The History of Chemistry
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童话故事: 爱丽丝漫游奇境记06
DodoCaucus RaceMouse AliceDinahThe Dodo,a big ugly bird,said, "Let's have a Caucus Race." No one knew what a Caucus Race was. The animals and birds just ran in a circle. After half an hour,the Do...
科学60秒:存在钻石星球?
Imagine climbing diamond mountains, or hiking around the graphite shores of a lake of tar. Sound a little sci-fi? Well a new discovery suggests planets like that might be out there—planets with...
快乐之门
短文The Happy door Happiness is like a pebble dropped into a pool to set in motion an ever-widening circle of ripples. As Stevenson has said, being happy is a duty. There is no exact defini...
美国政治:参议院预算投票
生词:federal 联邦的Americans are split on the possibility of a government shutdown. According to a recent survey, 46 percent of people say a shutdown would be good because it would stop the gove...