初二入学考试试卷
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八年级入学考试试卷一、积累与运用(共13分)1.下列加点字注音全部正确的一项是:()A.惩罚(chãnɡ)凛冽(lǐn)怂恿(cïng)戛然而止(jiá)B.亘古(ɡân)胆怯(qiâ)崔巍(wēi)怏怏不乐(yànɡ)C.阔绰(chuî)脚踝(huái)驾驭(yù)叱咤风云(chà)D.蝉蜕(tuì)拓荒(tà)脑髓(suí) 浑身解数(xiâ)2.下列词语书写完全正确的一项是()A.尽态极妍斑斓迥乎不同义愤填膺B.锲而不舍告磬姗姗来迟博学多识C.人声鼎沸阴霾毛骨悚然锋芒必露D.沥尽心血深邃略胜一畴妇孺皆知3.下列加点的成语使用有误的一项是()A.欧债危机爆发后,一些外向型小微企业陷入了进退维谷的境地。
B. 看到电影《可可西里》中藏羚羊被盗猎分子枪杀的惨状,我们无不感到义愤填膺。
C. 听完演讲后,春江由衷地说:“李老师的这番演讲抛砖引玉,我们受益不浅。
”D.为了揭示中华文化的传承规律和深远影响,他潜心贯注,耗费了毕生精力。
4.下列句子没有语病的是()A.在建设过程中,无论工人们遇到怎样的困难,他们却能一往无前。
B.在列车长粗暴干涉下,使爱迪生在火车上边卖报边做实验的愿望破灭了。
C.中国残疾人艺术团演出的大型舞蹈《我的梦》,受到观众的热烈欢迎。
D.英语组的王老师是最近新调入我校的,许多同学还不认识。
5.下面是《〈宗璞散文选集〉序》中的一段话,①~⑤句顺序最恰当的一项是()①紫藤萝开得恣肆风流,辉煌灿烂②不管是宏观的飞动闪光的瀑布③但又端庄雅淑得寂寞④或是一朵张帆航行的船舱⑤都在读者心中造成充满生命的张力A.②④①③⑤B.①⑤③②④C.②④⑤①③D.①③②④⑤6.课外名著阅读。
(3分)“……蝉在地下潜伏4年才能钻出地面,在阳光下歌唱5个星期;蟋蟀善建巢穴,管理家务;蜘蛛善于捕食、织网;螳螂善于利用“心理战术”制服敌人;樵叶蜂可以不用任何工具“剪”下圆叶片做巢穴盖子……”本文选自昆虫学家的《昆虫记》,该书被誉为“”。
一、选择题(每题4分,共40分)1. 下列数中,不是有理数的是()A. 0.5B. √2C. -3D. 1/22. 若a,b是方程x^2 - 4x + 3 = 0的两个根,则a+b的值为()A. 1B. 2C. 3D. 43. 下列函数中,是反比例函数的是()A. y = 2x + 3B. y = 3/xC. y = x^2D. y = 4x^34. 已知一次函数y = kx + b的图象经过点(2,5),则k和b的关系为()A. k = 2,b = 1B. k = 2,b = 5C. k = 1,b = 2D. k = 1,b = 55. 在等腰三角形ABC中,AB = AC,若∠B = 50°,则∠C的度数为()A. 50°B. 60°C. 70°D. 80°6. 若一个等边三角形的边长为a,则其周长为()A. 3aB. 4aC. 5aD. 6a7. 已知梯形ABCD的上底AB = 5,下底CD = 10,高AD = 6,则梯形ABCD的面积为()A. 30B. 45C. 60D. 758. 下列命题中,正确的是()A. 平行四边形对边相等B. 等腰三角形底角相等C. 矩形对角线相等D. 正方形四边相等9. 已知a、b、c是三角形的三边,且a + b > c,则下列结论正确的是()A. a + c > bB. b + c > aC. a + b + c > 0D. a + b + c = 010. 若x^2 - 5x + 6 = 0,则x的值为()A. 2,3B. 1,4C. 2,1D. 3,2二、填空题(每题5分,共25分)11. 分数2/3的分子和分母都乘以2,得到的新分数为______。
12. 若x - 3 = 5,则x = ______。
13. 在直角三角形中,若∠A = 90°,∠B = 30°,则∠C的度数为______。
一、选择题(每题5分,共50分)1. 下列各数中,绝对值最小的是()A. -3B. 2C. 0D. -52. 如果a > b,那么下列不等式中正确的是()A. a - b > 0B. a + b > 0C. a - b < 0D. a + b < 03. 已知函数y = 2x + 3,当x = 2时,y的值为()A. 7B. 5C. 3D. 14. 下列图形中,不是轴对称图形的是()A. 正方形B. 等腰三角形C. 圆D. 长方形5. 一个长方体的长、宽、高分别是3cm、2cm、4cm,它的表面积是()A. 28cm²B. 32cm²C. 36cm²D. 40cm²6. 下列代数式中,同类项是()A. 3x²和5x²B. 2xy和3xy²C. 4x和5xD. 2x²和3x³7. 如果sinα = 0.6,那么cosα的值是()A. 0.8B. 0.5C. 0.2D. 0.38. 下列关于实数的说法正确的是()A. 所有实数都是有理数B. 所有有理数都是整数C. 所有整数都是实数D. 所有无理数都是实数二、填空题(每题5分,共50分)9. 一个数的相反数是它的()10. 如果|a| = 5,那么a的值可以是()11. 在直角三角形ABC中,∠C是直角,那么∠A + ∠B的度数是()12. 两个正方形的面积分别是16cm²和36cm²,它们的周长比是()13. 已知函数y = 3x - 2,当x = 1时,y的值是()14. 一个数的平方根是±2,那么这个数是()15. 下列各式中,能表示圆的方程是()三、解答题(每题10分,共40分)16. 已知一元二次方程x² - 4x + 3 = 0,求它的解。
17. 在平面直角坐标系中,点A的坐标为(2,3),点B的坐标为(-1,5),求线段AB的长度。
