[首发]江苏省兴化市顾庄学区三校2017-2016学年七年级下学期期末考试英语试题
江苏省兴化市顾庄学区三校2015-2016学年七年级英语下学期期中试题(含听力)-牛津译林版
江苏省兴化市顾庄学区三校2015-2016学年七年级英语下学期期中试题(考试用时:120分钟满分:150分)第一部分选择题(共85分)一、听力(共20小题,每小题1分,计20分.)第一部分听对话回答问题本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍。
(10分)( ) 1. How can the man get to Sunshine Restaurant after crossing the bridge?A. B. C.( ) 2. What does Millie’s uncle do?A. B. C.( ) 3. What’s Lily’s favourite room in her house?A. B. C.( )4. Where would Sam like to go?A B C( )5.Where are they talking?A. In a schoolB. In a hospitalC. In a shopping mall.( )6.What colour is Jim’s box?A. RedB. BrownC. Black( )7.Where does the man find the wallet?A. On the grassB. In the libraryC.on the playground( ) 8.How will the man get to Apple Theatre?A. By taxiB. On footC. By bike( )9.Whose birthday is it tomorrow?A. Millie’sB. Simon’sC. Sandy’s( )10. What’s in the woman’s bag?A. Some photos.B. Some money.C. Some cards第二部分听对话和独白回答问题(计10分,每小题1分)你将听到一段对话和两段独白,听两遍。
江苏省兴化顾庄等三校七年级英语下学期第一次联考试题
江苏省兴化顾庄等三校2014-2015学年七年级英语下学期第一次联考试题(考试时间:120分钟,满分:150分)成绩第一部分选择题(共80分)一、听力(20分)Ⅰ.听对话回答问题,录音读两遍。
(10分)( ) 1. What’s in the photo?A. B. C.( ) 2. What is in the girl’s bedroom?A. B. C.( ) 3. What’s next to the boy’s building?A. B. C.( ) 4. When would the girl like to have a day out?A. B. C.( ) 5. What is the boy going to be?A. A teacher.B. A policeman.C. A postman.( ) 6. How long does it take the girl to the train station by bus?A. 50 minutes.B. 15 minutes.C. 10 minutes.( ) 7.Who can get the knife?A. The girl’s brother.B. The girl’s mum.C. The girl.( ) 8. Why will the girl go to the “helping hands” meeting?A. Because she doesn’t feel well.B. Because her computer is broken.C. Because she has some problems with her Maths.( ) 9. What is the man going to do this evening?A. To watch a film.B. To have a meeting.C. To look for some information.( ) 10. Which gate is Betty at now?A. The north gate.B. The east gate.C. The south gate.Ⅱ.听对话和短文回答问题。
兴化市七年级英语期末模拟试卷含答案
兴化市七年级英语期末模拟试卷含答案对于七年级的学生来说,英语是比较难的一门科目,所以学生在期末考试前,可以有选择性地去做一些试卷,这样可以提高自己的成绩。
