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- 4our class has fifty —five students this term.(同义句改写)—— —— —— —— in our class.
- 5一物体倾角为a的斜面下滑时,恰好做匀速运动,若物体具有一初速度冲上斜面,则上滑时物体加速度为————
- 6I don't like summer 英语作文
- 7已知sinθ和cosθ是关于x的方程8x²+12x+2k+1=0的两个实根,试求实数k
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- 9试说明当a为整数a的三次方减a能被6整除?
- 10月球引力会引起潮汐,那地球上其他的东西呢?