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英语发音说不标准怎么办
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关于C语言语句含义C语言中 比如XX+=YY XX\=YY
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they spent as many hours as they could _______ their lesson
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Jane liked ____ acting out when she was a little girl.she wi
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赞美文采好的成语
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They disappear forever in my
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连词成句plane,explosions,in ,many,great,a,there,were,the,crash
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求 徐小平的文章
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求你的9分达人雅思听力真题还原及解析,谢谢~
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已知双曲线x^2/a^2-y^2/b^2=1(a>0,b>0)的离心率为e=2根号3/3,过A(a,0),B(0,-b)
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56加56等于R?
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很奇妙的数学问题（很简单）困扰我很久,
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关于 “回忆”这一主题的作文结尾.
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5.7.7.9(怎样算24点)
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某圆台的一个底面周长是另一个底面周长的3倍，轴截面的面积等于392cm2，母线与轴的夹角为45°，则这个圆台的高为（
