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- 1如图,在平行四边形ABCD中,E,F分别是DC,BA延长线上的点且AE‖CF,交BC,AD于点G,H,求证:EG=FH
- 2They were told that Brown was going to ___ a speech in the hall that evening.
- 3已知三角形ABC两个顶点坐标为A(-2,0),B(2,0),第三个顶点C在曲线y=3x^2-1上移动.求三角形重心的轨迹方程
- 4x-y+z=0,x+y-5z=o,xyz≠0,求x^2+y^2+z^2/2x^2+y^2-z^2的值
- 5人教版六年级下册语文18课《跨越百年的美丽》你觉得居里夫人是怎样的人?
- 6I want to be a flight attendant and then I ___ ___ able to travel around the world.
- 7Jazz 107.9 FM plays the most__ music.We all enjoy it.A interested B boring C interesting D loud
- 8酸碱盐属于有机物还是无机无机物
- 9数学已知A=3m²-5m+1,B=﹣m²-5m+2,当m=﹣2分之1时,则A-B=
- 10计算并找规律