小编为大家推荐了相关试卷,希望可以帮助到大家!七年级英语期末模拟试卷一、听力(共20小题,每小题1分,满分20分)A) 根据听到的内容, 选择正确的图片或正确的答案,听两遍。
1. Which festival are they talking about?A. B. C.2. What does Daniel like?A. B. C.3. What does Millie like to do after class?A. B. C.4. What is Miss Wang?A. B. C.5.What is the time now?A. 6:00B. 6:15C. 5:456. What is Jack doing?A. He’s doing homework.B. He’s watching matches.C. He’s doing housework.7. What would John like to do after school?A. To watch TV.B. To listen to music.C. To play music.8. How often does the girl go swimming?A. Every day.B. Every week.C. Twice a week.9. What day is it today?A. Tuesday.B. Wednesday.C. Thursday.10. What does Sally like doing?A. Drawing.B. Reading.C. Singing.B. 听下面3段对话或短文。
每段对话或短文后各有几道小题,从题中所给的A、B、C三个选项中选出最佳选项。
2016-2017学年七年级下学期期末测试英语试卷答案
七年级英语下学期期末试题答题卡(2016~2017学年度第二学期)总成绩单D .听填信息(本题有5小题,每小题1分,共5分)21. Sunday 22. science museum 23. red 24. father 25. 7:00二、单项选择(本题共20小题,每小题1分,共20分) 1B三、完形填空(本题共10小题,每小题1分,共10分)四、阅读理解(本题共15小题,每小题2分,共30分)五、短文填空(本题有10小题,每小题1.5分,共15分) 请完整写出单词1. hard2. by3. was4. pools5. many6. So7. and8. get9. because 10. went六、A.信息归纳(共5分)1. Sunday2. Doing her homework.3. In his bank.4. Bill5. Four B 、书面表达(15分)Peter ’s SundayIt was Sunday yesterday. Peter was busy . He got up very early. After breakfast , he cleaned his room and then went to the library. In the afternoon, he visited his cousin Mike . Then he played soccer with his friends. In the evening , he did his homework. After that, he watched TV . At about ten o ’clock , he went to bed.(温馨提示,请检查班级,姓名,座号自己是否已填)班级_______________ 姓名___________________ 座号____________……………密………………封………………线………………内………………请………………勿……………答………………题……………。
江苏省兴化市顾庄学区三校2016-2017学年下学期初中七年级期末考试数学试卷
江苏省兴化市顾庄学区三校2016-2017学年下学期初中七年级期末考试数学试卷满分为150分,考试时间为120分钟.一、选择题(本大题共有6小题,每小题3分,共18分)1.化简﹣b•b 3•b 4的正确结果是( )A .﹣b 7B .b 7C .-b 8D .b 82.已知⎩⎨⎧==32y x 是关于x 、y 的方程4kx-3y=-1的一个解,则k 的值为( )A.1B.-1C.2D.-23.不等式2x+1≥5的解集在数轴上表示正确的是 ( )4.若多项式)3)(1(-+x x =b ax x ++2,则a ,b 的值分别是( )A .2=a ,3=bB .2-=a ,3-=bC .2-=a ,3=bD .2=a ,3-=b5.下列命题中,为真命题的是( )A .如果-2x >-2,那么x >1B .如果a 2=b 2,那么a 3=b 3C .面积相等的三角形全等D .