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- 1when she knows she is going to give a talk in front of the class,she feels ______ at once.
- 2There are______more people in the department stores on Sundays than usual A.many B.much C.so
- 3x的四次方-4x²+3等于多少?
- 4题个问题希望大家帮忙 物理的~!@
- 5美丽的规则 这篇课文讲了一件什么事
- 6已知f(x)为偶函数 且f(x)=f(x+4) 当-2小于等于x小于等于0时 f(x)=2^x 则f(2009)=
- 7△ABC的三个内角A,B,C所对的边分别为a,b,c,asinAsinB+bcos²A=2a,(1)求b/a,(2)求A的取值范围.
- 8I ( )(fly) a kite yesterday
- 9加速度不断变化的直线运动的位移计算
- 10一个长方体的表面积是236平方厘米,它的长是8厘米,宽是6厘米,这个长方体的高是多少厘米?