This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because

发表于:2018-12-24 / 阅读(77) / 评论(0) 分类 Scientific American(三)月

Jon Foley: Agriculture turns out to be one of the biggest emitters of greenhouse gases. About 30% of all of our greenhouse gases come from either clearing land or farming land we already have. That's more than all the worlds electricity. It's more th

发表于:2018-12-28 / 阅读(37) / 评论(0) 分类 初学者听力文摘精选

1. bicentennial /ˈbaisenˈtenjəl/ -- two hundredth anniversary The bicentennial of George Washington's birth was celebrated in 1932. 乔治华盛顿200周年生日纪念于1932年举行。 2. semicircle /ˈsemɪˌsɜ:kəl/ -- half of a circle At th

发表于:2018-12-30 / 阅读(61) / 评论(0) 分类 突破英文词汇

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 kosher [ 5kEuFE ] Things were all kosh

发表于:2018-12-30 / 阅读(38) / 评论(0) 分类 每日攻克5词

We don't really know for sure because we have nothing else to compare our own existence to, 我们确实不知道,因为我们没有任何别的东西可以用来跟我们自己的存在进行比较。 but it seems evident that if you wish to end u

发表于:2019-02-25 / 阅读(53) / 评论(0) 分类 万物简史

台湾籍旅美老师今天交给我们的句子是: But, statistically, most of us are hardwired to lean towards optimism. Known as the optimism Bias and found in around 80% of the population, we tend to overestimate the probability of positive ev

发表于:2019-03-05 / 阅读(68) / 评论(0) 分类 留美老师带你每日说英文