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- 1英语翻译
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- 3do you think tom could pass the exam?
- 4多项式x3+x2,x2+2x+1,x2-x-2的公因式是 _.
- 5连接圆心和圆上任意一点的线段叫做_,用字母_表示;通过圆心,并且两端都在圆上的线段叫做_,用字母_表示.
- 6have difficulty in doing sth .have trouble in doing sth
- 7求函数y=7-4sinxcosx+4cos2x-4cos4x的最大值与最小值.
- 8酒精灯哪个部位火焰温度最高
- 9-----We've been working for three hours.
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