化简：-九年级数学

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• 计算：．-九年级数学
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• — How long_________in Hong Kong?— For just the weekend. I’ll be back next Monday morning.A．have you
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• 下列运算正确的是[]A．3a3×2a2=6a6B．4a2÷2a2=2aC．3=2D．-九年级数学
• Ladies and gentlemen, please fasten your seat belts. The plane _____.A．takes offB．has taken offC．too
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• 计算：．-八年级数学
• 化简：=（）-九年级数学
• （1）计算：+；（2）已知a=，求（）÷a的值；（3）解方程：x2﹣4x+1=0；（4）解方程：（x﹣1）2﹣3（x﹣1）=0．-九年级数学
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• --Bob, How is your project? I heard you started it last Friday, right? ---Oh, I ____for it. But I ha
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• 计算：．-九年级数学
• 计算的结果是[]A．6B．C．2D．-九年级数学
• -八年级数学
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• 化简：-九年级数学
• 计算：=（）.-九年级数学
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• 计算：4﹣3=()．-九年级数学
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• Why don’t you put the meat in the fridge? It will ________ fresh for several days. A．be stayedB．stay