胚体

Health nbsp; Economics The big story for Washington for 2002 is going to be the November elections. And while that’s a long way off for the rest of the country, it’s very much on politicians- mind

发表于:2018-11-28 / 阅读(209) / 评论(0) 分类 疯狂英语2002年

[ti:UNIT 2 Plant a Plant! Lesson 12: Pretty Little Plant] [0:00.241]UNIT 2 第二单元 [0:01.877]Plant a Plant! 培育植物 [0:03.754]Lesson 12: 第12课: [0:05.391]Pretty Little Plant 漂亮的小植物 [0:08.856]You need two groups to sing this

发表于:2018-12-13 / 阅读(215) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

[ti:UNIT 2 Plant a Plant! Lesson 10: Plant Parts] [0:00.363]UNIT 2 第二单元 [0:02.105]Plant a Plant! 培育植物 [0:03.775]Lesson 10: 第10课: [0:05.444]Plant Parts 植物的组成部分 [0:07.100]THINK ABOUT IT! 想一想 [0:08.539]How many

发表于:2018-12-13 / 阅读(235) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

[ti:UNIT 2 Plant a Plant! Lesson 13: Why Are Plants Important?] [0:00.680]UNIT 2 第二单元 [0:02.359]Plant a Plant! 培育植物 [0:04.357]Lesson 13: 第13课: [0:06.716]Why Are Plants Important? 为什么植物很重要? [0:09.689]THINK ABOUT

发表于:2018-12-13 / 阅读(199) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

[ti:UNIT 2 Plant a Plant! Lesson 14: People and Plants] [0:00.244]UNIT 2 第二单元 [0:01.985]Plant a Plant! 培育植物 [0:03.795]Lesson 14: 第14课: [0:06.092]People and Plants 人和植物 [0:08.334]THINK ABOUT IT! 想一想 [0:09.663]Which

发表于:2018-12-13 / 阅读(210) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

[ti:UNIT 2 Plant a Plant! Lesson 9: How Does a Plant Grow?] [0:00.532]UNIT 2 第二单元 [0:01.935]Lessons 9~16 第9~16课 [0:04.780]Plant a Plant! 培育植物! [0:06.829]You Will Learn 你将学到 [0:09.105]Functions 实际应用 [0:10.888]Ta

发表于:2018-12-13 / 阅读(245) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

[ti:UNIT 2 Plant a Plant! Lesson 11: Look after Your Plant!] [0:00.243]UNIT 2 第二单元 [0:02.058]Plant a Plant! 培育植物 [0:03.833]Lesson 11: 第11课: [0:05.326]Look after Your Plant! 照顾你的植物! [0:08.070]Has your seed sprouted?

发表于:2018-12-13 / 阅读(231) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

Agricultural officials say they think an organic farm in northern Germany was the source of the deadly E. coli outbreak that has sickened more than 2,000 people in Europe. Twenty-two people have died. Investigators traced the bacteria to beansprouts

发表于:2018-12-17 / 阅读(152) / 评论(0) 分类 2011年NPR美国国家公共电台6月

In a landmark development within stem cell research, scientists say theyve used a cloning technique to make embryonic stem cells that match a patients DNA. The journal Nature highlights a study that shows the potential for using the technology to rep

发表于:2018-12-17 / 阅读(267) / 评论(0) 分类 2011年NPR美国国家公共电台10月

HOUSTON, Jan. 8 (Xinhua) -- Fire broke out at a nuclear power plant Tuesday in the U.S. state of Texas, forcing one of two units to be shut down, U.S. media reported. No injuries were reported in the fire, which erupted in the Unit 2 main transformer

发表于:2019-01-07 / 阅读(155) / 评论(0) 分类 英语新闻

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? One of the dreams of biomedical scientists is to be able to transform adult cells into other kinds of cells. And thus avoid some of the ethical concerns of working with

发表于:2019-01-08 / 阅读(176) / 评论(0) 分类 Scientific American(十一)月

President Obama says a preliminary agreement reached today with Russian President Dmitry Medvedev is an important step toward increasing nuclear security. We have signed a joint understanding for a follow-on treaty to the START agreement that will r

发表于:2019-01-08 / 阅读(145) / 评论(0) 分类 2009年NPR美国国家公共电台7月

HEALTH REPORT - New Embryonic Stem Cell Lines Developed for Researchers By Paul Thompson Broadcast: Wednesday, August 11, 2004 This is Gwen Outen with the VOA Special English Health Report. Researcher