初二数学入学测试题(含答案)姓 名 学校 成绩一、选择题(每道题7分,共42分)1.有理数a 、b 在数轴上的位置如图所示,那么下列式子中成立的是( )A .a<bB .a>bC .ab>0D .ba >0 2.下列说法错误的是( )A .1是2(-1)的算术平方根B .7)7(2=-C .27-的立方根是3-D .12144±=3.等腰三角形两边长分别为4,8,则它的周长为( )A .20B .16C .20或16D .不能确定4.二元一次方程2534=+y x 的正整数解有( )A .1个B .2个C .3个D .4个5.如果p (a -3,a+1)在第二象限,那么a 的取值范围是A .a>-1B .a<3C .-3<a<3D .一1<a<36.计算机的存储单位有:字节B ,千字节KB ,兆字节MB ,1MB =1024 KB ,1KB =1024B ,两个 字节相当于一个汉字,那么一张容量为1.44MB 的软盘最多可存储多少个汉字?用科学记数法表示为(保留三个有效数字)( )A .7.55×104B .7.55×106C .7.55×105D .7.54×104二、填空题(每题7分,共28分)7、不等式组⎩⎨⎧->+>--1214)2(3x x x x 的解集是_______. 8、已知△ABC 的高为AD ,∠BAD=70°,∠CAD=20°,则∠BAC 的度数是_______9.如果01622=-a ,那么a 的算术平方根是_________.10、观察下面一列数:根据规律写出横线上的数,-11;21;-31;___;-51;61;______;….,第2007个数是__________。
三、化简求值(本题10分)11、化简求值y x xy y x xy xy xy 2222332323+⎥⎦⎤⎢⎣⎡+⎪⎭⎫ ⎝⎛---其中31,3-==y x四、解答题(本小题满20分)12.为了防控甲型H1N1流感,某校积极进行校园环境消毒,购买了甲乙两种消毒液共100瓶,其中甲种消毒液6元/瓶,乙种消毒液9元/瓶。
一、选择题(每题4分,共20分)1. 下列数中,是质数的是()A. 16B. 15C. 13D. 142. 下列图形中,面积最大的是()A. 正方形B. 长方形C. 三角形D. 圆形3. 已知一个数的十分位是7,百分位是5,这个数写作()A. 0.75B. 0.57C. 0.757D. 0.5754. 下列算式中,结果是正数的是()A. (-3) × (-2) = 6B. (-3) × 2 = -6C. (-3) ÷ (-2) = -1.5D. (-3) ÷ 2 = -1.55. 下列代数式中,同类项是()A. 3x^2和5x^2B. 2x和5yC. 3xy和4xyD. 2x^2和5x二、填空题(每题5分,共25分)6. 0.25 + 0.3 = ______7. 2.5 - 1.2 = ______8. 3.14 × 5 = ______9. 12 ÷ 3 × 2 = ______10. 4^2 - 2^2 = ______三、解答题(每题10分,共30分)11. 解下列方程:(1)2x - 5 = 9(2)5 - 3y = 212. 已知长方形的长是8cm,宽是4cm,求长方形的面积。
13. 一辆汽车以每小时60公里的速度行驶,行驶了2小时后,离出发点的距离是多少?四、应用题(15分)14. 小明去书店买书,每本书的单价是15元,他带了100元,请问小明最多能买几本书?15. 小华家养了5只鸡和3只鸭,鸡的只数是鸭的2倍,请问小华家一共有多少只家禽?注意:请将答案填写在答题卡上,答案不完整或超出规定字数者不得分。
考试时间:60分钟。
一、选择题(每题3分,共30分)1. 下列各数中,有理数是()A. √2B. πC. -3/5D. √92. 已知a、b是实数,且a + b = 0,则下列结论错误的是()A. a和b互为相反数B. a和b互为倒数C. a和b相等D. a和b都为03. 下列图形中,面积最大的图形是()A. 正方形B. 长方形C. 平行四边形D. 三角形4. 若一个数的平方等于4,则这个数是()A. ±2B. ±4C. ±1D.±85. 已知a > b,则下列不等式成立的是()A. a - b > 0B. a + b > 0C. a - b < 0D. a + b < 06. 下列代数式中,含有未知数的是()A. 2x + 5B. 3y - 2C. 7 - 4zD. 57. 若x² - 5x + 6 = 0,则x的值为()A. 2B. 3C. 2或3D. 无法确定8. 已知a、b、c是等差数列,且a + b + c = 12,则a + c的值为()A. 6B. 8C. 10D. 129. 下列函数中,y是x的一次函数的是()A. y = 2x + 3B. y = 3x² + 2C. y = √xD. y = 1/x10. 若点P(x,y)在第二象限,则下列不等式成立的是()A. x > 0,y > 0B. x < 0,y < 0C. x > 0,y < 0D. x < 0,y > 0二、填空题(每题3分,共30分)11. 若|a| = 5,则a的值为__________。
12. 若√(a² + 9) = 3,则a的值为__________。
13. 若x - 3 = 0,则x的值为__________。
14. 若一个数的倒数是1/4,则这个数是__________。
15. 若x² - 2x + 1 = 0,则x的值为__________。
八年级上入学考试卷姓名--------考号-------分数---------一、填空题(每空2分,共30分)1.(4分) _________ •3xy 2=﹣18x 3y 6;1﹣20= _________ .2.(2分)已知a m=3,a n=9,则a 3m ﹣2n= _________ .3.(6分)用加减法解方程组,把两个方程的两边 _________ ,直接消去未知数 _________ ,得到的一元一次方程是 _________ . 4.(2分)△ABC 中,AB=10,BC=2,周长是偶数,则AC= _________ .5.(4分)若x 2+mx ﹣15=(x+3)(x+n ),则m= _________ ,n= _________ . 6.(2分)如果△ABC 中,∠A+∠B=∠C ﹣10°,则△ABC 是 _________ 三角形. 7.(4分)如图所示,若△ABC ≌△EFC ,且CF=3厘米,∠EFC=64°,则BC= _________ 厘米,∠B= _________ °.(9)8.(2分)(2012•黄石)若关于x 的不等式组有实数解,则a 的取值范围是 _________ .9.(2分)如图,若∠BAD=∠CAD ,添加条件 _________ ,可使得△ABD ≌△ACD . 