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- 1虚拟语气选择题.Our former maths teacher moved to Beijing last year,otherwise,he ()us.
- 2给你下列器材:托盘天平、砝码、量筒、盛满水的烧杯和一盒大头针.请你测出一枚大头针的质量和体积,并写出实验的步骤和必要的计算过程
- 3will to be going to be about to do be to 有什么区别?
- 4The river is 4 metres deep 为什么不能说 The river is 4-metre-deep?有什么区别吗?
- 5鸡兔同笼,有50只脚,20个头,问鸡和兔共有多少只
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- 7已知,在△ABC中,AB=AC,D是BC边的中点,P是AD上任意一点,PE⊥AB于E,PF⊥AC于F.试说明:(1)PE=PF;(2)PB=PC.
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- 9it was too dark for me to see anything的同义句
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