如果a ∥b ,b ∥c ,那么a ∥c6.如图,在△ABC 中,P 、Q 分别是BC 、AC 上的点,作PR ⊥AB ,PS ⊥AC ,垂足分别为R 、S ,若AQ =PQ ,PR =PS ,则结论:①PA 平分∠RPS ;②AS =AR ;③QP ∥AR ;④△BRP ≌△CSP.其中正确的有( )A .4个B .3个C .2个D .1个二、填空题(本大题共有10小题,每小题3分,共30分)7.生物学家发现了一种病毒的长度约为0.00000432毫米,数据0.00000432用科学记数法表示为 .8.一个长方体的长、宽、高分别是3x-4,2x 和x,它的体积等于 .9.不等式组⎪⎩⎪⎨⎧<≥-3203x x ,的解集是 . 10.命题“如果a >b,那么ac >bc ” 的逆命题是_ 命题(填“真”或“假”).11.如图所示,AB=DB,∠ABD=∠CBE,请你添加一个适当的条件 ,使△ABC ≌△DBE(只需添加一个即可,不添加辅助线).C AB DE12.已知a +b=3,a b=2,则(a -b)2= .13.如图,已知∠1=∠2=90°,AD=AE ,那么图中有 对全等三角形.21OB C D E14. 某地准备对一段长120 m 的河道进行清淤疏通.若甲工程队先用 4天单独完成其中一部分河道的疏通任务,则余下的任务由乙工程队单独完成需要9天;若甲工程队先单独工 作8天,则余下的任务由乙工程队单独完成需要3天.设甲工程队平均每天疏通河道x m ,乙工程队平均每天疏通河道y m ,则)(y x +的值为 .15.已知关于x 的不等式组010x a x ->⎧⎨->⎩,的整数解共有3个,则a 的取值范围是 . 16.我国南宋数学家杨辉用三角形解释二项和的乘方规律,称之为“杨辉三角”,这个三角形给出了(a +b )n (n =1,2,3,4,……)的展开式的系数规律(按n 的次数由大到小的顺序):请依据上述规律,写出(x-2)2017展开式中含x 2016项的系数是 .三、解答题(本大题共有10小题,共102分.解答时应写出必要的步骤)17.(本题满分12分) 计算:(1);)()()(20172201-221--3.14--+-π (2)已知x 2+x ﹣5=0,求代数式(x ﹣1)2﹣x (x ﹣3)+(x+2)(x ﹣2)的值.18.(本题满分8分)因式分解:(1)2x 3y -8xy (2)222(4)16x x +-19.(本题满分8分)解不等式1215312≤+--x x ,把它的解集在数轴上表示出来,并求出这个不等式的负整数解.20.(本题满分8分)如图,点D 在AB 上,点E 在AC 上,BE 、CD 相交于点O.O A BD(1)若∠A=50°,∠BOD=70°,∠C=30°,求∠B 的度数;(2)试猜想∠BOC 与∠A+∠B+∠C 之间的关系,并证明你猜想的正确性.21.(本题满分10分)学校准备购进一批节能灯,已知1只A 型节能灯和3只B 型节能灯共需26元;3只A 型节能灯和2只B 型节能灯共需29元.(1)求一只A 型节能灯和一只B 型节能灯的售价各是多少元;(2)学校准备购进这两种型号的节能灯共50只,并且A 型节能灯的数量不多于B 型节能灯数量的3倍,问A 型节能灯最多可以买多少只?22.(本题满分10分)如图,△ABC 中,AB =AC ,AD ⊥BC ,CE ⊥AB ,AE =CE .求证:FED B C(1)△AEF ≌△CEB ;(2)AF =2CD .23. (本题满分10分)已知关于x 、y 的方程组⎩⎨⎧-=-+=+.172,652y x m y x (1)求方程组的解(用含m 的代数式表示);(2)若方程组的解满足条件x <0,且y <0,求m 的取值范围.24. (本题满分10分)如图,直线m 与直线n 互相垂直,垂足为O ,A 、B 两点同时从点O出发,点A 沿直线m 向左运动,点B 沿直线n 向上运动.PCQ O A Bnm(1)若∠BAO 和∠ABO 的平分线相交于点P ,在点A 、B 的运动过程中,∠APB 的大小是否会发生变化?若不发生变化,请求出其值;若发生变化,请说明理由;(2)若∠ABO 的两个外角的平分线AQ 、BQ 相交于点Q ,AP 的延长线交QB 的延长线于点C ,在点A 、B 的运动过程中,∠Q 和∠C 的大小是否会发生变化?若不发生变 化,请求出∠Q 和∠C 的度数;若发生变化,请说明理由.25. (本题满分12分)观察下列关于自然数的等式:根据上述规律解决下列问题:(1)写出第a 4个等式:___________;(2)写出你猜想的第a n个等式(用含n的式子表示),并验证其正确性;(3)对于正整数k,若a k,a k+1,a k+2为△ABC的三边,求k的取值范围.a .26.