving rise to us, it gave rise to all sorts of other creatures. And in tho

发表于:2019-01-02 / 阅读(272) / 评论(0) 分类 生命物语

SCIENCE IN THE NEWS - Evolution and Intelligent Design By Jill Moss Broadcast: Tuesday, March 15, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Sarah Long. VOICE TWO

发表于:2019-01-04 / 阅读(183) / 评论(0) 分类 科技之光

Don Gonyea: After 17 days of skiing, skating, sliding and yes, even a little doping , the Winter Olympics end today. For NPR sports correspondent Tom Goldman, the Turin Games are the seventh Olympic he has covered. Looking back, he has this essay on

发表于:2019-01-04 / 阅读(265) / 评论(0) 分类 2006年NPR美国国家公共电台

We usually think of evolution as something that happens over eons, in remote places where people rarely venture. Not something that happens around the backyard birdfeeder in just a few decades. But a study in the journal Current Biology suggests that

发表于:2019-01-08 / 阅读(219) / 评论(0) 分类 Scientific American(十二)月

Explorations - Great Thinkers: Charles Darwin and Evolution STEVE EMBER: Welcome to Explorations, in VOA Special English. I'm Steve Ember. This week, Barbara Klein and I tell about one of the most influential thinkers in science history. Charles Darw

发表于:2019-01-12 / 阅读(181) / 评论(0) 分类 2011年VOA慢速英语(十一)月

Shaping Human Evolution at the Smithsonian 史密森尼美国博物馆塑造人类进化过程 Welcome to American Mosaic from VOA Learning English. Im June Simms. Today on the show, we visit a museum where art and science help tell the story of huma

发表于:2019-01-12 / 阅读(176) / 评论(0) 分类 2014年VOA慢速英语(四)月

ROBERT SIEGEL, HOST: Biologist Jonathan Losos and I have at least one thing in common - we were both blown away by the late paleontologist Stephen Jay Gould's 1989 book Wonderful Life. Gould saw evolution as being all about odd contingencies, acciden

发表于:2019-01-16 / 阅读(230) / 评论(0) 分类 2017年NPR美国国家公共电台9月

Decades After An Iconic Protest, Tommie Smith Has Something Else On His Min play pause stop mute unmute max volume 00:0004:48repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update

发表于:2019-01-16 / 阅读(184) / 评论(0) 分类 2016年NPR美国国家公共电台9月

CDMA 码分多址 WCDMA 宽带码分多址 TD-SCDMA 时分同步码分多址接入 churn rate 客户流失率 walled garden model 高墙式花园模式 POC 手机对讲 IM service instant messaging service 即时通讯服务 bundle service 捆绑式服

发表于:2019-01-17 / 阅读(172) / 评论(0) 分类 英文语法词汇

Sir David Attenborough has been making natural history films for the BBC for over 50 years. In this time, he, perhaps more than anyone alive, has seen evidence for evolution in the stunning diversity of nature. To find and film animals. This is the b

发表于:2019-01-22 / 阅读(212) / 评论(0) 分类 自然百科2010年

Backyard Feeders Driving Bird Evolution A study in the journal Current Biology finds that backyard bird feeders in Britain are responsible for splitting central European blackcap warblers into two distinct populations that may be on their way to beco

发表于:2019-01-30 / 阅读(386) / 评论(0) 分类 60秒科学

Multi-media website explores human evolution Rosanne Skirble | Washington, DC 07 May 2010 'What's Hot in Human Origins' keeps you up-to-date on recent studies and research in the field. The human origins website at www.humanorgins.si.edu poses the ag

发表于:2019-02-02 / 阅读(188) / 评论(0) 分类 VOA标准英语2010年(五)月

One day a 6 year old girl was sitting in the classroom. The teacher was going to explain evolution to the children. The teacher asked a little boy: Tommy do you see the tree outside? Tommy: Yes. Teacher: Tommy, do you see the grass outside? Tommy: Ye

发表于:2019-02-08 / 阅读(166) / 评论(0) 分类 趣味英语

Lord Mayor of the City of London: China's Stock Market "Hiccup" Part of Market Evolution In a press briefing with journalists on his planned visit to China next week, the Lord Mayor says it is a common episode in any emerging market to have overb

发表于:2019-02-13 / 阅读(224) / 评论(0) 分类 2015CRI中国国际广播电台
学英语单词
allyl alcohol ester
anti-retrovirals
armored fabric
atmospheric pollution monitoring
auto-suggestion
autocombustion
biostratigraphies
bivariate stochastic process
boppa
byck
close-loop system
closed rule
collose
Condy
consumption of capital
corynebacteria
cumulative audience
cupressus sempervirenss
curvilinear shear flow
diagnosis of a two-channel batch system
dibenzothiazine
dispatch bill
dynamic characteristic curve
Eastern Abnaki
EFRUG (European fast reactor utilities group)
electric equipment for tropical use
emerg
end point rigidity
endophytic oviposition
epidemic benign dry pleurisy
fetal endocrine function
finned array
foldamer
freight invoice
guaranty bond
high ratio shortening
interactive learning
involute gear pump
island-hops
jodorowsky
karyopyknosis
kink discharge
lady-in-waiting
launch mode
lock carton
lowergrade
Lysenko
malplaquets
missioneer
mobile cecum
model membrane
montjoy
nafka gum
Nakasone Yasuhiro
nonparametric estimation
off-coloured
oligomer light-emitting material
original date
out of all proportion to
overscented
pile fender
preached to the choir
prisoner of war censorship
problem structuring
psygnoses
pumping temperature
rectal stricturotomy
resolvably
Samburu Hills
scan sheet
Schenkel doubler
Schischkinia albispina
sea water salinity gradient energy generation
semi-closed gas turbine plant
shitdick
Si-gallium arsenide solar cell
skier
sound decay curve
standing bobby
State-owned firm
steering wheel hub
stomatoloscope
strategy and tactics
structure invariant
system oriented
teletypewriter 20-ma current loop
temporary payment
thirdorder stream
tolerable limit
transportedness
tumultuous disturbance
tynsel
type of grammar
vitamin
Vung Tau
weigela floridas
weld period
Westinghouse Electric Corporation
wilpon
y-front
zieosis
zinc concentrate