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- 22012年东至也许地球会失去引力,这是真的吗?
- 3Can the girl play the gueitar?(作否定回答)
- 4一次函数y=kx+b与y=2x+1平行,且经过点(-3,4),则表达式为:_.
- 5Five years ago nobody knew him,although he______(write)more than 100 songs.
- 6已知关于x,y的方程组{2x+y=5m+6,x-2y=-17
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- 8做不来.
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