．-九年级数学

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• （本题满分8分）化简二次根式：小题1:（1）小题2:（2）（＜0）-九年级数学
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• ——Lily is going to make a presentation in class this afternoon.—Oh, really? I _____it was Michael’s
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• 要使式子有意义，a的取值范围是（）A．B．C．a≤2D．a≥-九年级数学
• 先化简，再求值：，其中a=-1.-九年级数学
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• 计算：＝.-九年级数学
• 计算：小题1:（1）；小题2:（2）．-八年级数学
• Whether ways will be found to help China _______ the current world financial crisis is just _______
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• 小题1:（1）计算：．小题2:（2）解方程：-九年级数学
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• —_____ you _____ the sitting room? —Yes. It is 7 meters long and 4.5 meters wide.A．Can; measure B．Ar
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• 函数中，自变量的取值范围是（）．A．＞B．≥C．≤D．≠-八年级数学
• 化简-八年级数学
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• （本小题满分9分）化简：已知，．-九年级数学
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• 如果有意义，那么字母的取值范围是▲.-九年级数学
• （本题满分8分）小题1:（1）小题2:-九年级数学
• 若=1－a，则a的取值范围是.-九年级数学
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• 下列计算正确的是A．B．C．D．-八年级数学
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• 化简▲．-九年级数学
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• — I'm leaving tomorrow.— Oh, what a pity! I won't be able to see you off. I ____ a tele-co
• 若最简二次根式和是同类二次根式，那么a=；b=-九年级数学
• 已知，则x的取值范围是-九年级数学
• 计算：=-九年级数学
• 比较二次根式的大小：-九年级数学
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• 化简：____________．-九年级数学
• How the fire in the dancing hall started _________ a mystery.A．to remainB．remainsC．is remainingD．is
• — Can we see your manager now?— I’m afraid not. He ______ a meeting for nearly two hours and I’ve n
• 实数在数轴上对应点的位置如图所示，则化简的结果为（）A．－2a+bB．2a－b+2cC．bD．－b-九年级数学
• We are satisfied with his job in our company. Everything goes better now than when he his work here.
• It was difficult to get a word in. Everyone＿＿＿so excitedly about the play.A．talked B．was talking C．w
• 计算：___________．-九年级数学