自考英语综合二上册课文 lesson 12

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科学美国人60秒 SSS When Dining for Trillions, Eat Wisely

You are what you eat, the old expression goes. But it leaves out one crucial detail. We don't dine alone. We dine with trillions of friends. Jeff Gordon, a microbiologist at Washington University in Saint Louis. And they are partners in consuming the

科学美国人60秒 SSS When We Fly to Mars, Microbes Will, Too

When We Fly to Mars, Microbes Will, Too 飞向火星的不止是你，还有我 A humid bathroom is the perfect habitat for mold. But there are ways to avoid it. We can just open the window and let some fresh air in! Not so easy on a space station th

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AGRICULTURE REPORT - Jojoba: Not Your Usual Oilseed CropBy Mario Ritter Broadcast: Mon, 3 Jul 2006 16:00:00 UTC I'm Shep O'Neal with the VOA Special English Agriculture Report. Jojoba plants We have a

Rachel Carson

By Lawan Davis Broadcast: September 7, 2003 (THEME) People in America, a program in Special English on the Voice of America. Today, Steve Ember and Rich Kleinfeldt tell about scientist Rachel Carson.

美国科学60秒 SSS 2013-08-30

Everywhere you go, the trillions of microbes in your gut go, too. And that's a comforting thought, because according to a new study, a more diverse population of intestinal bacterias is linked to better health. The work is in the journal Nature. Dani

美国科学60秒 SSS 2013-08-29

everywhere you go ,the trillions of microbes in your gut go,too.and that's a comforting thought,because according to a new study,a more diverse population of intestinal bacteria is linked to better health. the work is in the journal Nature.Danish res

[科学美国人60秒] SSS 2015-09-23

You might blame your pets for shedding all over the house, but we humans do it, too, and our staff is alive. We are constantly meeting microbes around us, and this is coming from shedding our skin, from exhaling, and our hair, and we are just full of

SSS 2010-03-16

They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists at the University of Colorado in Boulder have been able to identify individuals ba

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According to the Newscientist of September 7, weight loss has a serious downside: it leads to the release of persistent organic pollutants (POPs), which may have a significant impact on health. POPs are man-made chemicals which enter the food chain f

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Chinese scientists discover gut bacteria linked with obesity Obesity could be caused by bacterial infection rather than eating too much, exercising too little or genetics, according to a study that could have profound implications for public health s

VOA标准英语2012--Pesticides Threaten Thailand’s Reputation as Food Exporter

Pesticides Threaten Thailands Reputation as Food Exporter Here, in the hills of Northern Thailand, farm workers like Inson face the constant pressure of producing optimum harvests for overseas clients. Many farms rely on imported chemical pesticides

VOA标准英语2013--Pesticides Contribute to Decline in World's Bee Population

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科学美国人60秒 SSS Pesticides Act as Honeybee Contraceptives

Over the last year, beekeepers in the U.S. lost nearly half their honeybee hives. And there are a lot of suspected culprits for this so-called beepocalypsefrom parasitic mites, to viruses, to simple land use changes. But a study out earlier this year

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According to the Newscientist of September 7, weight loss has a serious downside: it leads to the release of persistent organic pollutants (POPs)， which may have a significant impact on health。 POPs are man-made chemicals which enter the food cha

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Ya?l: Welcome to another episode of Lunch with Don and Ya?l. So, Don, what are you eating today? Don: Nothing. Y: Nothing!?! Are you on a diet or something? D: Not by choice. To be honest, I'm trying to save money by buying less food. Y: Why? D: Beca

GRE试题七(2)

9. In recent years, there has been a dramatic decline in the population of the shrike, a predatory bird that inhabits flat land, such as farms and pastures. Some ornithologists hypothesize that this de