[00:06.79]Lesson 33 1 Read and act [00:15.12]Do you think the air in Beijing is bad? [00:19.77]Yes, it's often quite dirty. [00:24.03]But don't you think it's better than it used to be? [00:28.79]Well,I can't say for sure.I've only lived here for a y

发表于:2018-12-01 / 阅读(94) / 评论(0) 分类 初中英语人教版初三

On a restricted site in northern Wisconsin, the hissing you hear is helping scientists see the future. Inside towering rings of pipes, aspen, birch, and sugar maples feed on measured diets of greenhouse gases. Our studies were looking at what forest

发表于:2018-12-30 / 阅读(96) / 评论(0) 分类 国家地理2007年

Rich cities around the world are largely responsible for greenhouse gas emissions, says a new study. The study measures emissions based on the use of goods and services, such as food, clothing and electronics, by people living inside cities. It inclu

发表于:2019-01-03 / 阅读(52) / 评论(0) 分类 2018年VOA慢速英语(三)月

Scientists Develop New Ways to Track Greenhouse Gases With more than 18 million people living, working and driving in Los Angeles, the city often is covered in a hazy layer of smog. Stan Sander, senior research scientist at the U.S. space agency's Je

发表于:2019-01-14 / 阅读(45) / 评论(0) 分类 VOA标准英语2013年(七月)

New Ways of Tracking Greenhouse Gas Emissions Developed With more than 18 million people living, working and driving in Los Angeles, the city often is covered in a hazy layer of smog. Stan Sander, senior research scientist at the U.S. space agency's

发表于:2019-01-14 / 阅读(54) / 评论(0) 分类 VOA标准英语2013年(七月)

By Nancy-Amelia Collins Bali 10 December 2007 Delegates to the U.N. climate change conference are locked in debate over whether to set tough new limits on greenhouse-gas emission, with the United States leading the fight against firm limits. VOA's Na

发表于:2019-01-31 / 阅读(55) / 评论(0) 分类 VOA常速英语2007年(十二月)