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- 1英语翻译
- 2A=2i+3j (A为向量,i ,j分别为x,y轴的单位向量) 求向量A的大小
- 3I like playing _______ basketball but I don't like playing ___________piano
- 4英语演讲:Do you like sports?What is your favorite sports?Why
- 5一列数,前两个数是1,3,从第三个数开始,每个数都是它前面两个数的和,即1,3,4,7,11,18,29,…到第2006个数为止,共有_个奇数.
- 6"I met him in the street yesterday"改为强调句该怎么改
- 7500g=___mg 20kg=___ t 80mg=____ kg
- 8There are many students watching the volleyball match on side of the playground.
- 9《别饿坏了那匹马》:青年对我说别饿坏了那匹马这样做对吗?为什么?
- 10如图,在△ABC中,CD是AB边上的中线,且有AC2+BC2=4CD2. (1)探究△ABC是否为直角三角形; (2)证明你的结论.