布什夏威夷演讲(2)

初中英语牛津八年级下01(2)

讲述意大利比萨斜塔Why does the tower lean? In fact,it was already leaning while they were building it. As soon as three floors had been built,by 1178, it began to lean as the ground beneath it...

发现

美文Discovery by Diane Ackerman The word “discovery” literally means, uncovering something that’s hidden from view. But what really happens is a change in the viewer. The familiar offers co...

肯尼亚乡村可上网 (2)

Ann ArborThomas Zurbuchen The project began back at the College of Engineering in Ann Arbor, Michigan, in 2007. That was when 25 students in a class taught by Thomas Zurbuchen first talked about ...