10.(2分)如图所示,BE ⊥AC 于点D ,且AB=CB ,BD=ED ,若∠ABC=54°,则∠E= _________ .(14)二、选择题(每题2分,共16分) 2. B . C . D . 14.(2分)如图,AC=AB ,AD 平分∠CAB ,E 在AD 上,则图中能全等的三角形有( )对. 15.(2分)某人将甲、乙两种股票卖出,其甲种股票卖价1200元,盈利20%,其乙16.(2分)下列△ABC 中,正确画出AC 边上的高的是( )..C. D.17.(2分)如图,∠BAC=90°,AD ⊥BC ,则图中互余的角有( )A . 2对B . 3对C . 4对D . 5对 18.(2分)如图,给出下面的推理: ①因为∠B=∠BEF ,所以AB ∥EF ;②因为∠B=∠CDE ,所以AB ∥CD ; ③因为∠DCE+∠AEF=180°,所以AB ∥EF ;④因为∠A+∠AEF=180°,所以AB ∥EF . 其中正确的推理是( ) 三、解答题 19.(12分)计算: (1)(﹣)﹣2+()0+(﹣5)3÷(﹣5)2(2)(4m ﹣3)2+(4m+3)(4m ﹣3)(3)﹣10×9(4)已知x 2+4x ﹣1=0,求2x 4+8x 3﹣4x 2﹣8x+1的值.20.(6分)因式分解(1)2x 2﹣8xy+8y2(2)x 2(x ﹣y )+(y ﹣x )21.(8分)解方程与不等式 (1)(2),并求出它的整数解的和.22.(6分)如图,已知AB∥CD,∠1=∠3,试说明AC∥BD.23.(10分)某学生骑自行车从学校去县城,先以每小时12千米的速度下山,而后以每小时9千米的速度通过平路到达县城,共用去55分钟;返回时,他以每小时8千米的速度通过平路,再以每小时4千米的速度上山回到学校,又用去1小时30分.(1)若设山路长为x千米,平路长为y千米,如何列方程组呢?(2)若设下山需x小时,上山需y小时,方程组又是怎样的呢?(3)若设去时走平路需x小时,返回时走平路需y小时,又怎样列方程组呢?24.(12分)(2010•攀枝花)我市某西瓜产地组织40辆汽车装运完A,B,C三种西瓜共200吨到外地销售.按计划,40辆汽车都要装运,每辆汽车只能装运同一种西x辆,装运B种西瓜的车辆数为y辆,求y与x 的函数关系式;(2)如果装运每种西瓜的车辆数都不少于10辆,那么车辆的安排方案有几种?并写出每种安排方案;(3)若要是此次销售获利达到预期利润25万元,应采取怎样的车辆安排方案?参考答案与试题解析一、填空题(每空2分,共30分) 1.(4分) ﹣6x 2y 4•3xy 2=﹣18x 3y 6;1﹣20= 1 .2.(2分)已知a m=3,a n=9,则a 3m ﹣2n=.3.(6分)用加减法解方程组,把两个方程的两边 相加 ,直接消去未知数 y ,得到的一元一次方程是 2x+5x=5+2 .4.(2分)△ABC 中,AB=10,BC=2,周长是偶数,则AC= 10 . 5.(4分)若x 2+mx ﹣15=(x+3)(x+n ),则m= ﹣2 ,n= ﹣5 . 是 钝角 三角形. 7.(4分)如图所示,若△ABC ≌△EFC ,且CF=3厘米,∠EFC=64°,则BC= 3 厘米,∠B= 64 °.8.(2分)(2012•黄石)若关于x 的不等式组有实数解,则a 的取值范围是 a <4 .9.(2分)如图,若∠BAD=∠CAD ,添加条件 AB=AC ,可使得△ABD ≌△ACD .10.(2分)如图所示,BE ⊥AC 于点D ,且AB=CB ,BD=ED ,若∠ABC=54°,则∠E= 27° .二、选择题(每题2分,共16分).B .C .D . 14.(2分)如图,AC=AB ,AD 平分∠CAB ,E 在AD 上,则图中能全等的三角形有( )对.. B . C . D .17.(2分)如图,∠BAC=90°,AD ⊥BC ,则图中互余的角有( )A . 2对B . 3对C . 4对D . 5对18.(2分)如图,给出下面的推理: ①因为∠B=∠BEF ,所以AB ∥EF ; ②因为∠B=∠CDE ,所以AB ∥CD ; ③因为∠DCE+∠AEF=180°,所以AB ∥EF ; ④因为∠A+∠AEF=180°,所以AB ∥EF . 其中正确的推理是( )A .①②③ B .①②④ C . ①③④ D .②③④三、解答题 19.(12分)计算:(1)(﹣)﹣2+()0+(﹣5)3÷(﹣5)2(2)(4m ﹣3)2+(4m+3)(4m ﹣3) (3)﹣10×9(4)已知x 2+4x ﹣1=0,求2x 4+8x 3﹣4x 2﹣8x+1的值.答: 解:(1)原式=9+1+(﹣5)=5;(2)原式=(4m ﹣3)(4m ﹣3+4m+3) =8m (4m ﹣3)=32m 2﹣24m ;(3)原式=﹣(10+)(10﹣) =﹣(100﹣)=﹣99;(4)∵x 2+4x ﹣1=0, ∴2x 4+8x 3﹣4x 2﹣8x+1=2x 2(x 2+4x ﹣1)﹣2(x 2+4x ﹣1)﹣1 =﹣1.20.(6分)因式分解(1)2x 2﹣8xy+8y 2(2)x 2(x ﹣y )+(y ﹣x ) 21.(8分)解方程与不等式 (1)(2),并求出它的整数解的和.(2)∵解不等式2x+3>3x 得:x <3, 解不等式﹣≥得:x ≥﹣4,∴不等式组的解集为﹣4≤x <3, ∴不等式组的整数解是﹣4,﹣3,﹣2,﹣1,1,2, ∴不等式组的整数解的和为﹣4﹣3﹣2﹣1+1+2=﹣7. 22.(6分)如图,已知AB ∥CD ,∠1=∠3,试说明AC ∥BD .23.(10分)某学生骑自行车从学校去县城,先以每小时12千米的速度下山,而后以每小时9千米的速度通过平路到达县城,共用去55分钟;返回时,他以每小时8千米的速度通过平路,再以每小时4千米的速度上山回到学校,又用去1小时30分. (1)若设山路长为x 千米,平路长为y 千米,如何列方程组呢? (2)若设下山需x 小时,上山需y 小时,方程组又是怎样的呢?(3)若设去时走平路需x 小时,返回时走平路需y 小时,又怎样列方程组呢?解:(1);(2);(3)24.(12分)(2010•攀枝花)我市某西瓜产地组织40辆汽车装运完A ,B ,C 三种西瓜共200吨到外地销售.