整数加法运算定律推广到分数
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压强乘以面积等于什么
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ComputerThe computer is fast,and never makes a mistake while people were too slow and full of mistakes sometimes.That’s what people often say when they talk about computers.For over a quarter of a century,engineers have been making better computers
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It was a cold spring morningin London.People walking in the street were wearing heavy clothes.The weather had beenvery bad for the past week,and now many people were ill.Today there werequite a few people in the doctor’s waiting room.There were sti
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