单词：water vascular systems
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16 自然和人为因素使得北非乍得湖严重干枯 DATE=4-19-01 TITLE=SCIENCE REPORT - Lake Chad Shrinking BYLINE=Jerilyn Watson （Start at 1'01
自然探索
Broadcast: February 21, 2003 By George Grow This is the VOA Special English Environment Report. Everywhere, water use is increasing. Humans already use fifty-four percent of all the fresh water in riv
VOA2003（上）-社会广角
With all the snows still around the Cougar Rock Campgrounds, there were no visitors inside. But we did find a group of park rangers and some Japanese businessmen celebrating the opening of a new campground toilet. So what's the big deal? Well, this i
万花筒2008年
This is the VOA Special English Development Report. Amizade volunteers learn about local culture and make friends as they work in communities throughout the world Amizade means friendship in Portuguese. It is also the name of a service organization
VOA慢速英语2009年（七）月
What was around the bend in rivers hundreds of millions of years ago? Its a trick questionbecause there werent any bends. Ancient rivers were typically just wide, sheetlike flows of water. New reports in the journals Geology and Earth-Science Reviews
Scientific American(一)月
(From an Omni Processor promotional video:) Bill Gates: Over 2.5 billion people have no access to safe sanitation. We asked brilliant engineers to help us solve this problem, and one of those engineers actually has proposed a solution where the waste
英语语言学习
Plants Put the Bend in Rivers Studies in the journals Geology and Earth-Science Reviews reveal that ancient rivers were broad straight sheets of water. Colonization by plants changed the water flow. Adam Hinterthuer reports What was around the bend i
60秒科学
Broadcast: May 12, 2003 By Jill Moss This is the VOA Special English Development Report. Each year, millions of people in Bangladesh drink ground water that has been polluted by naturally high levels
VOA2003（上）-社会广角
新gre作文写作考察考生完成题目过程中是否能够融合批判性思维和分析写作能力，以下是gre考试写作部分issue的优秀写作实例，通过这些优秀范文或是习作，考生可以借鉴里面的短语、句子或思
GRE作文
AS IT IS 2013-05-24 New Study Predicts Huge Species Loss from Climate Change From VOA Learning English, this is At It Is. Welcome! Im Caty Weaver. This week, American scientists said carbon dioxide in Earths atmosphere had risen to its highest level
2013年VOA慢速英语(六)月
By Uma Ramiah Dakar 21 May 2008 A year-old project in Benin has shown that harnessing the power of sunlight could provide long-term solutions to hunger in underdeveloped nations. A six-month dry season in the Kalale District of Benin used to wreak ha
VOA标准英语2008年（五月）
Small-Scale Irrigation Nets Large-Scale Payoff A new study shows small-scale irrigation systems could boost farmers incomes by billions of dollars in sub-Saharan Africa and South Asia. The research was discussed at the World Water Week conference in
VOA标准英语2012年(八月)
Polar Scientist Charts Melting Caused by Climate Change Michael Gooseff follows water to the end of the earth. The Pennsylvania State University hydrologist works in remote regions of the Arctic and Antarctic, where ice and frozen ground are thawing.
VOA标准英语2011年(八月)
Scientists Ponder 'Epoch' of Damage to Global Water System Scientists say a new geologic epoch has begun whereby humans are causing major damage to global water systems. They warn of a planetary transformation comparable to the retreat of the glacier
VOA标准英语2013年(五月)
Many Chinese cities have introduced rainwater reuse systems to relieve the pressures of scarce water supply brought by fast development. Li Dong has more. As one of the fastest growing cities in China with a population of over 23 million, Shanghai is
英闻天下
This is the VOA Special English Development Report. Harvest in Benin A new study in West Africa shows how farm irrigation systems powered by the sun can produce more food and money for villagers. The study in Benin found that solar-powered pumps are
2010年慢速英语(一)月
淡水FRESHWATER 淡水资源Freshwaterresources 谈水保护Conservationoffreshwater 水坝Dams 冰Ice 湖泊Lakes 自然排水系统Naturaldrainagesystems 河流流域开发Riverbasindevelopment 河流
英文语法词汇
The more you know about the various heating systems that are available on the market today, the better able you will be to choose the best one for your home. Obviously, your main goal (besides being comfortable), is to have a heating and air conditio
实用英语
Researchers in Sydney are leading a new international effort to make desalination more environmentally friendly. Current techniques tend to use excessive amounts of energy or are heavily reliant on chemicals. The University of Technology in Sydney is
英语新闻
In our day, we have digitization. That strips all the physical mass out of information, 现在我们有了数据电子化。这把信息从成堆成堆的状况下解救出来， so now it's almost zero cost to copy and share information. 所以现在拷
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