胎儿生长迟缓

The Mercury Mess By Samantha Levine / 2004, as first appeared in U.S. News nbsp; What are the dangers of mercury in fish? Can the mercury mess be cleaned up? 1 Are these fish safe to eat?” It’s a

发表于:2018-12-19 / 阅读(95) / 评论(0) 分类 彭蒙惠英语

Rare but Deadly By Susan Brink /2005, U.S. News World Report . All rights reserved with permission. Distributed by Tribune Media Services International. Simple, cheap blood tests could save thousands

发表于:2018-12-19 / 阅读(137) / 评论(0) 分类 彭蒙惠英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. This will just take a minute. Pregnant women shouldn't drink. It's become gospel, because of the danger of fetal alcohol spectrum disorder. Alcohol can disturb the normal development

发表于:2018-12-24 / 阅读(145) / 评论(0) 分类 Scientific American(三)月

Every week, more children arrive to work in the hundreds of primitive mines in the bush. Here they endure long hours at dangerous jobs, wringing flecks of gold from the dirt with mercury. One of them is a 12-year-old boy named Saliou. Momodou is just

发表于:2018-12-26 / 阅读(103) / 评论(0) 分类 自然百科2016年

[00:07.34]Last Tuesday was World Population Day. [00:12.98]The message this year was Saving Women's Livers. [00:18.91]The director of the United Nations Population Fund, [00:24.27]Nafis Sadik,released a statement in ovservance of the day. [00:30.59]D

发表于:2018-12-26 / 阅读(67) / 评论(0) 分类 美国英语听力80篇

People start stereotyping early. Even toddlers react positively to members of their own race, but often distrust those from different groups. The seeds of racism are planted in most everyone. Everyone, that is, except people with a rare genetic condi

发表于:2019-01-02 / 阅读(120) / 评论(0) 分类 60秒科学

By Lisa Schlein The UN Children's Fund, UNICEF, says Iodine Deficiency Disorders, which cause mental retardation, are a huge problem in Europe and Central Asia. UNICEF says this disorder can be solved

发表于:2019-01-03 / 阅读(101) / 评论(0) 分类 VOA2004(下)--健康科技

People start stereotyping early. Even toddlers react positively to members of their own race, but often distrust those from different groups. The seeds of racism are planted in most everyone. Everyone, that is, except people with a rare genetic condi

发表于:2019-01-08 / 阅读(125) / 评论(0) 分类 Scientific American(四)月

Time now for StoryCorps. This oral history project is traveling the country, collecting interviews between friends and families. Today we hear from a daughter and her father. --My name is David Warm, I'm 51 years old. --My name is Mary Warm, and I'm

发表于:2019-01-08 / 阅读(175) / 评论(0) 分类 2006年NPR美国国家公共电台

This is the VOA Special English Health Report. Deep inside each cell in our body is all the genetic information needed for life. Human genes are normally organized along forty-six chromosomes -- twenty-three from each parent. David Petersohn of Libe

发表于:2019-01-11 / 阅读(177) / 评论(0) 分类 VOA慢速英语2008年(九)月

This is the VOA Special English Health Report. Human genes are normally organized along forty-six chromosomes in our cells, twenty-three from each parent. A school for people with Down syndrome in Mexico City But some people are born with an extra c

发表于:2019-01-11 / 阅读(73) / 评论(0) 分类 VOA慢速英语2009年(九)月

By Carol Pearson Washington 14 January 2008 For years autism has baffled researchers and devastated families. Autism typically appears in the first three years of life. Symptoms include problems with communication, difficulty forming relationships an

发表于:2019-01-13 / 阅读(80) / 评论(0) 分类 VOA标准英语2008年(一月)

The Lacandon are direct descendants of the Maya peoples who live in the jungles of the Mexican state of Chiapas. Until the mid-20th century, they had little contact with the outside world. As a result, the indigenous group was almost extinct. Today

发表于:2019-01-13 / 阅读(84) / 评论(0) 分类 VOA标准英语2009年(五月)

