英语专业四级听写018

Passage 18 Flowering Plants What are the parts of a flower? Flowers can have male parts and female parts. The female parts make eggs that become seeds. The male parts make pollen. Pollen is a powdery material that is needed by the eggs to make seeds

英语专业四级听力50篇 18 Flowering Plants

What arc the parts of a flower? Flowers can have male parts and female parts. The female parts make eggs that become seeds. The male parts make pollen. Pollen is a powdery material that is needed by the eggs to make seeds. To make seeds, pollen and e

VOA标准英语2011--Reducing HIV Risk with Painless Male Circumcision

Reducing HIV Risk with Painless Male Circumcision Studies have shown that male circumcision greatly reduces the risk of HIV transmission. The World Health Organization is weighing approval of a new device that could make the procedure simple and pain

初级英语听力（新） lesson 9

I'm going to clean the blackboard. But you can't do that. Why can't I? We haven't got a duster. Did you walk to the match? No. I went by car. Did John go by car, too? No. He cycled. Hello, and how did you spend the holiday? I played tennis till lunch

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.

SSS 2012-02-23

This is Scientific American 60 second Science, I'm Sophie Bushwick, got a minute In the lab, female rodents sometimes terminate their pregnancies after being exposed to new males. Its called the Bruce effect, for researcher Hilda Bruce. Now a study i

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Pollinators Shape Plants to Their Preference我的进化来自你的偏好 Honeybees are the charismatic microfauna of the pollination world. But flies, bumblebees, butterflies and mothsthey all pollinate, too. With varying degrees of success. The po

大学体验英语听说教程 第三册16

Unit 16 Fixing up the place Vocabulary Task Answers/Script A I want a room that is soothing and relaxing ,not sterile. I want a nice thick braided rug and some lava lamps. I think Id like to get an overstuffed rattan chair. B I want a room that is us

生活大爆炸第四季第一集_3

生活大爆炸第四季第一集_3 剧情简介： The Big Bang Theory是一部以科学天才为背景的情景喜剧.四位科学天才分别是:可爱善解人意的Leonard,高智商零情商的Sheldon,会六国语言的 Howard Wolowitz,以及患有

那些拒绝将财产留给子女的名人

According to an interview with the Telegraph lately, Gordon Ramsay's three children won't be sharing much in the chef's $54m wealth once he's gone. 日前大厨戈登?拉姆齐在接受《每日电讯报》的采访时称，他过世后，三个子女将

SSS 2008-03-19

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds an

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

VOA标准英语2014--Project to Save Endangered Orchids Blossoms in Florida 佛罗里达开始拯救濒危兰花花种的计划

Project to Save Endangered Orchids Blossoms in Florida 佛罗里达开始拯救濒危兰花花种的计划 Many gardeners around the world consider orchids among the most beautiful flowering plants. There are more than 20,000 species of orchids, and

吉尼斯世界纪录 俄国妈妈生娃69个

The record for most babies born to one woman is 69. Yes, you read that correctly 69! 世界上生孩子最多的女人共生下了69个孩子。对，你没看错，就是69个！ Who was this amazing woman? We dont really know. Her husband is the on

TED演讲:昭示长寿的实验(5)

Thank you, Cynthia. 谢谢，辛西娅 Let me get this straight. 让我直说 Although you're looking for a drug 尽管你在找寻一种药 that can solve aging 它能解决 in old men like me, 像我一样老人的衰老问题 what you could do now

TED演讲:昭示长寿的实验(1)

Have you ever wanted to stay young a little longer 大家有没有想过要年轻再久一点 and put off aging? 延缓衰老呢？ This is a dream of the ages. 这是很久以来的梦想了 But scientists have for a long time 不过科学家以前一

初级英语听力(新版) Lesson 9

I'm going to clean the blackboard. But you can't do that. Why can't I? We haven't got a duster. Did you walk to the match? No. I went by car. Did John go by car, too? No. He cycled. Hello, and how did you spend the holiday? I played tennis till lunch

英语听力文摘 English Digest 286、变性的青蛙

Gender-Jumping Toads 美国研究人员说，常用除草剂阿特拉津会令雄蛙变性为雌蛙。美国加利福尼亚大学伯克利分校研究人员把40只雄性非洲爪蛙放入阿特拉津浓度为10亿分之2.5的水中，发现90%雌性化

英语听力文摘 English Digest 393、单亲蜜蜂王国

Fatherless Honeybee s How male honeybee s can be without fathers? The reason lies in whats called a haploidiploid system of sex determination. Approximate ly one-fifth of the animal kingdom, including ants and wasp s , use this system. What it boils

生活大爆炸第一季第十七集_3：The Tangerine Factor

-Penny：Leonard might come home. Leonard可能快回来了。 Can we talk in my apartment? 能到我的公寓里谈吗? -Sheldon：We're not done? 还没说完? -Penny：No. 没有。 -Sheldon：Eh, why not? 哎呀，好吧。 We're already through