单词:monopodial fetus
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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
[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
[00:05.49]Why are some people left-handed? [00:09.09]Scientists have been trying to answer that question for many years. [00:14.32]Research has shown that ninety percent of people naturally use their right hands for most tasks. [00:22.94]But hundreds
AS IT IS 2016-07-01 Report: Women Prisoners Tortured in Mexico 墨西哥监狱虐待女囚犯 Five years ago, police stopped Veronica Razo on a street in Mexico City and took her to federal prison. She was beaten, tortured with electrical shocks and
AS IT IS 2016-04-07 Cruz's Victory Slows Trump's Path 克鲁兹胜利使特朗普受阻 With a victory in the state of Wisconsin, Texas Senator Ted Cruz slowed Donald Trumps push to capture the Republican Partys presidential nomination. Cruz called h
Update: Breakthrough in Fighting Zika From VOA Learning English, this is the Health Lifestyle report. Researches have reported a breakthrough in the search for a treatment for Zika virus. To better understand this report, you will need to know the fo
Almost all animals with a spine yawn.Penguins do it as a mating ritual,snakes do it to realign their jaws after a meal and guinea pigs do it to display anger,So why exactly do humans yawn?And is yawning actually contagious? 几乎所有的有脊椎动物
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
Indias sex ratio is getting worse. The trend can be reversed. 印度的性别比例扭曲越加严重,这个趋势能够逆转 THE news from Indias 2011 census is almost all heartening. Literacy is up; life expectancy is up;family size is stabilisi
JUDY WOODRUFF: Just weeks ago, hardly anyone in the U.S. knew what the Zika virus was, much less worried about it. But the World Health Organization's warning today put the Americas, including the U.S., on new notice. And, suddenly, a mosquito-borne
SCIENCE IN THE NEWS - Study Links Stress Early in Pregnancy to a Greater Risk of Losing BabyBy Broadcast: Tuesday, March 21, 2006 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English.
A woman from China's central Hunan province recently set a Guinness World Record with her 17-month-long--pregnancy, local media reported on Aug. 16. 据当地媒体8月16日报道,中国中部地区湖南省一女子因怀胎17个月,从而创下了
Hi,everyone. I'm Asieh Namdar at the CNN.com newsroom in Atlanta. Here's a look at what's happening Now In The News. New information out of Jacksonville, North Carolina, Marine Cpl. Cesar Armando Laurean is now the prime suspect in the murder of lan
We all know we shouldn't eat dirt, but we do it anyway. Mostly not on purpose dirt gets into our bodies all day, every day, whether we want it to or not. It's understandably difficult to figure out exactly how much is getting in, but that might be be
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
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
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
本期内容: The World Health Organisation warned that Zika, a mosquito-borne virus linked to brain deformation in human fetuses, is likely to spread to every country in the Americas except Canada and Chile. Brazil has reported 3,893 cases of micr
People who habitually live at altitude have often spent thousands of years developing disproportionately large chests and lungs, increasing their density of oxygen-bearing red blood cells by almost a third, though there are limits to how much thicken