染色体畸变

美国国家电台 NPR 2012-09-28

The hearts and minds of voters were in contention in the swing state of Virginia today, where NPR's Mara Liasson tells us President Obama and GOP hopeful Mitt Romney made appearances. Both candidates were in Virginia today. Mitt Romney campaigned in

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2012年NPR美国国家公共电台9月

SSS 2008-05-21

This is scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? The yeast Candida albicans ekes out a quiet living in our gut. But its a tough life. It faces acids and enzymes, and the immune system always bullies invaders.

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Scientific American(五)月

SSS 2008-06-30

This is Scientific American's 60-Second Science, I am Steve Mirsky,Got a minute? A team of Finnish and American geneticists has found that that, for some people at least, music is in their genes. In what the researchers called the first study of its

发表于:2018-12-24 / 阅读(137) / 评论(0)

Scientific American(六)月

双语趣听精彩世界第66期:美科学家给电脑屏幕戴上眼镜

加州日报：以后视力有问题的人看显示屏再不用戴眼镜了,因为美科学家给电脑屏幕戴上了眼镜. 美科学家给电脑屏幕戴上眼镜 Daily California: People with vision problems may be able to forgo eyeglasses and c

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双语趣听精彩世界

VOA标准英语2012--Birth Defects Rise in Former Iraqi Battleground

Birth Defects Rise in Former Iraqi Battleground Five-year-old Lujane is one of hundreds of children in Fallujah who have been born since 2004 with severe birth defects. Her father says Lujane suffers from multiple afflictions that Iraqi doctors strug

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VOA标准英语2012年(十二月)

英语听力：2013-11-15 地平线：黑洞吞噬—25

Galaxies could in a way, be much bigger than they currently are. Something is stopping them growing larger and that something is the black hole at the center. Now this is bizarre because the ration of the size of the black hole to the size of the gal

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探索与发现2013年

Business Channel 2007-03-08&10

The closing bell rang moments ago and it couldn't have come too soon for many investors after this crazy week on Wall Street. It was another roller-coaster session for the market. Stocks actually edged into the plus column briefly, but by the end it

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商业报道2007年

Scientists solve mystery over copycat butterflies

CANBERRA, Aug. 17 (Xinhua) -- Australian scientist on Wednesday said his international research team has discovered the trick on how butterfly learn to change its wing pattern to avoid being eaten by birds. The Amazonian butterfly, Heliconius numata,

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英语新闻

TED演讲:出身决定命运?（1）

I want you to imagine two couples 我希望大家设想一下，两对夫妇 in the middle of 1979 在1979年的年中 on the exact same day, at the exact same moment, 在相同的一天，相同的时刻 each conceiving a baby -- okay? 每对怀上了

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TED演讲教育篇

GRE阅读：如何快速锁定正确答案

GRE阅读理解考查的范围非常广，不像填空、类比和反义那样注重基础和词汇量，而GRE考试的阅读又与其他考试中的阅读有很大区别，所以在技巧方法上也要区分对待。GRE阅读中多见长句，对理

发表于:2019-02-17 / 阅读(202) / 评论(0)

GRE英语

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学英语单词

a point in dispute

actinofibril

antecedent and consequent

asian tiger mosquitoes