[生态] 生物群落；生物共同体

VOA标准英语2011--Modern-Day Knights Rescue Communities in

Mo dern-Day Knights Rescue Communities in Distress In days of old, knights fought for damsels in distress, but in the 21st century, they sometimes battle to help small communities raise revenue. Jousting, in which armored knights compete in games of

发表于:2018-12-08 / 阅读(80) / 评论(0)

VOA标准英语2011年(八月)

2007年VOA标准英语-Antibiotic Resistance Fast-Growing Problem Worl

By Carol Pearson Washington 28 February 2007 watch Antibiotic Resistance report Penicillin and Erythromycin are examples of antibiotics that used to be one-time miracle cures. These drugs and other antibiotics are now less effective because bacteria

发表于:2018-12-16 / 阅读(120) / 评论(0)

2007年VOA标准英语（二月）

美国国家公共电台 NPR Probiotics For Babies And Kids? New Research Explores Good Bacteria

STEVE INSKEEP, HOST: This year Americans will spend more than $2 billion on probiotics, supplements aimed at boosting what are called good bacteria inside us. One part of the market that's growing rapidly is probiotics for babies and kids. Here's NPR

发表于:2018-12-17 / 阅读(87) / 评论(0)

2018年NPR美国国家公共电台5月

2016年CRI Debates over Gated Residential Communities

The government guidelines released on Monday are aimed at tackling problems associated with urbanization and the growing city sprawl in rural areas. A key aspect of the guideline calls for roads in newly built communities to be opened up to the wider

发表于:2018-12-20 / 阅读(108) / 评论(0)

2016CRI中国国际广播电台

60秒科学:Do Rainforests Create Rain?

Rainforests exist because it rains a lot and that makes the forests grow, right? Well, not so fast. What if its not the rain that makes the forestswhat if its the forests that actually generate the rain? Thats the contention of a paper in BioScience

发表于:2019-01-02 / 阅读(164) / 评论(0)

60秒科学

SSS 2009-05-07

Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience

发表于:2019-01-08 / 阅读(124) / 评论(0)

Scientific American(五)月

加州语文教材 G3 V1 Building Communities 07

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发表于:2019-01-10 / 阅读(139) / 评论(0)

加州语文教材California Treasures G3

加州语文教材 G3 V1 Building Communities 06

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发表于:2019-01-10 / 阅读(126) / 评论(0)

加州语文教材California Treasures G3

加州语文教材 G3 V1 Building Communities 05

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发表于:2019-01-10 / 阅读(135) / 评论(0)

加州语文教材California Treasures G3

加州语文教材 G3 V1 Building Communities 04

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发表于:2019-01-10 / 阅读(147) / 评论(0)

加州语文教材California Treasures G3

加州语文教材 G3 V1 Building Communities 03

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发表于:2019-01-10 / 阅读(139) / 评论(0)

加州语文教材California Treasures G3

加州语文教材 G3 V1 Building Communities 01

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发表于:2019-01-10 / 阅读(140) / 评论(0)

加州语文教材California Treasures G3

加州语文教材 G3 V1 Building Communities 02

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发表于:2019-01-10 / 阅读(148) / 评论(0)

加州语文教材California Treasures G3

VOA标准英语2011--African American Communities Face AIDS Crisis

African American Communities Face AIDS Crisis More than a million people in the United States are living with HIV, the virus that causes AIDS. The U.S. Centers for Disease Control estimates that approximately 50,000 more people are infected with HIV

发表于:2019-01-13 / 阅读(85) / 评论(0)

VOA标准英语2011年(十一月)

VOA标准英语2011--Surfers' Helping Hands Impact Beach Communities

Surfers' Helping Hands Impact Beach Communities It's not uncommon for surfers to travel the world chasing the best waves. But what is out of the ordinary is how members of Surf for Life pass the time when they're not out on the water. Instead of kick

发表于:2019-01-13 / 阅读(96) / 评论(0)

VOA标准英语2011年(十一月)

VOA标准英语2014--Niger Delta Communities Pressure Shell on 2011 Oil Spill

Niger Delta Communities Pressure Shell on 2011 Oil Spill YOUBEBE, NIGERIA Local leaders in the Niger Delta want to unite competing communities to pressure Shell Petroleum to pay billions of dollars in reparations and clean up of fishing areas they sa

发表于:2019-01-14 / 阅读(100) / 评论(0)

VOA标准英语2014年(三月)

美国国家公共电台 NPR Probiotic Bacteria Could Protect Newborns From Deadly Infection

ROBERT SIEGEL, HOST: Now some good news, especially for babies around the world. Scientists in the U.S. and India have found an inexpensive treatment for a common infection. It could save hundreds of thousands of newborns each year. The treatment com

发表于:2019-01-16 / 阅读(134) / 评论(0)

2017年NPR美国国家公共电台8月

美国国家公共电台 NPR Could Probiotics Protect Kids From A Downside Of Antibiotics?

RACHEL MARTIN, HOST: Go online, walk through any health store or supermarket, and you'll find all kinds of products being sold as probiotics. They're being promoted for all kinds of things - preventing upset stomachs, boosting the immune system, figh

发表于:2019-01-16 / 阅读(99) / 评论(0)

2017年NPR美国国家公共电台12月

专家:益生菌酸奶并非有益肠道健康

Probiotic yoghurt drinks and supplements dont live up to their promises, according to an EU watchdog. They claim to boost your immune system and help digestion. It concluded there is no scientific proof that products such as Yakult have any health be

发表于:2019-02-04 / 阅读(96) / 评论(0)

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VOA标准英语2009年-Minority Communities Say Burma Development

By Ron Corben Bangkok 05 November 2009 Minority communities in Burma say the exploitation of the country's natural resources is damaging the environment and increasing the military presence in their areas. The activists say greater public participat

发表于:2019-02-12 / 阅读(87) / 评论(0)

VOA标准英语2009年(十一月)

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