发表于:2019-01-08 / 阅读(168) / 评论(0) 分类 健康与经济

This is the VOA Special English Health Report. Bethesda, Maryland, near Washington, D.C., is home to the National Institutes of Health. N.I.H. calls itself the Nation's Medical Research Agency. But it supports research worldwide with its budget of a

发表于:2019-01-11 / 阅读(147) / 评论(0) 分类 VOA慢速英语2008年(十一)月

AS IT IS 2015-11-02 Can Fish Teach Humans to Regrow Teeth? 人类能学习鱼类的牙齿再生术么? Most people are born with two sets of teeth. They use baby teeth to break down food as children. As they become adults, the baby teeth are replaced

发表于:2019-01-12 / 阅读(110) / 评论(0) 分类 2015年VOA慢速英语(十一)月

By Ted Landphair Washington 26 July 2007 For a second time in a year, President Bush has vetoed a bill that would have sanctioned federally funded stem cell research using human embryos. His stance reflects conservatives' view that destroying life to

发表于:2019-01-12 / 阅读(181) / 评论(0) 分类 2007年VOA标准英语(七月)

An end to grey hair and crows-feet could be just 10 years away after scientists showed 科学家发现,动物的衰老过程有可能逆转。 it is possible to reverse ageing in animals. 从此以后,可能仅需10年,人类就可以告别白发

发表于:2019-02-01 / 阅读(145) / 评论(0) 分类 趣味英语

Finding a Healthier Lifestyle - Committing to Change Everyone wants to live a healthier lifestyle and everyone wants to look better in their swimsuit. However, many people don't know where to begin or what questions to ask. Six months ago I was in th

发表于:2019-02-08 / 阅读(198) / 评论(0) 分类 阅读空间

Jack and the Bean Plant I Once there was a poor woman. She had one son, whose name was Jack. Jack had no father; a giant had killed him. Jack's mother had one cow, whose milk they sold. They had no money but the money which they got for the milk. One

发表于:2019-02-09 / 阅读(182) / 评论(0) 分类 趣味英语

WASHINGTON, April 16 (Xinhua) -- Researchers at the University of Colorado (CU) have found that lack of a specific gene interrupts neural tube closure, a condition that can cause death or paralysis. The study was the cover story this week in the jour

发表于:2019-02-18 / 阅读(167) / 评论(0) 分类 英语新闻
学英语单词
Abos
acetoacetamide
airborne digital computer
Alaafin
assembled source statement
auschwitzs
c(a)esium frequency standard
calls out
Calvin cycle
Child Supervision
clavicembalist
corporate equity securities
corporifies
crystallographic slip mechanism
cutter-arbor
deneroes
digital images
discompassionate
diviseth
embadomonas chinensis
explosion volcano
fall off the wagon
ferrite-excited machine
fibrinolytic therapy
forcingly
fuisum
gem-pure
Gilbertown
Glock 17
gouty
greyish-whites
heat regenerator
human resources
idvd
impedible
intercatilaginous
inverse plasmon scattering
keyword-in-context index
korga
La Cavalerie
large linear system
laser communicator
linament
lobaplatin
logomania
low-efficiency
lube fraction
macroelement
Madoko
mammoth structure
Markov inequality
matrix type structure
mesioangularly
methicilin
misfuelling
nanograys
nanosomia deformans
normal performance
normalcies
nottaway
nozzle flow characteristic
Olduvai Gorge
Ph. B.
phonoarthrogram
phospholipases
Pirineus, Sa.dos
planimetric position
Plantago depressa
Platanthera longicalcarata
polypuses
polyubiquitinylates
pool stock
preparatory command
presensations
product planning and development
profile irregularity
proper mucous membrane
publicity photograph
pulsation hypothesis
put this show on the road
replacement lambs and yearlings
rockrose
samarium(ii) iodide
sideling placed blade
socialist-minded
special fertilizer for flowers
squab-chick
squash vines
standard system program
stock arrange ( ment )
string figure
struggler
supermales
suprarenalin
systematic screw series experiments
taper bevel
thioalcohol
time-horizon
time-lapse logging
Tullydonnel
variable speed turbine
white diarrhea of chicks