染色体不分离

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.

发表于:2018-12-24 / 阅读(199) / 评论(0)

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(136) / 评论(0)

Scientific American(六)月

新视野大学英语视听说教程 4 Unit 2-2

III. Listening In Task 1: A Friendly Stylist Stylist: Morning, sir. This chair, please. What can I do for you? Nick: A simple haircut: short on the back and sides. Stylist: Very good. I can, of course, do something fashionable for only $60. Nick: 60

发表于:2018-12-29 / 阅读(141) / 评论(0)

新视野大学英语：视听说教程 4

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

发表于:2019-01-14 / 阅读(181) / 评论(0)

VOA标准英语2012年(十二月)

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,

发表于:2019-02-06 / 阅读(175) / 评论(0)

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

发表于:2019-02-13 / 阅读(161) / 评论(0)

TED演讲教育篇

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capacitive transducer