From the CNN Center in Atlanta. I'm Nicole Lapin. Here's a look at what's happening NOW IN THE NEWS. We now have a name and a face but still no motive for the deadly shooting at Northern Illinois University. A law enforcement source identified the s

发表于:2019-01-26 / 阅读(147) / 评论(0) 分类 商业报道2008年(二)月

我们何时开始做梦

发表于:2019-02-09 / 阅读(98) / 评论(0) 分类 实用英语

From VOA Learning English, this is the Health Lifestyle report. Most healthy children between the ages of four and 10 grow about five centimeters a year. Parents often notice this growth by how quickly their children grow out of their clothes and sho

发表于:2019-02-09 / 阅读(80) / 评论(0) 分类 2019年VOA慢速英语(一)月

雅思考试写作的12大万能理由和部分写作思路 1 方便 convenience 2 情感 feeling(or sensibility) 3 经验 experience 4 成就 achievement 5 效率 efficiency 6 健康 health 7 节俭 thrift(or save money) 8 安全 safety 9 性格培养

发表于:2019-02-13 / 阅读(119) / 评论(0) 分类 雅思英语

MELISSA BLOCK, HOST: El Savador's highest court has ruled that a pregnant woman, whose health is expected to deteriorate as her pregnancy continues, cannot undergo an abortion. The 22-year-old, who goes by the name Beatriz to protect her identity, ha

发表于:2019-02-16 / 阅读(112) / 评论(0) 分类 英语语言学习

Sex selection 性别选择 Cat got your tongue? 哑巴啦? Aug 6th 2011 | from the print edition Unnatural Selection: Choosing Boys Over Girls, and the Consequences of a World Full of Men. By Mara Hvistendahl. Public Affairs; 314 pages; $26.99 and

发表于:2019-02-17 / 阅读(79) / 评论(0) 分类 经济学人综合

这是一个令人心酸的故事,每个人都有权憧景新的生活,但年仅八岁的Philip除外,因为他缺乏憧憬未来的必要条件一个健康鲜活的生命,所以看看他的new life愿望吧,你一定被会为你的幸福感动

发表于:2019-02-20 / 阅读(81) / 评论(0) 分类 英语美文
学英语单词
abstractionists
acoustic surface-wave signal processing
ad daww
aeolian clastic rock
applied algebra
bend one's steps to
bruise check
button pusher
caffeoyl guinic acid
catching my drift
cernunnos
channel frith
chronosphygmograpy
cirque niveau
cowpylle
cracking-pressure
CSGBM
dermitis
descending fiber
Dieffenbach's amputation
direct and overdrive clutch hub
disulphonate
endocrinologist
EOIs
ex professo
Falcatifolium
fatty acid series
FIA analysis
flewsey
geeres
gelatin relief
glow discharge cleaning
GMWU
grain column
grass hockey
heavy-duty transport machine
Hohenaspe
honey yellow
in default of payment
inclined chord of truss
inputting
interradial plate
Jew's-harp
Johanniskirchen
knowledge-based test
lay one's account with
Ledercort
lubricating oil consumption rate
Lutembacher's syndrome
massageer
massive planting
medical officer
Meiogyne kwangtungensis
message switching multiplexer
modulus attenuation
moor berries
Nans-les-Pins
neutral judge
normal histology
not called for
odontoblasic
oil production curve
oligoprobe
Orius
owner-occupants
peplow
physical characteristic
positive-pressure
price relative of fixed base
primary distillation tower
reaching out for
recuperative air heater
regan
retaining ring for tyre
rock plant
rolled into
Rottweil
S. M. B.
SCST
severities
signal distance
somn-
sparkiest
ssq
steines
stripper plate
sunhills
surfacial layer density
television sweeper
timber deck
tiners
trans-shippeds
trichromatic hypothesis
unappreciation
vacuolizations
vapour growth
Waechtler's gold purple
Wallenfels
wicksons
working time between trains
x-ray fluoroscopic inspection
yes - or - no question