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- 1we found the books two days__he had gone away.请问填什么呀?
- 2Have you decided what you want to do after school
- 3定义一种运算“*”,对于正整数n满足以下运算性质:(1)1*1=1,(2)(n+1)*1=3(n*1)则n*1用含n的代数式表示是 _.
- 4用英语翻译几句话!
- 5This is ( ) news.A.such a good B.a very good C.so good a D.such good 应该选哪个答案?
- 6(分数、百分数应用题)
- 7抛物线y=-x^/2与过点M(0,-1)的直线相交于AB两点,O为坐标原点,若直线OA和OB的斜率之和为1,求直线的方程
- 8不锈钢板密度多少
- 920和8的最小公倍数是( ),最大公因数是( )
- 10写雪花的诗句