普-杰二氏综合征

Marcus Pembrey is one of a select band of scientists, a band of scientists who are daring to challenge an orthodoxy . They believe the lives of our parents, grandparents, and even our great grandparen

发表于:2018-12-07 / 阅读(143) / 评论(0) 分类 基因外遗传现象

After we had seen how relatively easy it was to change the switches in mouse embryos, we thought that perhaps the same could be true of human embryos. In IVF, you also have the embryo for a brief peri

发表于:2018-12-07 / 阅读(143) / 评论(0) 分类 基因外遗传现象

If inheritance was not just about DNA, if these gene switches were so important, just what could turn them on or off? Stephanie and Emend Mullins have two children, Karen and Charlotte. When we were t

发表于:2018-12-07 / 阅读(167) / 评论(0) 分类 基因外遗传现象

...lead to the end of diseases like cancer... Alzheimer's , Parkinson's , diabetes. The list is endless. We were thinking of genes in a very mechanical way. We were thinking of them just in terms of t

发表于:2018-12-07 / 阅读(182) / 评论(0) 分类 基因外遗传现象

Named after Henry Angelman, the pediatrician who first described Angelman syndrome. He referred to them as happy puppet children because it described, to some extent, the features. They have a rather

发表于:2018-12-07 / 阅读(148) / 评论(0) 分类 基因外遗传现象

Kenyas Ol Pejeta Conservancy Driving Animals Away from Humans 肯尼亚Ol Pejeta保护区保护动物远离人类 LAIKIPIA, KENYA In Laikipia, Kenyan rangers are driving game farther into a 36,000 hectare conservancy to protect the animals from confl

发表于:2018-12-08 / 阅读(138) / 评论(0) 分类 VOA标准英语2015年(二月)

Ban Calls for Renewed Effort to Wipe Out Polio Creating a polio-free world - that is what international leaders gathered in New York said they hope to do. U.N. Secretary General Ban Ki-Moon expressed his delight at the new promises by member states t

发表于:2018-12-16 / 阅读(125) / 评论(0) 分类 VOA标准英语2012年(九月)

By Mike O'Sullivan Los Angeles 09 May 2007 Lisa Dunn-Dern, author The books of children's author Lisa Dunn-Dern portray an interracial family like her own. Her second book has just been released, and as Mike O'Sullivan reports, the author is expandin

发表于:2019-01-07 / 阅读(182) / 评论(0) 分类 2007年VOA标准英语(五月)

By Paul Sisco Washington, DC 05 January 2007 watch Masterpiece or Fake Art report The Authentic Project finds another fascinating use for digital technology. Researchers are using it to understand the brains of the great artists, and in so doing the

发表于:2019-01-09 / 阅读(172) / 评论(0) 分类 2007年VOA标准英语(一月)

Automatic US Spending Cuts Loom Under current U.S. law, automatic cuts to domestic programs and national defense will begin in 2013, because a congressional committee failed to agree on trimming Americas federal deficit. Already, many lawmakers say t

发表于:2019-01-10 / 阅读(200) / 评论(0) 分类 VOA标准英语2011年(十一月)

By Stephanie Ho Washington 11 February 2006 The issue of lobbying, which is the process of trying to influence policy-makers in favor of a specific cause, has been under intense scrutiny in the United

发表于:2019-01-10 / 阅读(219) / 评论(0) 分类 2006年VOA标准英语(二月)

EconomicsReport-Greece'sDebtCrisisandtheFutureofEurope 经济报道 - 希腊债务危机和欧洲未来息息相关 This is the VOA Special English Economics Report. 这里是美国之音慢速英语经济报道。 Finance ministers from the euro are

发表于:2019-01-12 / 阅读(121) / 评论(0) 分类 2011年VOA慢速英语(九)月

By Carol Pearson Washington, DC 20 September 2006 watch Ecoli report US health organizations are asking public to avoid eating fresh spinach U.S. health officials are still trying to pinpoint the source of an E. coli outbreak that has caused at leas

发表于:2019-01-12 / 阅读(188) / 评论(0) 分类 2006年VOA标准英语(九月)