按计划,40辆汽车都要装运,每辆汽车只能装运同一种西x 辆,装运B 种西瓜的车辆数为y 辆,求y 与x 的函数关系式;(2)如果装运每种西瓜的车辆数都不少于10辆,那么车辆的安排方案有几种?并写出每种安排方案;解答: 解:(1)根据题意得4x+5y+6(40﹣x ﹣y )=200,整理得y=﹣2x+40,则y 与x 的函数关系式为y=﹣2x+40;(2)设装运A 种西瓜的车辆数为x 辆,装运B 种西瓜的车辆数为y 辆,装运C 种西瓜的车辆数为z 辆,则x+y+z=40,∵,∴z=x , ∵x ≥10,y ≥10,z ≥10, ∴有以下6种方案: ①x=z=10,y=20;装运A 种西瓜的车辆数为10辆,装运B 种西瓜的车辆数20辆,装运C 种西瓜的车辆数为10辆; ②x=z=11,y=18;装运A 种西瓜的车辆数为11辆,装运B 种西瓜的车辆数为18辆,装运C 种西瓜的车辆数为11辆; ③x=z=12,y=16;装运A 种西瓜的车辆数为12辆,装运B 种西瓜的车辆数为16辆,装运C 种西瓜的车辆数为12辆; ④x=z=13,y=14;装运A 种西瓜的车辆数为13辆,装运B 种西瓜的车辆数为14辆,装运C 种西瓜的车辆数为13辆; ⑤x=z=14,y=12;装运A 种西瓜的车辆数为14辆,装运B 种西瓜的车辆数为12辆,装运C 种西瓜的车辆数为14辆; ⑥x=z=15,y=10;装运A 种西瓜的车辆数为15辆,装运B 种西瓜的车辆数为10辆,装运C 种西瓜的车辆数为15辆;(3)由题意得:1600×4x+1000×5y+1200×6z ≥250000,将y=﹣2x+40,z=x ,代入得3600x+200000≥250000,解得x ≥13, 经计算当x=z=14,y=12;获利=250400元; 当x=z=15,y=10;获利=254000元;故装运A 种西瓜的车辆数为14辆,装运B 种西瓜的车辆数为12辆,装运C 种西瓜的车辆数为14辆;。
一、选择题(每题2分,共20分)1. 下列各数中,最小的正整数是()A. -3B. 0C. 1D. 22. 下列各数中,是偶数的是()A. 3.14B. 2.5C. 4D. 0.753. 下列各数中,是质数的是()A. 9B. 11C. 15D. 164. 下列各数中,是同类二次根式的是()A. √2 和√3B. √18 和√32C. √8 和√24D. √12 和√275. 下列各式中,正确的是()A. 2a + 3b = 5a + 2bB. 3x - 2y = 2x + 5yC. 4m - 5n = 5m - 4nD. 6p + 7q = 7p + 6q6. 下列各式中,能化简为最简二次根式的是()A. √18B. √50C. √72D. √987. 下列各函数中,是正比例函数的是()A. y = 2x + 3B. y = 3x - 2C. y = 4xD. y = 5x - 18. 下列各图中,表示y = 2x + 1的函数图象是()(此处应插入图形)A.B.C.D.9. 下列各式子中,正确的是()A. (a + b)^2 = a^2 + b^2B. (a - b)^2 = a^2 - b^2C. (a + b)^2 = a^2 + 2ab + b^2D. (a - b)^2 = a^2 - 2ab + b^210. 下列各方程中,是一元一次方程的是()A. 2x + 3y = 5B. 3x^2 - 2x + 1 = 0C. 4x - 5 = 2x + 3D. 5x + 6y - 7 = 0二、填空题(每题2分,共20分)11. 3的平方根是______,-5的立方根是______。
12. 如果一个数的平方是4,那么这个数是______。
13. 下列各数中,质数有______个。
14. 下列各数中,偶数有______个。
15. 下列各数中,负数有______个。
16. 下列各数中,正数有______个。
一、选择题(每题2分,共20分)1. 下列各数中,绝对值最小的是()A. -3B. 2C. -2D. 32. 下列各式中,正确的是()A. (-2)² = -4B. (-3)³ = -27C. (-4)⁴ = 16D. (-5)⁵ = -1253. 下列各数中,属于有理数的是()A. √2B. √3C. √4D. √54. 如果一个数的平方是25,那么这个数是()A. 5B. -5C. 5或-5D. ±55. 下列各式中,符合一元一次方程的是()A. 2x + 3 = 7B. 3x - 5 = 2x + 4C. 4x² + 5 = 0D. 2x + 3y = 56. 下列各式中,表示比例关系的是()A. a : b = c : dB. a + b = c + dC. ab = cdD. a² = b²7. 下列各数中,能被3整除的是()A. 12B. 15C. 18D. 218. 下列各数中,能被4整除的是()A. 8B. 10C. 12D. 149. 下列各数中,能被5整除的是()A. 20B. 25C. 30D. 3510. 下列各数中,能被6整除的是()A. 12B. 15C. 18D. 21二、填空题(每题2分,共20分)11. 计算:-2 + 3 - 4 + 5 - 6 + 7 - 8 + 9 - 10 = _______12. 计算:(-3)×(-2)×(-1) = _______13. 计算:2² × 3³ = _______14. 计算:-2 × 2 × 2 × 2 = _______15. 计算:(-3)⁴ = _______16. 计算:(-5)⁵ = _______17. 计算:3 + 4 × 5 = _______18. 计算:2 × (3 + 4) = _______19. 计算:6 ÷ (2 + 3) = _______20. 计算:5 × 2 - 3 × 2 = _______三、解答题(每题10分,共30分)21. 简化下列各数:(1)-2 + 3 - 4 + 5 - 6 + 7 - 8 + 9 - 10(2)2² × 3³(3)(-3)⁴22. 解下列方程:(1)2x + 3 = 7(2)3x - 5 = 2x + 423. 判断下列各数是否为有理数:(1)√2(2)√3(3)√4(4)√5答案:一、选择题:1. A2. B3. C4. C5. A6. C7. A8. C9. A 10. A二、填空题:11. -15 12. -6 13. 108 14. -16 15. 81 16. -3125 17. 23 18. 14 19.1 20. 4三、解答题:21. (1)-15 (2)108 (3)8122. (1)x = 2 (2)x = 923. (1)不是(2)不是(3)是(4)不是。
