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
-poleis
acid anthracene brown dyes
Al Qawz
Alarup
allmouths
anostosis
arcuate artery
automatic reinvestment
bellino
bero
bridge configuration
broadmead
bush poles
cappriloquism
carbon-graphite antifriction material
carkhuff
CH length
chlorpheniramine maleates
classical ballets
crab bail ladle
crypto
data bit period
Death Valley
debtorship
deep-discount
differential coding
Dioctyi-medoforte
Dirofilaria repens
Dolzhanskaya
draggability
el-guindi
entrepreneurship
epiocular
epiphenomenons
evaporative pollutants
exomion
functional modules
genus Cucurbita
Glory of Russia, Cape
grisea
halometallate
hammer slag
hand-started engine
Himalaya honeysuckle
horseriders
housebotes
Ilad
injection timing
intonation patterns
irinic
jeyes
just the other way
kamila
kottak
life saving equipment
lipolytic bacterium
loading berm
m'luds
make an ally of
measurement comparison buoy
mecholin
Mediterranean vegetation
methallylescaline
molybdenum polution
Morgagni's tubercles
neutron absorption rate
newer-fangled
non-politician
nps.gov
ornithoides
partial-thickness(burn)
passive component
phonogrammes
photo effect
primary pulmonary hypertension syndrome
pyroligneous vinegar
radiographic sensitivity
reference to an element of structure
respiration heat
rotatory polarized light
Salvia keitaoensis
sea level cosmic rays
seismic analyzer
snap hammer
sparves
sportster
standpoint
super acidic catalyst
system timer task
tapered wage increase
technopreneurs
thin-film emiconductor
transfer orbit spin stabilization
Trouton's ratio
turf-roofeds
understored
unleafed
vena intermedia cubiti
video text
weighted-count
wet macular degeneration
Wijs iodine number