中考数学基础复习-数与式综合检测题

—/r/n—/r/n—/r/n—/r/n—/r/n—/r/n

/r/n初中数学毕业总复习总复习知识检测试卷/r/n(一)数与式/r/n分值：100分时量：120分钟命题人：李维军审题人：李/r/n一、填空题（每小题3分，共30分）：/r/n1．若m，n互为相反数，则m+n=。/r/n题 /r/n2．化/r/n简/r/n7/r/n/r/n/r/n7/r/n答/r/n /r/n7/r/n得 /r/n3．分解因/r/n

/r/n=，/r/n2/r/n=。/r/n3/r/n2/r/n /r/n。/r/n不 /r/n7x/r/n/r/n/r/n63/r/n/r/n内 /r/n4．若分/r/n式/r/nx/r/n/r/n1/r/n的值为零，则/r/n/r/nx/r/n/r/n的值为/r/n线 /r/nx/r/n/r/n/r/n1/r/n封 /r/n5．小说《达·芬奇密码》中的一个故事里出现了一/r/n密/r/n—/r/n串神秘排列的数，将这串另人费解的数按从小到大的顺序排/r/n级/r/n—/r/n级/r/n班/r/n—/r/n列为：1，1，2，3，5，8，…，则这列数的第8个数是。/r/n班/r/n名/r/n—/r/n名/r/n姓/r/n— /r/n6/r/n．计算：/r/n12/r/n/r/n3/r/n/r/n3/r/n/r/n姓/r/n号 /r/n—/r/n考/r/n题 /r/n7．如图，数轴上表示/r/n答/r/n考/r/n得/r/n

/r/n3/r/n的点是。/r/n不 /r/nA/r/n内 /r/n-5 /r/n-4 /r/n-3 -2 /r/n-1 /r/n0 /r/n8．/r/n线/r/n8．/r/n

/r/nB C/r/n2 /r/n3 4 5/r/n

/r/n(/r/n5/r/n/r/n/r/n/r/n/r/n2sin/r/n30/r/no/r/n/r/n(/r/n=。/r/n封 /r/n9．计算：/r/na/r/n2/r/n/r/n=。/r/n—/r/n密 /r/n10．计算：/r/n/r/n4a/r/n—/r/n— /r/na/r/n2/r/n/r/n/r/n

/r/n1/r/n/r/na/r/n的结果是。/r/n/r/na/r/n— /r/n二、选择题（/r/n每小题/r/n3分，共30/r/n）：/r/n题/r/n1/r/n1/r/n题/r/n1/r/n1/r/n1/r/n1/r/n1/r/n1/r/n1/r/n1/r/n1/r/n1/r/n2/r/n总/r/n1/r/n2/r/n3/r/n4/r/n5/r/n6/r/n7/r/n8/r/n9/r/n0/r/n计/r/n9/r/n—/r/n9/r/n—/r/n/r/n号/r/n /r/n0/r/n选/r/n项/r/n举世瞩目的三峡大坝的所装发电机组全部投入运行/r/n847/r/nA/r/n847/r/n/r/n/r/n10/r/n8/r/n度/r/nB．/r/n8.47/r/n/r/n/r/n度/r/nC/r/n8.47/r/n/r/n/r/n度/r/nD/r/n84.7/r/n/r/n/r/n度/r/n若/r/na/r/n5/r/na/r/n（）/r/nA．－５ B．/r/n1/r/n /r/nC．/r/n/r/n1/r/n5 5/r/nD．５/r/n13．计算：２－３＝（）/r/nA． /r/nA．１ B．－１ Ｃ．５ /r/nA． /r/n3x/r/n/r/n2x/r/n/r/n1 /r/n3x/r/n/r/n2x/r/n/r/n/r/nC．/r/n3x/r/n/r/n2x/r/n/r/n/r/n6x/r/nD．/r/n3x/r/n/r/n2x/r/n/r/n/r/nx/r/n冬季的一天，室内温度是/r/nC/r/n，室外温度是/r/nC/r/n室内外温度相差（）/r/n．/r/no/r/nC/r/nB．/r/no/r/nC/r/n．/r/n1/r/no/r/nC/r/nD/r/n．/r/n1/r/no/r/nC/r/n若/r/n/r/n0<x<1，/r/n则/r/n的大小关系是（）/r/nA．/r/nx/r/n/r/n/r/nx/r/n2/r/n/r/n/r/nB．/r/nx/r/n/r/n/r/n/r/n/r/nx/r/n2/r/nC．/r/nx/r/n3/r/n/r/n/r/nx/r/n2/r/n/r/n/r/nx/r/nD．/r/nx/r/n2/r/n/r/n/r/nx/r/n3/r/n/r/n/r/nx/r/n17．函/r/n数/r/ny/r/n/r/n /r/nx/r/n/r/n2/r/n中自变量/r/n/r/nx/r/n的取值范围是/r/nA．/r/nx/r/n/r/n/r/nB．/r/nx/r/n/r/n/r/n2/r/nC．/r/nx/r/n/r/n/r/n2/r/nD．/r/nx/r/n/r/n/r/n2/r/n

