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- 1Her parents()lunch at home.A.doesn't have B.haven't C.hasn't D.don't have
- 2F'Cl'Br'I的非金属性为什么越来越弱?
- 3已知m-n=4,mn=2,求多项式(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值.
- 4硫酸钡是强电解质 它的水溶液导电吗
- 5there are many famous prediction than nrver came true
- 6一个小数的小数点向右移动1位,得到的新数比原来的数大38.88,原来的小数是多少?
- 7倒数是它本身的数为——————(填空) 相反数是它本身的数为——————
- 8I gave them the lesson instead of you yesterday.翻译
- 9一汽车从甲地开往乙地,先从静止从甲地出发加速度a1,作匀加速运动,再...
- 10已知二次函数的图像经过原点及(-1/2,-1/4)且图像与x另一交点到原点的距离为1,求此二次函数的解析式