初二入学考试题及答案一、选择题(每题2分,共20分)1. 下列哪项不是地球的自然特征?A. 地球的自转B. 地球的公转C. 地球的大气层D. 地球的地壳答案:D2. 以下哪个选项是光合作用的产物?A. 水B. 氧气C. 二氧化碳D. 氮气答案:B3. 以下哪个国家不是联合国安全理事会的常任理事国?A. 中国B. 俄罗斯C. 法国D. 德国答案:D4. 以下哪个选项是细胞的基本结构?A. 细胞壁B. 细胞膜C. 细胞核D. 所有选项答案:D5. 以下哪个选项是化学变化的特征?A. 有新物质生成B. 有能量释放C. 有颜色变化D. 有气味变化答案:A6. 以下哪个选项是二次函数的一般形式?A. y = ax^2 + bx + cB. y = ax^2 + bxC. y = ax + cD. y = ax^2答案:A7. 以下哪个选项是生态系统中的分解者?A. 植物B. 动物C. 细菌D. 真菌答案:D8. 以下哪个选项是人体最大的淋巴器官?A. 扁桃体B. 脾脏C. 胸腺D. 淋巴结答案:B9. 以下哪个选项是牛顿第一定律的内容?A. 物体不受力时,总保持静止或匀速直线运动B. 物体受力时,总保持静止或匀速直线运动C. 物体不受力时,总保持静止或匀速曲线运动D. 物体受力时,总保持静止或变速直线运动答案:A10. 以下哪个选项是中国古代四大发明之一?A. 造纸术B. 印刷术C. 指南针D. 火药答案:A二、填空题(每题2分,共20分)1. 地球的赤道周长约为________公里。
答案:400752. 光年是天文学中用来表示________的单位。
答案:距离3. 人体中最大的细胞是________。
答案:卵细胞4. 地球的大气层由外到内依次是________、平流层、对流层。
答案:外层空间5. 化学变化和物理变化的根本区别在于是否有________生成。
答案:新物质6. 一个二次函数的顶点坐标可以通过公式________求得。
初二入学考试试卷一、单项填空(共20分,每题1分)1.一Is this David’s bag?—Sorry,this is my bag.__________ is over there. A.Mine B.Hers C.He D.His 2.Look! The children _________ kites.A.fly B.are flying C.flew D.will fly 3.We have a big library __________ a lot of books in our school.A.for B.about C.with D.of 4.I am really looking forward to __________ on a trip to Hong Kong.A.going B.go C.goes D.went 5.—How is the weather in Beijing?—Oh,it’s _________than that in your hometown.A.hot B.hotter C.hottest D.the hottest 6.—How was the party last night?—Great! Everyone sang and danced ________.A.loudly B.exciting C.happily D.relaxed 7.Could you help me _________ all these pieces of paper? My hands are too dirty.A.put on B.pick up C.look around D.go back 8.My grandpa is from the northeast of China,so he likes living in a cooler _________.A.climate B.future C.coast D.pond 9.She looks much _________ without her glasses!A.well B.good C.best D.better 10.Who _________ more housework in your home yesterday,you or your parents?A.does B.do C.did D.will do 11.—_________ is Beijing?一It has a history of more than 3000 years. A.How long B.How far C.How old D.How soon 12.一Do you like Shakespeare?一Yes.He is one of __________ in the world. A.famous writer B.the most famous writers C.more famous writers D.the most famous writer 13.—Have you got any plans for the dinner party?—Yeah.You know,I am interested in ________, So I___________ by myself.A.cook;am going to cook B.cooker;cook C.cooking;am going to cook D.cooking;cooked 14.—Dad,did you ride a bike to school when you _________ a boy?—No,my family was poor,so I usually _________ to school on foot.A.are,go B.were,go C.was,went D.were,went 15.