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- 1I tried to wake my wife wife by ringing doorbell中的by什么意思
- 2Did they have fun___(visit) Weifang yesterday
- 3While I will be away ,can you help my grandma with the housework?
- 4在一个减法算式中,被减数是七分之十五,那么被减数·减数·差这三个数的和是多少?
- 5微积分求解:∫x / (x+1) dx
- 6《桃花源记》中表现桃花源社会环境平静的句子是 _________________ ,__________________.
- 7体 ()无() 补充词语
- 8打谷场上,有一个近似于圆锥的小麦堆,测得底面周长是9、42米,高是1、2米,每立方米约重750千克.
- 9连词成句:Tom's a school in father is a teacher
- 10已知X属于【1/27,1/9】,函数f(x)=log3(x/27)*log3(3x),若方程f(x)+m=0有两实根b,d,试求db的值.