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I began teaching with the idea of giving back; But I received more than I gave. This brings me to the final movement of this speech. It begins with a story about an extraordinary scientific discovery and a newdilemmathat it poses. Its a call to arms

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【听听测测】Model Test 78

The main ______of singapore ________are relatively uniform temperature, high ______and ______rainfall. because of its position as an ________and its _________to the Equator . The ________daily temperature is _________.degrees Celsius. The mean maximu

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今天我们要学的词组是sell off。 Sell off的意思是出售，特别是为了出手而廉价出售。 He had to sell off his stock. 节日一过，商店纷纷廉价出售圣诞节商品， Stores tried to sell off their Christmas goods. 作为

科学家表示今年二氧化碳含量将上升

Scientists: CO2 Levels Will Rise This Year International scientists think the amount of carbon dioxide emissions released into Earths atmosphere will rise by two percent in 2017. The number represents the first increase in worldwide carbon emissions

科学家警告称不久的将来会有灾难性的全球变暖

Scientists Warn of Disastrous Global Warming in Near Future The United Nations Intergovernmental Panel on Climate Change (IPCC) is warning that the world is heating faster than predicted. The group says a major slowing of warming is critical to avoid

VOA标准英语2009年-Copenhagen Conference Gets Down to Wor

The international climate conference in Copenhagen, Denmark enters its second day amid reminders global warming is already underway and calls to come up with a solid, workable deal in the days to come. Sonja Pace | Copenhagen 08 December 2009 Michel

SSS 2010-04-02

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? A direct effect on human health related to climate change is the likely increase in infectious diseases transmitted by insects or through contaminated water. In the Marc

SSS 2011-12-07

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. It's hard to feel a sense of urgency about climate changeit feels so slow. Well, try telling that to the critters dealing with it. Because new data sugge

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More of Us to Go Thirsty As Earth Dries Up

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VOA标准英语2011--Many Unknowns about Future Climate Change Effects

Many Unknowns about Future Climate Change Effects Scientists say many of the long-term effects of rising temperatures are still unknown. Theyre discussing the problem at the U.N. climate change conference in Durban, South Africa. Researchers say clim

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The Science of Climate Change Climate negotiators are meeting in Durban, South Africa beginning from November 28-December 9 to discuss the planet's changing climate. The first decade of this century was the hottest on record. Polar ice is melting. Gl

VOA常速英语2008年-Rapid Malaria Tests Change Medical Diagnoses in

By Phuong Tran Dakar 25 April 2008 What started out as Africa Malaria Day was being observed worldwide for the first time on Friday. Health organizations have long said that most of the one million deaths every year attributed to malaria happen in Af

Climate change might lead to water shortage in the Alps

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联合国气候大会巴黎开幕

At the UN climate summit which starts Monday in Paris, governments are expected to adopt a landmark deal to fight climate change and help vulnerable countries deal with rising sea levels, extreme weather events and other effects of global warming. UN

VOA标准英语2009年-UN Envoy: Climate Change Talks Moving

First official draft for a deal at the UN climate conference in Copenhagen says the world should at least halve world greenhouse gas emissions by 2050. The blueprint was released as European leaders pledged over $10 billion to help poor countries cop

正确使用空调对身体有好处

【Transcript】 Less use of air conditioners would be better for us all A strict no-air-conditioning ban was enforced for 87,000 Taiwanese students taking the college entrance examinations this month despite temperatures in many areas reaching 34 to

CCTV9英语新闻：在冰水中冬泳为健康和乐趣

While most Chinese bundle up in winter, some are stripping down to celebrate the frosty weather. Although the temperature may fall to minus 10 to 20 degrees Celsius in northeast China, that cant chill the enthusiasm of these winter swimmers who took