(本题满分14分)已知A=2 a -7,B=a2- 4a+3,C= a2 +6a-28,其中2(1)求证:B-A>0,并指出A与B的大小关系;(2)阅读对B因式分解的方法:解:B=a2- 4a+3=a2- 4a+4-1=(a-2)2-1=(a-2+1)(a-2-1)=(a-1)(a-3).请完成下面的两个问题:①仿照上述方法分解因式:x2- 4x-96;②指出A与C哪个大?并说明你的理由.江苏省兴化市顾庄学区三校2016-2017学年下学期初中七年级期末考试数学试卷参考答案一、选择题(本大题共有6小题,每小题3分,共18分)1.C ;2.A ;3.D ;4.B ;5.D ;6.B二、填空题(本大题共有10小题,每小题3分,共30分)7.4.32×10-6;8. 6x 3-8x 2;9. 3≤x <6;10.假;11. BE=BC 或∠BDE=∠BAC 或∠DEB=∠ACB ; 12.1;13.3;14.20;15. 32a -<-≤;16.- 4034三、解答题(共10题,102分.下列答案仅供参考........,有其它答案或解......法.,参照标准给分.......) 17. (本题满分12分)(1)原式=1-41+41+1(4分)=2(6分) (2)原式=x 2﹣2x+1﹣x 2+3x+x 2﹣4=x 2+x ﹣3(4分),因为x 2+x ﹣5=0,所以x 2+x=5,所以原式=5﹣3=2(6分)18.(本题满分8分)(1)原式= 2xy (x 2-4)(2分)=2xy (x+2)(x-2)(4分)(2)原式=(x 2-4x+4)(x 2+4x+4)(2分)=(x-2)2(x+ 2)2(4分)19.(本题满分8分)去分母得:2(2x ﹣1)-3(5x+1)≤6,去括号得:4x ﹣2﹣15x ﹣3≤6,移项得:4x ﹣15x≤6+2+3,合并同类项得:﹣11x≤11,把x 的系数化为1得:x≥﹣1(5分).这个不等式的解集可表示如图:(7分),其所有负整数解为-1(8分). 20.(本题满分8分)(1)∵∠A=500,∠C=300,∴∠BDO=80°(2分);∵∠BOD=700,∴∠B=30°(4分)(2)∠BOC=∠A+∠B+∠C (5分)理由:∵∠BOC=∠BEC +∠C ,∠BEC=∠A+∠B ,∴∠BOC=∠A+∠B+∠C (8分)21. (本题满分10分)(1)设一只A 型节能灯的售价是x 元,一只B 型节能灯的售价是y 元(1分)依题意得⎩⎨⎧=+=+2923263y x y x (3分),解得⎩⎨⎧==75y x (4分).答;一只A 型节能灯的售价是5元,一只B 型节能灯的售价是7元(5分)(2)设购进A 型节能灯m 只,则购进B 型节能灯(50-m )只(6分),依题意有)50(3m m -≤(8分),解得5.37≤m (9分)∵m 是正整数,∴m=37答:A 型节能灯最多购进37只(10分).22. (本题满分10分)(1)∵AD ⊥BC ,CE ⊥AB ,∴∠AEF =∠CEB =∠ADC =90°即∠AFE +∠EAF =∠CFD +∠ECB =90° 又∵∠AFE =∠CFD ,∴∠EAF =∠ECB (3分).在△AEF 和△CEB 中,∠AEF =∠CEB ,AE =CE ,∠EAF =∠ECB ,∴△AEF ≌△CEB (5分)(2)由△AEF ≌△CEB ,可得AF =BC (6分)又∵AD ⊥BC ,∴∠ADB =∠ADC =90°.在Rt △ABD和Rt △ACD 中,∵AB =AC ,AD=AD ,∴Rt △ABD ≌Rt △ACD (HL ),∴CD =BD ,∴BC =2CD ,∴AF =2CD (10分)(直接用“三线合一”扣3分).23. (本题满分10分)(1)⎩⎨⎧+=-=.8,12m y m x (5分,求出x 、y 各2分,方程组的解1分);(2)根据题意,得⎩⎨⎧<+<-0.80,12m m (7分),m <-8(10分). 24. (本题满分10分)(1)不变化(1分)理由:∵AP 和BP 分别是∠BAO 和∠ABO 的平分线,∠AOB=90°,∴∠APB=180°-21(∠OAB+ABO )=180°-21×90°=135°(5分) (2)都不变(6分)理由:∵AQ 和BQ 分别是∠BAO 的邻补角和∠ABO 的邻补角的平分线,AP 和BP 分别是∠BAO 和∠ABO 的平分线,∴∠CAQ=∠QBP=90°,又∠APB=135°,∴∠Q=45°,∴∠C=45°(10分)25. (本题满分12分)(1)a 4应为92—72=8×4(2分)(2)规律:(2n+1)2-(2n-1)2=8n (n 为正整数)(4分,不写“n 为正整数”不扣分). 验证:(2n+1)2-(2n-1)2=[(2n+1)+(2n-1)] [(2n+1)-(2n-1)] =4n×2=8n (6分)(3)由(2)可知,a k =8k ,a k+1=8(k+1),a k+2=8(k+2)(9分),易知8k<8(k+1)<8(k+2),要使它们能构成一个三角形,则必须有8k+8(k+1)>8(k+2)(11分),解得k>1.