[00:03.20]Unit 7 The Sea Lesson 3 The Sea World [00:07.92]UNDERwater WORLD [00:10.16]The Best Plance To See Sea Creatures [00:13.62]Polar World [00:15.75]We have polar bears and a real iceberg too! [00:19.45]You can only see a small part of it [00:21

发表于:2018-12-04 / 阅读(310) / 评论(0) 分类 北师大版高中英语模块3

At the Edge of the Sea The shore is an ancient world, for as long as there has been an earth and se a there has been this place of the meeting of land and water. Yet it is a world that keeps alive the sense of continuing creation and of the relentle

发表于:2018-12-31 / 阅读(103) / 评论(0) 分类 英语名著名段背诵精华

JEFFREY BROWN:And now to part two of our investigative look at the safety of America's drinking water. Science correspondent Miles O'Brien reports on the toxic chemical made famous in the movie Erin Brockovich, its potentially harmful effect on human

发表于:2019-01-27 / 阅读(38) / 评论(0) 分类 PBS访谈环境系列

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

发表于:2019-02-03 / 阅读(92) / 评论(0) 分类 2007年VOA标准英语(五月)

Now, the going gets tougher. The next stage introduces entities that are significantly more fragile, significantly more vulnerable, 现在,(变化的条件)就更加苛刻了。下一个阶段是初次形成的个体,个体是明显更加弱小

发表于:2019-02-14 / 阅读(43) / 评论(0) 分类 TED演讲教育篇

台湾籍旅美老师今天交给我们的句子是: Well the water itself doesn't have any sugars or proteins like food so microbes aren't consuming it and rotting it. However, that's not to say the chemistry of the water hasn't changed. 水并不像

发表于:2019-03-05 / 阅读(136) / 评论(0) 分类 留美老师带你每日说英文