组织培养生长物刺激作用

[00:00.00]UNIT14 [00:12.13]Future or Fantasy? [00:15.30]What will our world be like [00:18.80]in the future? Can we [00:20.45]look ahead twenty five years [00:22.30]and dream about the transformations [00:24.60]that will take place? [00:26.03]The sch

发表于:2018-11-30 / 阅读(160) / 评论(0) 分类 最新15篇文章贯通英语四级词汇

This is the VOA Special English Agriculture Report. Mulch is material spread over soil. It protects against wind and rain damage. It can also limit weed growth. Finding materials for organic mulch can be easy. Small pieces of tree bark or cut up lea

发表于:2018-12-07 / 阅读(77) / 评论(0) 分类 VOA慢速英语2009年(六)月

00:05.00]5 有用的东西 [00:10.00]A What things do Mary and Peter need to lay the tables? [00:16.78]Mary和Peter要摆什么在桌子上? [00:23.56]Mary needs some knives and forks. [00:27.83]Mary要摆一些刀子和叉子。 [00:32.10]She also needs some plates. [00:3

发表于:2018-12-13 / 阅读(178) / 评论(0) 分类 小学英语深圳双语版六年级

Mental Stimulation Might Cut Dementia Risk People who engage in mentally-stimulating activities over a lifetime have lower levels of a protein in the brain associated with Alzheimer's disease, a new study finds. That supports other research which sug

发表于:2018-12-16 / 阅读(112) / 评论(0) 分类 VOA标准英语2012年(二月)

When humans have a heart attack, heart muscles die after being cut off from their blood supply. But what if the heart could grow new muscle to replace the dead tissue? Some amphibians can regrow body parts, even entire limbs. But humans and other hig

发表于:2018-12-16 / 阅读(504) / 评论(0) 分类 VOA标准英语2011年(三月)

[00:05.75]Last month, scientists announced that they recorded the first detailed maps [00:13.06]of the development of a child's brain between the ages of three and fifteen. [00:19.98]Scientists at the University of California at Los Angeles School of

发表于:2018-12-26 / 阅读(110) / 评论(0) 分类 美国英语听力80篇

今天我们要学的词是 synchronize。 Synchronize的意思是同步,Trump administration proposes to shut down the government-funded telephone time-of-day service, which is also used to synchronize time-keeping devices, 特朗普政府提议关

发表于:2018-12-30 / 阅读(136) / 评论(0) 分类 英语单词荟萃

By Melinda Smith Washington 07 August 2007 Deep Brain Stimulation has been used successfully on patients in advanced stages of Parkinson's disease and other neurological movement disorders such as tremors. The remarkable success of this experimental

发表于:2019-01-07 / 阅读(175) / 评论(0) 分类 2007年VOA标准英语(八月)

Neil: Hello and welcome to 6 Minute English with me, Neil, and a very sad looking Finn. Finn: Hi Neil. Neil: Oh dear, whats wrong Finn? Finn: Its just this beautiful piece of classical music always makes me cry. Neil: Ah I see! Finn is a man who crie

发表于:2019-01-07 / 阅读(146) / 评论(0) 分类 六分钟英语

Little Johnny watched, fascinated, as his mother smoothedcold cream on her face. Why do you do that mommy? he asked. To make myself beautiful, said his mother, who then beganremoving the cream with a tissue. What's the matter? asked Little Johnny. Gi

发表于:2019-01-08 / 阅读(183) / 评论(0) 分类 趣味英语

New Report Finds Agriculture Promotes African Economic Growth A new report says African agriculture can contribute to sustained global economic growth. But it says there must first be greater investment in farming, markets and social development. The

发表于:2019-01-13 / 阅读(122) / 评论(0) 分类 VOA标准英语2012年(三月)

Researchers find no strong evidence that lifestyle changes - like diet, exercise and stimulating the brain - make a big difference in preventing cognitive decline in older people. A new study has failed to find any conclusive evidence that lifestyle

