如图,在三角形ABC中,角C=90度,E为BC边的中点.(1)尺规作图
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"do you know our town at all?" "no,this is the first time i
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The next morning she found the man __in bed.
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__ __ __Shanghai ,they ate a lot of delicious food.
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this old man is healthy because he often 填什么单词
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已知三角形ABC,角A.B.C的对应边为a.b.c,A=2B,cosB=根号6/3,
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翻译They found him already in the hands of a doctor.
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2008年全年时事政治有哪些?
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beijing is interesting city
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满族八旗姓氏姓李,内蒙古人.请问以前的姓氏,
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u活任务到底有什么意义?
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在递增等差数列{an}中a4=-3,a1-2,a3,a5成等比数列求{an}和公差d
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如图7所示,一束光线射向O出的光学元件后,会聚在其主光轴上的S’点；当去掉光学元件后,光线会聚于S点.
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水果店原有梨和苹果共360箱.梨卖出50箱,又运进苹果80箱,这时苹果的箱数正好是梨的2倍.水果店现有梨和苹果各有多少箱
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作文：我的精彩800字
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在分数c分之a和c分之b中,因为a>b,所以c分之a大于c分之b.对错