所以k 的取值范围是k>1且k 为正整数(12分).26. (本题满分14分)(1)B-A= a 2- 4a+3-2 a+7= a 2- 6a+10=(a-3)2+1>0,B >A (3分)(2)①x 2- 4x-96=x 2- 4x+4-100=(x-2)2-102=(x-2+10)(x-2-10)=(x+8)(x-12)(6分)②C-A=a2+6a-28-2a+7=a2+4a-21=(a+7)(a-3)(10分)(直接用十字相乘法扣3分).因为a>2,所以a+7>0(11分),从而当2<a<3时,A>C(12分);当a=3时,A=C(13分);当a>3时,A<C(14分)。
江苏省兴化市顾庄学区2017_2018学年七年级英语下学期第二次月考试题牛津译林版
江苏省兴化市顾庄学区2017-2018学年七年级英语下学期第二次月考试题(考试时间:120分钟,满分:150分)成绩第一部分选择题(共 85 分)一、听力(共20小题;每小题1分,满分20分)第一部分听对话,回答问题本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍。
在听每段对话前,你将有5秒钟的时间阅读题目;听完后,你还有5秒钟的时间选出你所认为最合适的备选答案。
1. How does David usually go to school?A B C2. Where did Mike’s father go last month?A B C3. Which is the correct sign?A B C4. What animal are they talking about?A B C5. When does Jacky run?A. In the morning.B. In the afternoon.C. In the evening.6. What did Tom help his parents to do last weekend?A. To clean the garden.B. To clean the car.C. To clean the house.7 .Where are they talking?A. In a restaurantB. In the libraryC. In a hospital8.What kind of book can the man borrow?A. A book on musicB. A book on artC. A book on travel.9. Which floor is the girl on now?A. The fourth floor.B. The third floor.C. The second floor.10.What does Lily have to do?A. She has to play gamesB. She has to come homeC. She has to fix her bike 第二部分听对话和短文,回答问题本部分你将听到一段对话和两篇短文,各听两遍。
江苏省兴化市三校2016-2017学年七年级下学期第一次月考英语试卷
2016~2017学年度第二学期第一次月度联考七年级英语试题(考试时间:120分钟,满分:150分)成绩第一部分选择题(共80分)一、听力(20分)Ⅰ.听对话回答问题,录音读两遍。
(10分)( ) 1. Which building is in Bob’s country?A. B. C.( ) 2. What sport does the girl like?A. B. C.( ) 3. Where is Sam’s computer?A. B. C.( ) 4. Which floor does Jane live on?A.( ) 5. How far is Lucy’s house from the city centre?A. 9 miles.B. 19 miles.C. 90 miles. ( ) 6. Which country is the photo from?A. Russia.B. The UK.C. The USA. ( ) 7. What time is it now?A. 4:26.B. 6:27.C. 7:26.( ) 8. Why does the girl go to school by bus?A. Because she doesn’t have a bike.B. Because she doesn’t want to walk.C. Because her home is far away from the school.( ) 9. Who does the boy share a bedroom with?A. His brother.B. His sister.C. His parents.( ) 10. What doesn’t Peter like to do at home?A. To listen to music.B. To stay in bed.C. To read books.第二部分听对话和短文回答问题。