— Why not have a picnic at the weekend?—________________.A.Best wishes to you B.It doesn’t matter C.That’s a good idea D.Thanks for your help16. the weather like in Hangzhou? It’s cloudy.A. How’sB. WhatC. HowD. What’s17. There some milk in the glass.A. isB. areC. hasD. have18. Bob comes from .He speaks .A. Japan , EnglishB. America , ChineseC. French , FranceD. Australia, English19. I want a new house a small garden.A. ofB. withC. haveD. in20. They at home last weekend.A. stayB. stayedC. was stayedD. stays二、完形填空(共10分,每题1分)It was Jemima’s FIRST day at school.When she arrived,Jemima noticed all the other children were __30__ from her. The teacher was very nice and answered all her questions.But her mum looked __31__.She went out to the playground with Jemima,kissed her and then left.When Jemima came back to the classroom.her __32__ stopped what they were doing and looked at her.“Why are you on wheels(轮子)?”a boy asked.That noon,Jemima ate her lunch by herself in the toilet.Everybody thought she was strange.After she got home,she told her mum she didn’t want to go to school any more.But there was __33__ she could do.Jemima fell asleep with tears.The next morning Jemima arrived at the school early.She waited in the toilet again until class started because she didn’t want to see anyone.__34__ her way to class,there was no one about.__35__ up ahead she could see someone lying on the ground.When she got closer,she found the boy was in pain(疼痛)and twisted(扭曲)his ankle.“Go away!”shouted the boy.“You can’t help me.You can’t even walk!”Jemima wanted to __36__ the boy,but she knew she had to help.She moved closer.“Here,get in,”she said.The boy stopped for a short time,and then did it“Why did you help me?”the boy asked.“I was rude(粗鲁的)to you.”“I know how __37__ feels,”said Jemima.“Not being able to(can not)walk.”30.A.clear B.special C.like D.different 31.A.friendly B.worried C.strict D.comfortable 32.A.roommates B.teachers C.classmates D.friends 33.A.everything B.something C.anything D.nothing 34.A.On B.In C.At D.By35.A.But B.And C.Or D.So36.A.push B.answer C.leave D.destroy 37.A.you B.we C.it D.he三、阅读理解(共20分,每题2分)AWe have two weeks’holiday from about December 20th to January 5th.We have two more weeks at the beginning of April.Our longest holidays(6 weeks)are from the end of July to the beginning of September.We play basketball and other sports every month of the year.You can do winter sports from late December to the middle of March.You must go to Scotland for winter sports.We go swimming in the river only in July and August.The fiver water is very cold.We have fruit all the year round in Britain.The best months for