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- 1I can still remember when I MET MY BEST FRIEND.完形
- 2一小球质量为M,被一绳子拴着在竖直平面内做圆周运动,在最高点的拉力为零,问在最低点的拉力
- 3已知实数a,b,c满足1/2|a−b|+2b+c+(c−1/2)2=0,求a(b+c)的值.
- 4This blue cap is mine.( 对blue提问)
- 51根钢管长15米,截取全长1/3,15*(1-1/3)问题是剩下比截去多多少米吗?
- 6动名词与动词ing 不定式 一不一样,有啥子区别
- 7气体压强和大气压有什么区别
- 8When l workde along the street,I was surprised to find that many people were wearing
- 9电磁波的波长和频率怎么改变?
- 10hold a class meeting,have a sport meet,能说have a sport meeting么?