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- 1分别用and,so,but,enjoy造句
- 2一个多项式与x^+xy-y^的和是2x^+xy+3xy^,则这个多项式为多少?
- 3英语翻译
- 4英语翻译
- 5yes there are 和yes they are
- 6已知一个多项式与3x2+9x的和等于3x2+4x-1,则这个多项式是( ) A.-5x-1 B.5x+1 C.-13x-1 D.13x+1
- 7Mary was only too ready to help others,seldom,if ever,refusing them when they turned to him.
- 8英语翻译
- 9一吨碎石土等于多少立方米,
- 10you don't need to ask anybody for help.改为同义句 you need- - for help