apples are September,October,November and December.The best months for pears are October and November.The best months for oranges are December,January and February. The coldest months of the year are December,January and February.My favorite months are July and August.38.In Britain.people have __________ weeks for holiday in a year.A.2 B.4 C.6 D.10 39.Which of following months is the writer's favorite?A.February B.November C.September D.July BMrs.Weeks was reading a newspaper story to her class.The story said:Were you ever in a hospital when you were small? How did you feel? The doctors in Children’s Hospital are asking for money for children’s toys.Some children in the hospital must stay in bed for many weeks.Toys can help the children there keep happy and quiet.After Mrs.Weeks read the story,she said,“This story gave me an idea.”“You want us to bring some money for the toys.”“We could bring some of our own toys for the children in the hospital,”said the boys and the girls.“Well,your ideas would be nice,”Mrs.Weeks said,“but mine is different.”“We could make some toys,”said one of them.Mrs.Weeks smiled.“Do you think you could make toys?”she asked.“Yes,yes,”the whole class answered.“Great! Let’s begin to make toys tomorrow,”said Mrs.Weeks.On Saturday afternoon,Mrs.Weeks took the children to the hospital with the toys made by her students.The children in the hospital felt very happy to see the toys.So did the students in the class.A few days later,Mrs.Weeks read another newspaper story to the class:Some primary school students brought toys to Children’s Hospital last week.The toys were made by the students of Grade Three in Park Street School.The doctors said.“We have never had so many wonderful toys.Our children are very happy with them.They say,‘THANK YOU,GRADE THREE.’”41.In the newspaper.we know that the doctors in Children’s Hospital wanted _______ for the children in the hospital.A.money B.newspapers C.beds D.ideas 42.Who needed help in the story?A.Mrs.Weeks of Park Street School.B.The students of Grade ThreeC.Sick children in Children’s Hospital.D.Parents in Children’s Hospital43.Mrs.Weeks’idea is to _________.A.give money to the hospital to help the childrenB.make toys for the children in the hospitalC.talk with the doctors in Children’s HospitalD.buy some toys for the children in the hospital44.From the passage we can learn that Mrs.Weeks wanted to teach her students how to _______.A.read the newspaper B.make toys with paper C.save money for toys D.be helpful to others CBuckingham Palace is in London,England.Buckingham Palacewas built around 1705.It isfamous because Queen Elizabeth of England lives there.She