单词:parasitic 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
Fruit Flies Love Alcohol! 果蝇喜欢酒精! When human females are pregnant, theyre advised to stay away from alcohol, for fear of harming the fetus. And most parents refrain from giving their infants bottles full of whiskey or beer, for obvious
Amber: Hello, I'm Amber, and youre listening to bbclearningenglish.com. Today, since we are a website, we join in celebrations for the 15th birthday of the World Wide Web! The World Wide Web has changed the lifestyle and working environment of people
Fruit flies are pretty small. But they laugh at a species of fly recently discovered in Thailand. Dubbed Euryplatea nanaknihali, this member of the phorid fly family is less than half a millimeter longa fifth the size of a fruit fly. But before you o
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 2015-10-09 Belarus Writer Gets Nobel Literature Prize 白俄罗斯作家获得诺贝尔文学奖 Svetlana Alexievich of Belarus has won the Nobel Prize in Literature. The Nobel Prize committee in Stockholm, Sweden, called her writings a monu
By Carol Pearson Washington, D.C. 26 June 2007 Smallpox was the first infectious disease ever to be eradicated worldwide. But now, thanks to a two-decade campaign, guinea worm disease is about to be eradicated as well. Unlike smallpox, guinea worm di
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
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
-Howard: One of us, one of us. 入伙万岁!入伙万岁! -Penny: Well, what a thrill. thrill: 激动 多振奋人呀! -Sheldon: You're sitting in my spot. 你坐我位置上了。 -Penny: Oh, jeez, you've got to be kidding me. jeez: 呀 天呀,
所谓复杂的定语从句,是指一个句子带有两个或两个以上定语从句的结构。这类定语从句在结构上与先行词的关系比较复杂,有如下几种形式: 1.自由式定语从句 自由式定语从句是指一个句子
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
有人说过:得句型结构得托福阅读。在这篇文章里,托福小编将为大家介绍一些托福阅读句型的结构,考生在进行托福阅读复习时不妨将这些结构方法运用起来,可以加快托福阅读的复习效率