There'sAHoleInTheMiddleofthe Road 路中央有个洞 (1)There'sAHoleInTheMid-dleoftheRoad, There'sAHoleInTheMid-dleoftheRoad, There'sAHole,there'sAHole,There'sAHoleInTheMid-dleoftheRoad. (2)There'sarockintheholeinthemiddleoftheroad, There'sarockinthe

发表于:2018-12-14 / 阅读(50) / 评论(0) 分类 Wee Sing In The Car

By Jerilyn Watson Broadcast: November 27, 2003 This is Steve Ember with the VOA Special English Education Report. More than nine-million children in the United States attend public middle schools. Mid

发表于:2019-01-02 / 阅读(46) / 评论(0) 分类 VOA2003(下)-教育与新闻

Don't change horses in the middle of the stream to jump on the bandwagon 美国的民意测验显示,布什总统落后于民主党候选人克林顿。这使人想起在十九世纪美国内战期间

发表于:2019-01-09 / 阅读(92) / 评论(0) 分类 美国习惯用语

37 研究表明2500万年前流星曾碰撞过地球 DATE=4-18-01 TITLE=SCIENCE REPORT - Meteor Collision With Earth BYLINE=Jill Moss (Start at 59

发表于:2019-01-16 / 阅读(82) / 评论(0) 分类 科技之光

Science and technology 科学技术 Mass extinctions 大灭绝 Small but deadly 陨石很小不过危害却很致命 The biggest extinction in history was probably caused by a space rock that changed the climate 历史上规模最大的一次物种灭绝

发表于:2019-02-06 / 阅读(27) / 评论(0) 分类 经济学人科技系列

Earth has seen five major extinction episodes in its time the Ordovician, Devonian, Permian, Triassic, and Cretaceous, in that order and many smaller ones. 地球已经目睹了5次大的灭绝事件依次在奥陶纪、泥盆纪、二叠纪、三叠纪

发表于:2019-02-17 / 阅读(35) / 评论(0) 分类 万物简史