单词:ETKAC
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The first day Time to get up. Are you up yet? Wake up! Come on,sleepy head. I'm already awake,is it time to get up? Practice: Listen and repeat. I over slept. I can sleep in tomorrow. I am still sleepy. I am awake. Wake up! Get up! Are you asleep? A
Graph Search的理念在于,以谷歌搜索引擎发掘互联网信息的方式,发掘Facebook网站社交图谱的含义。Graph Search扩展了Facebook的核心使命:不仅帮助用户与已知的他人建立联系,还能成为一款发现工
It started with a simple experiment: take some graphite - the black stuff in the middle of a pencil - and put a piece of tape over it. When the scientists at the University of Manchester did that, they found that they could develop a material that co
Graphene Called Amazing, Versatile Material of the Future 前景光明的多功能材料石墨烯 In 2004, two scientists at the University of Manchester in England isolated a carbon-based material called graphene, with some unusual properties. Andre
Beginners. It's very interesting going to another country and experiencing the culture, even if the people from that country speak the same language. Among English speaking nations, there are well known differences. Our accents are different, of cour