湘教版八年级数学上册期末复习专题课件CCBCACAD323相消相消期末提分练案BDCDBBB【答案】【答案】A(x1)(x1)24【答案】【答案】1 200;10 800期末提分练案C【答案】【答案】DACA【答案】【答案】B【答案】【答案】DB假设一个三角形中至多有一个锐角假设一个三角形中至多有一个锐角6040期末提分练案BBBAD【答案】【答案】A【答案】【答案】D【答案】【答案】D【答案】【答案】8 s【答案】【答案】35期末提分练案BDBCDDA【答案】【答案】C5312期末提分练案CCBADBABx11(或或2或或3)710期末提分练案CADBCA【答案】【答案】DA2,1,0,1245期末提分练案BAAADDDBDC5534【答案】【答案】10