的平方根是[]A、B、C、3D、-3-八年级数学

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• 81的平方根是______；近似数15520保留两个有效数字为______，时，精确到______位．-数学
• Only when I left my hometown ________ how precious it is to me. [ ]A. did I realizeB. I realizedC. h
• — Wouldyouhavehelpedher,haditbeenpossible?— Yes,butI__________busywithmywork. [ ]A.wasB.hadbeenC.hav
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• 单词拼写。 请认真阅读下列各句，并根据各题所给的首字母或中文提示，在横线上，写出一个英语单词的完整、正确的形式，使句子通顺。 1. The driver I ____the danger sign -
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• 1.44的平方根是______．-数学
• 若x2=64，则x=______．-数学
• 16的平方根是______，8的立方根是______，4=______．-数学
• 短文改错。 下面文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。 增加：在缺词处加一个漏字符号（∧），并在该句下面写出该加的词。 删除：把多余的词用斜线-高三英语
• —Have you got the news about Jack? I haven't seen him for many years.— He _____ in a company fo
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• 如果x4=1681，那么x=______．-数学
• 下列说法：①0.027的立方根是0.3；②3a不可能是负数；③如果a是b的立方根，那么ab≥0；④一个数的平方根与其立方根相同，则这个数一定是1．其中正确的是______．-数学
• 计算：16=______；±9=______．-数学
• 2=______2．-数学
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• 25的平方根是______．-数学
• 下列选项中正确的是（）A．27的立方根是±3B．16的平方根是±4C．9的算术平方根是3D．立方根等于平方根的数是1-数学
• 若4x2=9，则x=______．-数学
• 求x值：4x2=25．-数学
• The scientist told the reporter that only after he went abroad ______ what his motherland meant to h
• When he was in trouble, I offered to lend him a hand, but he ________. [ ]A. has refused B. would ha
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• 短文改错。 假如英语课上老师要求同桌之间交换修改作文，请你修改你同桌的以下作文。文中共有10 处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加，删除或修改-高三英语
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• （______）2=64．-数学
• 81的平方根是______．-数学
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• 81的平方根是______；16的算术平方根是______．-数学
• 单词拼写。1. The proposal _____ (支持) by a large majority of the teachers was accepted. 2. We were shocked
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• 短文改错。 It is five years now since I graduate from High School Attached to Harbin Normal University. L
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• 解方程：（1）x2=9（2）13y2=12．-数学
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• 已知甲数是179的平方根，乙数是338的立方根，则甲、乙两个数的积是______．-数学
• — Has your former classmate come back from America? — Yes, he _______ there for eight years. [ ]A. h
• Theparentswereunsettledforthefirstfewdays,_____abouttheirson'ssafety.[ ]A.havingworriedB.toworr
• 下列说法正确的是（）A．14是0.5的一个平方根B．正数有两个平方根，且这两个平方根之和等于0C．72的平方根是7D．负数有一个平方根-数学