发表于:2019-01-13 / 阅读(121) / 评论(0) 分类 VOA标准英语2010年(六)月

Scientists Regrow Tissue Killed During Heart Attack U.S. scientists have done what was once considered science fiction - regrown heart muscle to replace tissue that was killed off in a heart attack. It's the latest advance in the field of regenerativ

发表于:2019-01-14 / 阅读(124) / 评论(0) 分类 VOA标准英语2012年(二月)

An estimated 20 percent of the population has trouble working with numbers. That's as many as one person in five with some sort of numerical disability. The British researchers are exploring ways to stimulate the brain to improve the ability to under

发表于:2019-01-14 / 阅读(148) / 评论(0) 分类 VOA标准英语2010年(十一)月

Researchers have identified a link between dementia and the brain damage that can occur in older people with high blood pressure and other forms of cardiovascular disease. High blood pressure, high cholesterol, and other conditions that affect blood

发表于:2019-01-14 / 阅读(186) / 评论(0) 分类 VOA标准英语2010年(十一)月

Study: Electric Brain Stimulation Alleviates Some Disorders HOUSTON Modern medicine relies mainly on drugs to cure or alleviate disorders, but for some conditions doctors apply electrical stimulation. The pacemaker, for example, helps weak hearts mai

发表于:2019-01-14 / 阅读(136) / 评论(0) 分类 VOA标准英语2014年(六月)

Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o

发表于:2019-01-30 / 阅读(176) / 评论(0) 分类 60秒科学

AGRICULTURE Report – October 22, 2002: Aquaculture By Gary Garriott This is the VOA Special English Agriculture Report. Aquaculture is the production of food through the controlled growth and harves

发表于:2019-01-30 / 阅读(141) / 评论(0) 分类 农业与发展

By Alex Villarreal Washington, DC 01 February 2008 Medical researchers in Canada say a brain stimulation procedure used to treat people with Parkinson's and other diseases could help restore the memory of dementia patients. The researchers stumbled u

发表于:2019-02-04 / 阅读(158) / 评论(0) 分类 VOA常速英语2008年(二月)

Do do do do do Do do do do Do do do do do Do do do do do Do do do do Do do do do do Was I not enough stimulation Hit by a brake the other day Just when I thought that I'm okay You didn't like my conversation I can't come up with something new It does

发表于:2019-02-20 / 阅读(178) / 评论(0) 分类 英乐时空
学英语单词
activer
alternating accumulator
Andritsana
appendge
asteroseta
Bakéré
bargainees
benthall
bifunctional ion exchanger
billis
biological oxidation
brever
Calamus banlingensis
calcifuges
calker box
canister-cluster
cephalitis meningica
cineesophagography
clearing contract
complex type stress pattern
culture maker
Dakshin Rāmnagar
decompression wave
defence bond
Dehloran
devisable
diesel-electric
diving hat
division of suckers
double volcano
egotudes
embedded OS
end-of-tape mark
ervenka
estatifruticeta
fan shaft bearing
flecce of Stilling
fort frederica national monument
genous
half-side formula
high-density weighting material
Hook-lever
housing loan insurance
imputeth
ingouf
injection orifice
joint strike fighter
junids
kordic algorithm
lament over
lateral cerebral sulci
lattice drainage
legs it
Lenhossek's bundle
light-
magabyte
mail heald
make work rule
mica hematite
narrow-band pulse
neo-conceptual
neriiflorum
omnigendered
oral inflation type lifejacket
oxytetracycline hydrochlorides
pediatric
Pilgram
plasma cell plasmocyte
Plica stapedialis
Principle of Error in Extremes
project manager
pull strength
quasistable isotope
reference chromatogram
retreats
rhizocephalous
Saxifraga subternata
schooldayss
Sciaphila megastyla
screen doors
semiconductor thermocouple
seven-tracks
sheafor
sol-gel method
splenic hematopoiesis
squarciapinoes
statistical bin
stator resistance starting
steel plate door
steep wave front
synthetic steel
system control unit
thinkful
two wheel truck
unlabelled statement
upper atmospheric absorption
Vazosan
vertical take off and landing airplane
volumetric efficiency of mine air
vouch for sb
waldheims
X-plate