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- 3x的20％与15的差的一半等于负二,请列方程
- 4蜜蜂
- 5Are you afrid your friend would not understad what you are going through?
- 6The lights on both sides of the road shine _____(bright) at night.
- 7设随机变量X~F(n,n),证明P(X
- 8We had a good time at the party yesterday 同义句 We____ ____ at the party yesterday
- 9声音在现实生活中传递能量的实例
- 10已知(a^2+1)(3x-y)=0 求(4x^2-3xy+2y^2) / (x^2-2xy-y^2)