By Barry Newhouse Bangkok 01 August 2006 Tourism representatives in Thailand have expressed concern after last week's first reported bird flu death in the country in seven months. Tourism is critical to the Thai economy and the industry is urging th

发表于:2019-01-13 / 阅读(184) / 评论(0) 分类 2006年VOA标准英语(八月)

By Lisa McAdams Moscow 22 February 2006 Vladimir Putin Russian President Vladimir Putin says he is still hopeful a positive result can be reached with Iran concerning the international dispute over it

发表于:2019-01-13 / 阅读(218) / 评论(0) 分类 2006年VOA标准英语(二月)

Work crews have started paving Southern Sudan's first highway, which will connect the new nation to the international community. This highway brings the south one step closer to full independence. A military band welcomed Southern Sudan's president,

发表于:2019-01-14 / 阅读(162) / 评论(0) 分类 VOA标准英语2011年(二月)

欧洲青少年的体重在过去15年里一直呈不断增加的趋势。目前,专家们将注意力集中在了由肥胖而引起的大量健康问题。 Around half a million children in Europe are suffering classic health problems of the middl

发表于:2019-02-01 / 阅读(141) / 评论(0) 分类 阅读空间

A Very Outgoing Person 小丫:第三人称单数对中国人来讲是最容易犯错的,因为中文里面没有这一说!从小我们学英语就背:she和he作主语时,谓语动词要用第三人称单数。说起来简单,但背了这么

发表于:2019-02-03 / 阅读(168) / 评论(0) 分类 阅读空间

By Paul Sisco Washington, DC 12 February 2007 watch Autism report A new survey in the United States indicates that approximately one in every 150 children in the country has autism, suggesting the condition may be more common than previously thought

发表于:2019-02-06 / 阅读(159) / 评论(0) 分类 2007年VOA标准英语(二月)

By Phuong Tran Dakar 19 January 2007 Leaders have gathered for the 31st summit of the Economic Community of West African States on Friday. Leading the agenda was the deadlock in the U.N.-backed peace process in the Ivory Coast. Phuong Tran reports f

发表于:2019-02-07 / 阅读(162) / 评论(0) 分类 2007年VOA标准英语(一月)
学英语单词
armanite
asymmetric point
asymmetrical ripple mark
base pairing in dna
battle bowler
besetters
bicyclian
binary digital computer
bisphosphoglycerate
box pin
braking deceleration
brown smoke
butrym
cleaning doctor
code trace
conventional obligations
copy-pastes
Cord Sets
crescent blade section
danger meter
devenport
Digitaria stewartiana
dsssl syntax checker
euryhaline plant
evaporograph
family Actinomycetaceae
first-come
florist
fractional error
furnace butt-weld pipe
gotsch
Groove-Billed
haire mai
hand-restoring
Hench-Rosenberg syndrome
herba lophatheri
howster
inputoutput equipment
insight learning
interactive interrupter
intertank transfer process
Jabneel
janhonens
kaplan groups
killed lime
Lamiide
Llangynin
load angle
Loran simulator
Loughlin
low-water fuel cutoff
magic eye
maryan
mechanism of ionic conduction
microwave hygrometer
mouth-organ
musculi brachiocapsularis
neotoxoptera violae
net-herd
nonconsciousness
not-knowings
obligatory military service
Old Ukrainian
ortho-
overhow
overstrew
pagehood
planer-tree
plica semilunaris conjunctiv?
positive-ion accelerator
propeller-water turbine
Pöyrisjärvi
quasi-molecular state
Quoc-ngu
rockfish
rolling-element bearing
rust bloom
Samuel F. B. Morse
saturation remanent flux
sector condu-ctor
self-filtration
shipt
siding machine
space alien
spherical float
split-second operating lever
sublicensees
subsidiary unit
switching impulse voltage withstand test
tagliarine
taiga landscape
tongo
trail-bike
tribalisations
trichuriases
unfocalized
uninsulated tube
urinary schistosomiasis
Usina
Wandering River
way base management system
wedged penetrator