/r/n与/r/n

/r/n的值相等，则x的值是（）/r/nx/r/n/r/n1 x/r/n/r/n/r/n3/r/nA．9B．7 /r/nC．5D．3/r/n计算： /r/nm/r/n/r/n/r/n /r/n6 /r/n/r/n /r/n2/r/n/r/n的结果为（）/r/nm/r/n/r/n/r/n3/r/n9/r/n/r/n/r/nm/r/n2 /r/nm/r/n/r/n/r/n3/r/nA．1B．/r/nm/r/n/r/n3/r/nC．/r/nm/r/n/r/n3/r/nD．/r/n/r/n3m/r/nm/r/n/r/n3 m/r/n/r/n3 m/r/n/r/n/r/n3/r/n已知/r/n

/r/n2/r/n

/r/nx/r/n/r/n的值为（）/r/nx/r/n/r/n/r/n1/r/nA．/r/n2/r/n/r/n /r/n2/r/nB．/r/n2/r/n

/r/n2/r/nC．/r/n2/r/n/r/n /r/n3/r/n

/r/nD．/r/n2/r/n/r/n /r/n2/r/n3/r/n三、解答题（共40分）/r/n21．已知/r/n(a/r/n/r/n/r/n/r/n/r/n/r/n1/r/n，/r/n(a/r/n/r/n/r/n/r/n/r/n/r/n25/r/n，求/r/na/r/n2/r/n/r/n/r/n/r/n/r/nab/r/n的值。/r/n22/r/n

/r/ntan/r/n60/r/no/r/n/r/n/r/n /r/n2 /r/n()/r/n/r/n(x/r/n/r/n/r/n/r/n/r/n/r/n1/r/n/r/n1 2 /r/n/r/n/r/n/r/n1/r/n/r/n1 2 /r/n2/r/n．先化简，再求值：/r/n(/r/na/r/n2/r/nb/r/n/r/n2a/r/n2/r/n/r/n/r/n/r/n3/r/n)/r/n/r/nb/r/n/r/n(a/r/n/r/n/r/nb)(a/r/n/r/nb/r/n)/r/n，其中/r/na/r/n/r/n/r/n1/r/n,b/r/n/r/n/r/n/r/n1/r/n。/r/n2/r/n先化简，再求代数式/r/na/r/n/r/nb/r/n/r/n(a/r/n/r/n/r/n2ab/r/n/r/n)/r/n的值，其中/r/na a/r/na/r/n/r/n/r/n3tan30/r/no/r/n/r/n/r/n1/r/nb/r/n/r/n /r/n2/r/ncos45/r/no/r/n。/r/n传销是一种危害性极大的非法商业诈骗活动，国家是明令禁止的，参与传销活动的人，最终是要上当受骗的。据报道，某公司利用传销活动诈骗投资的人，谎称“每位投/r/n资者每投资一股450/r/n10/r/n530/r/n2/r/n1/r/n16/r/n公司破产了。/r/n假设张大爷在该公司破产的前一期停止投资，他/r/n的投资回报率是多少？/r/n（/r/n/r/n/r/n回报金额/r/n/r/n/r/n投资额/r/n/r/n/r/n100%/r/n）/r/n投资额/r/n试计算张大爷在参