无配(子)生殖,无融生殖

用Mp3背六级单词015

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用Mp3背六级单词

美国科学60秒 SSS 2013-02-19

This is scientific American's science 60 second science, I am steve mosbyA lot of people have had compacted third molars. Third molars produce chronic pain. Allen man, a Princeton University Physical anthopolegist, the annual meeting of the immagrate

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Scientific American(二)月

美国科学60秒 SSS 2013-02-18

A lot of people have had impacted third molars. Third molars produce a lot of chronic pain. Alan Mann, a Prinston University physical anthropologist at the annual meeting of the American Association for the Advancement of Science in Boston on Februar

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Scientific American(二)月

VOA慢速英语2018 科学家首次在实验室培育出完全成熟的人类卵子

Scientists Grow First Fully Developed Human Eggs in Laboratory For the first time ever, scientists have succeeded in growing human eggs from the earliest stages to full maturity in a laboratory. 科学家们有史以来首次在实验室将人类卵子

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2018年VOA慢速英语(二)月

VOA常速英语2018--科学家试图通过动物粪便来寻找增加繁育量的方法

Researchers are trying to identify the reasons behind the poor population growth of some of Africas wild animals including the Grevy and Cape Mountain zebras. A major focus is the endangered black rhino. What weve done with the University of Manchest

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VOA标准英语2018年(九月)

与美国小学生一起学英文第10册第8期:卵细胞

Egg Cells 卵细胞 Do you know what an egg cell is? 你知道什么是卵细胞吗？ An egg cell is necessary for reproduction. 卵细胞是繁殖的必要条件。 Animals have egg cells. 动物有卵细胞。 Then does every animal have egg cells

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与美国小学生一起学英文第10册

VOA慢速英语 2007 0612b

VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Steve Ember. On our program this week, we will tell about an animal that can reproduce without mating. We also will tell about a Swedish man who d

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VOA慢速英语2007年（六）月

分类词汇：知识产权 2

ISPs 网络服务提供者 CTR click through rate 点击率 hack tools/ cheating program 私服，外挂 SAM 软件资产管理 OD plants 光盘生产厂 OD exemplars 光盘模板 OD testing 光盘鉴定 collective management 集体管理 performing

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本期真题 1. Nancy is only a sort of ______ of her husband's opinion and has no ideas of her own. A) sample B) reproduction C) shadow D) echo 2. Now that spring is here, you can ______ these fur co

发表于:2019-02-01 / 阅读(94) / 评论(0)

英文语法词汇

2006年VOA标准英语-Is It Still Art If It's a Reproduction?

By Stephanie Ho Washington 08 January 2006 The inaugural exhibit at the new Loyola University Museum of Art in Chicago is raising questions about art and the value of copies of art. The show features

发表于:2019-02-03 / 阅读(183) / 评论(0)

2006年VOA标准英语（一月）

经济学人220:人类繁衍 45岁也能生娃

Science and technology 科学技术 Human reproduction 人类繁衍 Life begins at 45 45岁也能生娃 Hope for older mothers 高龄母亲的福音 WHEN it comes to reproduction, men have it easy. 讲到繁衍，男人表示压力很小。 Almost to

发表于:2019-02-05 / 阅读(96) / 评论(0)

经济学人科技系列

VOA标准英语2008年-Thai Army Chief Says Force Will Not Be Used Aga

Thailand's army chief vows the military will not use force against protesters in Bangkok. As Ron Corben reports from Bangkok, his comments follow a state of emergency declared by Prime Minister Samak Sundaravej. Prime Minister Samak Sundaravej gestu

发表于:2019-02-12 / 阅读(110) / 评论(0)

VOA标准英语2008年（九月）

Who Was Sacagawen 萨卡加维亚 Chapter 6

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

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名人认知系列 Who Was

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名人认知系列 Who Was

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名人认知系列 Who Was

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名人认知系列 Who Was

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 1

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名人认知系列 Who Was

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【英语时差8,16】蜗牛（下）

Although snails can and do successfully mate without stabbing each other, studies have shown that darted snails store one-hundred-sixteen percent more sperm than undarted snails.

发表于:2019-03-06 / 阅读(139) / 评论(0)

英语时差8，16

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