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计算:-八年级数学
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若有意义,则x的取值范围是-九年级数学
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(2011•成都)设,,,…,.设,则S=_____________(用含n的代数式表示,其中n为正整数).-八年级数学
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2的平方根是()A.±B.C.±4D.4-八年级数学
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Mary ___ a dress when she cut her finger.A.madeB.is makingC.was makingD.makes-英语
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比较大小:-九年级数学
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In order to find the missing child, the villagers___________ all they can in the past five hours.A.
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25的算术平方根是A.5B.±5C.D.±-九年级数学
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计算:-九年级数学
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My plane at 8:30 am, so I _______ home at 8:00 tomorrow morning.A.leaves; leaveB.leaves; am leavingC
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若式子在实数范围内有意义,则x的取值范围是()A.x>5B.x≥5C.x≠5D.x≥0-八年级数学
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The teacher said that the sun _____ bigger than the moon.A. isB.wasC.hasD.have-高一英语
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在实数范围内定义运算“”,其规则为:,则方程的解为-九年级数学
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When he woke up,he found himself _________in bed and ________by some children.A.laying;surroundedB.l
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已知,则的值为()A.B.C.D.-八年级数学
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、(2011?常州)在下列实数中,无理数是()A.2B.0C.D.-八年级数学
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计算:-八年级数学
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---Where have you been recently? --- I _______ in Hangzhou on business for a week last month.A.have
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(本题8分)计算:-九年级数学
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()A.3B.C.D.9-九年级数学
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By the time you have finished this book, your meal ______ cold.A.getsB.has gotC.will getD.is getting
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已知用含的代数式表示.甲、乙两位同学跑上讲台,板书了下面两种解法:同学甲解:同学乙解:因为,.老师看罢,提出下面的问题:(1)两位同学的解法都正确吗?为什么?(2)请你再给出-九年级数学
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已知、为实数,且满足求的值-九年级数学
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Before us lies the biggest room, _____ with things like guns, dolls and old clothes.A.fillingB.fille
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请你观察思考下列计算过程:因为112=121,所以=11;同样,因为1112=12321,所以=111;…由此猜想=_-九年级数学
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计算的结果是()A.2B.4C.8D.16-九年级数学
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在实数范围内定义一种运算“*”,其规则为a*b=a2-b2,根据这个规则,方程(x+2)*3=0的解为-九年级数学
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Half an hour has been made full ______ of _____ the problem.A.using; studyingB.use; to studyC.to use
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计算的结果是()A.2B.±2C.-2D.4-九年级数学
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计算:(本题每小题4分,满分8分)(1)求右式中x的值:4(x+1=64(2)-八年级数学
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若,则的值为A.B.C.D.-九年级数学
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4的平方根是A.B.2C.±2D.-九年级数学
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-八年级数学
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-八年级数学
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计算:-九年级数学
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