became queen in 1952Buckingham Palace is a big and beautiful building.A flag flies on the top of the palace when the queen is there.Queen Elizabeth and her family live on the second floor of the palace.The queen also has her office at the palace.Queen Elizabeth often asks important people to eat dinner at the palace.She also has three garden parties in the summer.She invites 9,000 people to each party! A lot of people meet the queen.Buckingham Palace is like a small town.It has a police station,a hospital,two post offices,a movie theater,a swimming pool,two sports clubs,a garden and a lake.The palace has about 600 rooms.About 400 people work there.Two people have very unusual jobs.They take care of the clocks.There are 300 clocks in Buckingham Palace!Queen Elizabeth’s day starts at 7:00 in the morning.Seven people take care of her.One person prepares(准备)her bath,and another person prepares her clothes.Another person takes care of her dogs.The queen loves dogs.Right now,she has eight dogs.Every day,a man brings food for the dogs to Queen Elizabeth’s room.The queen puts the food in the bowls. At 8:30 every morning,the queen has breakfast withher husband,Prince Philip.They drink a special coffee with hot milk.During breakfast,a musician plays Scottish music outside.Then Queen Elizabeth works in her office the rest of the morning.After lunch,she visits hospitals,schools,or new buildings.It is very interesting to eat dinner at Buckingham Palace.You have to follow rules.Queen Elizabeth starts to eat first,and then everybody eats.When the queen finishes eating,everybody finishes eating.You can’t leave the table during dinner.The queen never answers a telephone call during dinner. People visit the rooms in Buckingham Palace in August and September.There are wonderful things to see.Don’t forget that Queen Elizabeth is one of the richest people in the world.45.How many rooms does Buckingham Palace have?A.900. B.600. C.400. D.300.46.What does the queen do after lunch?A.She invites people to her garden for party.B.She asks important people to work at the palace. C.She drinks a special coffee with hot milk.D.She visits hospitals,schools or new buildings.47.According to the text,everyone has to _________ during dinner at Buckingham Palace?A.stay at the tableB.1isten to Scottish musicC.finish eating later than the queenD.start eating earlier than the queen48.Which sentence is NOT true?A.We can guess the clocks in Buckingham Palace are very importantB.Buckingham Palace is not only an office,but also a home.C.People can visit Buckingham Palace all the year round.D.Queen Elizabeth can swim or do some other sports.四、请根据所给中英文提示,完成下列各句。