单词：mass of a body
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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? How do you know the moon is not made of green cheese? Theoretical physicist Sean Carroll at the ScienceWriters2011 conference in Flagstaff on October 17th. Well, we know
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本月8号，伟大的物理学家史蒂芬霍金将迎来他70岁寿辰，为此他接受了《新科学家》杂志的采访，当被问到白天思考的最多的是什么时，霍金教授语出惊人：是女人，女人完全是个谜。 史蒂芬
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51, fill a prescription 按处方抓药 Would you please fill this prescription for me? 52, fill in for 代替; 同义：fill ones place(position, shoes); take the place of; take over Say, Dave, can you fill in for me tonight at the restaurant? Id li
英语口译
听力题目： 19.(A). She stops by the center every morning. (B). She no longer buys her morning coffee at the center. (C). Her coffee is better than the coffee at the student center. (D). Her cough could be heard all over the student center. 20.(A
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What is the cosmological effect of singer Zayn Malik leaving the best-selling boy band One Direction and consequently disappointing millions of teenage girls around the world? 歌手泽恩马利克退出热门的单向男孩乐队，进而导致数以百
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雅思范文：大学应该开设什么课程 Which kind of courses should universities provide: theoretical knowledge or practical training? Some people prefer the later one and assert that the practical training can benefit our society. Personally,
雅思英语