Section 35 The Body Throughout the world, our bodies are different colors. Hair, eyes and skin may vary according to our genes. Other aspects of our body, thought, are roughly the same. Most of us can

发表于:2018-12-07 / 阅读(54) / 评论(0) 分类 英语导读1000句

Ketchup: An American Condiment with an Asian Connection At any given time, about 97 percent of American kitchens have a bottle of ketchup. American ketchup is made from red tomatoes, vinegar, salt, sugar and other ingredients. It has both a sweet and

发表于:2018-12-07 / 阅读(51) / 评论(0) 分类 2017年VOA慢速英语(八)月

By Nancy Steinbach Broadcast: October 1, 2003 This is Faith Lapidus with the VOA Special English Health Report. Scientists in Iceland say they have identified the first gene linked to common forms of

发表于:2018-12-15 / 阅读(86) / 评论(0) 分类 VOA2003(下)-环境与健康

Hi, I'm Carl Azuz. I'm 62, I have dark hair and brown eyes. No why, genes, this a little piece of code that determining the characteristicsof living things and all living things have them. But genes can be changed, they can be modified, that's how yo

发表于:2018-12-19 / 阅读(69) / 评论(0) 分类 CNN2013年(六)月

The survival strategies of some species can seem counter-intuitive to us until we examine them in detail. Let's take the example of bees, which die after stinging once, because the stinger tears out their insides. How can this self-destructive trait

发表于:2018-12-27 / 阅读(36) / 评论(0) 分类 英语时差8,16

I know that every cell in my body has a copy of my DNA packed into its nucleus. And I also know that if I could somehow unravel the DNA from a single cell, it would be about six feet long. So my question is, is DNA jammed into the nucleus in a sort o

发表于:2018-12-27 / 阅读(42) / 评论(0) 分类 英语时差8,16

In this Moment of Science Yael and Don discuss how women can see more color. Yael: Not only are eight percent of men colorblind, but even compared to men who can distinguish between reds and greens, many women may live a more colorful existence. That

发表于:2018-12-28 / 阅读(132) / 评论(0) 分类 初学者听力文摘精选

About six or seven million years ago chimpanzees and humans evolved from a common primate ancestor. Chimps went on to become the relatively small-brained, forest dwelling creatures we know and love. Humans went on to evolve large brains, spread throu

发表于:2018-12-28 / 阅读(41) / 评论(0) 分类 初学者听力文摘精选

模仿文本:How can understanding what it takes to climb Mount Everest help to save lives on intensive care wards? Hugh Montgomery is a professor of intensive care medicine at University College Hospital in London. His breakthrough discovery was f

发表于:2018-12-28 / 阅读(60) / 评论(0) 分类 英音模仿秀

Now, in addition of that we now know that it is scientifically true 此外 有一个铁的事实我们都已经知道了 I spent three billion dollars of your money to finish the sequencing of human genome 就是我花了你们三十亿美元 用来完

发表于:2018-12-30 / 阅读(48) / 评论(0) 分类 公众人物毕业演讲

Can Babies Be Designed? We hear a lot nowadays about designer babies. The idea that parents can choose the genes of their children sounds frightening. The question we have to answer is: how much can w

发表于:2018-12-30 / 阅读(60) / 评论(0) 分类 英语沙龙2004全年合辑上

Broadcast: Mar 13, 2003 Researchers are developing a blood test to look for colon cancer. The blood test is designed to detect 2) abnormalities in genes that control cell growth. These genes are passe

发表于:2019-01-03 / 阅读(101) / 评论(0) 分类 VOA2003(上)-科技先知

AGRICULTURE REPORT - Calls for a 'Gene Revolution' By Mario Ritter Broadcast: Tuesday, June 01, 2004 This is Steve Ember with the VOA Special English Agriculture Report. There are sixty-eight million

发表于:2019-01-04 / 阅读(130) / 评论(0) 分类 农业与发展

New medical research into a possible cure for Parkinson's disease is focusing on finding biomarkers in patients so that doctors can start treatment early before tremors and other symptoms start. Actor Michael J. Fox's recent commitment of $40 million

发表于:2019-01-14 / 阅读(83) / 评论(0) 分类 VOA标准英语2011年(一月)

I've heard that it's easing up the restrictions, and it's easier to get a visa. My young Chinese friends, I want to tell you that in case no one from America has ever invited you, let me do this right now personally. I want to warmly invite all of yo

发表于:2019-01-18 / 阅读(61) / 评论(0) 分类 偶像励志英语演讲

New medical research into a possible cure for Parkinson's disease is focusing on finding biomarkers in patients so that doctors can start treatment early before tremors and other symptoms start. Actor Michael J. Fox's recent commitment of $40 million

发表于:2019-01-19 / 阅读(72) / 评论(0) 分类 VOA双语新闻 2011年1月

In laps,bacteria may swim freely,but out in the world,including our bodies,bacteria often exist packed together in dense communities called biofilms. and these configurations can help them cause illness.finding clues about how such bacteria gro

发表于:2019-01-20 / 阅读(68) / 评论(0) 分类 Scientific American(八)月

Topic1 Sales of mall cosmetics fallA market research shows the growth of cosmetics sales in Chinese shopping malls hit their lowest level in six years. According to the Beijing-based China National Commercial Information Center, an information servic

发表于:2019-01-21 / 阅读(61) / 评论(0) 分类 英语角-圆桌会议

Howard said, We're so lucky to live in the Big Apple. Everywhere I look, I see another gorgeous woman. Look at that blonde walking our way. She's definitely a 10. Alan said, Well, maybe a 9. Her eyes are a little too close together. But it's interest

发表于:2019-01-22 / 阅读(63) / 评论(0) 分类 英文短篇故事(纽约)

Tick-tock, tick-tock. Is that your biological clock? And if it is, are you female? Most people think biological clocks are strictly female phenomena, with infertility and the risk of certain diseases going up with a mother's age. But the biological c

发表于:2019-01-22 / 阅读(68) / 评论(0) 分类 英语时差8,16