江苏省泰州市兴化市顾庄学区三校七年级数学下学期期末试卷(含解析) 苏科版-苏科版初中七年级全册数学试
2015-2016学年某某省某某市兴化市顾庄学区三校七年级(下)期末数学试卷一、选择题:本大题共6小题,每小题3分,共18分.1.下列运算结果是x6的是()A.x2+x3 B.x2•x3 C.(﹣x2)3D.x7÷x2.如图,数轴上所表示关于x的不等式组的解集是()A.x≥2 B.x>2 C.x>﹣1 D.﹣1<x≤23.若(x+2)(x﹣1)=x2+mx+n,则m+n=()A.1 B.﹣2 C.﹣1 D.24.利用加减消元法解方程组,下列做法正确的是()A.要消去y,可以将①×5+②×2 B.要消去x,可以将①×3+②×(﹣5)C.要消去y,可以将①×5+②×3 D.要消去x,可以将①×(﹣5)+②×25.下列命题中,为真命题的是()A.六边形的内角和为360度B.多边形的外角和与边数有关C.面积相等的三角形全等 D.三角形两边的和大于第三边6.如图,△ABC中,AB=AC,D是BC的中点,AC的垂直平分线分别交AC、AD、AB于点E、O、F,则图中全等三角形的对数是()A.1对B.2对C.3对D.4对二、填空题:本大题共10小题,每小题3分,共30分.3,则用科学记数法表示为克/厘米3(保留三个有效数字).8.已知m+n=3,m﹣n=2,则m2﹣n2=.9.不等式组的解集是.10.命题“对顶角相等”的逆命题是.11.如图,已知AB=BC,要使△ABD≌△CBD,还需添加一个条件,你添加的条件是.(只需写一个,不添加辅助线)12.若a+b=8,ab=10,则a2b+ab2=.13.已知△ABC的三个内角分别是∠A、∠B、∠C,若∠A=30°,∠C=2∠B,则这个三角形是三角形.(按角分类)14.已知关于x,y的二元一次方程组的解互为相反数,则k的值是.15.请看杨辉三角(1),并观察下列等式(2):根据前面各式的规律,则(a+b)6的第三项的系数为.16.如图,∠C=∠CAM=90°,AC=8,BC=4,P、Q两点分别在线段AC和射线AM上运动,且PQ=AB.若△ABC与△PQA全等,则AP的长度为.三、解答题:本大题共10小题,共102分,解答时应写出必要的步骤.17.计算:(1)(﹣2)2+20160﹣(﹣)﹣2+7×7﹣1;(2)(2a+b)2﹣4(a+b)(a﹣b)﹣b(3a+5b).18.因式分解:(1)4x2y2+8xy+4;(2)a2(x﹣y)+9b2(y﹣x).19.解不等式,把它的解集在数轴上表示出来,并求出这个不等式的负整数解.20.如图,已知AD是△ABC的高,点E、G分别在AB、AC上,EF⊥BC,垂足为F,∠CGD=∠BAC,若∠1=50°,求∠2和∠B的度数.21.观察下列关于自然数的等式:32﹣4×12=5 ①52﹣4×22=9 ②72﹣4×32=13 ③…根据上述规律解决下列问题:(1)完成第四个等式:92﹣4×2=;(2)写出你猜想的第n个等式(用含n的式子表示),并验证其正确性.22.欢欢与乐乐两人共同计算(2x+a)(3x+b),欢欢抄错为(2x﹣a)(3x+b),得到的结果为6x2﹣13x+6;乐乐抄错为(2x+a)(x+b),得到的结果为2x2﹣x﹣6.(1)式子中的a、b的值各是多少?(2)请计算出原题的正确答案.23.已知和,都是方程y=kx+b的解.(1)求k、b的值;(2)若﹣1≤x<2,求y的取值X围.24.某电器商场销售A、B两种型号计算器,两种计算器的进货价格分别为每台30元,40元,商场销售5台A型号和1台B型号计算器,可获利润76元;销售6台A型号和3台B 型号计算器,可获利润120元.(1)求商场销售A、B两种型号计算器的销售价格分别是多少元?(利润=销售价格﹣进货价格)(2)商场准备用不多于2500元的资金购进A、B两种型号计算器共70台,问最少需要购进A型号的计算器多少台?25.(1)如图(1),已知:在△ABC中,∠BAC=90°,AB=AC,直线m经过点A,BD⊥直线m,CE⊥直线m,垂足分别为点D、E,证明:DE=BD+CE.(2)如图(2),将(1)中的条件改为:在△ABC中,AB=AC,D、A、E三点都在直线m上,并且有∠BDA=∠AEC=∠BAC=α,其中α为任意锐角或钝角.请直接写出线段DE、BD、CE之间的数量关系(不要求说明理由);(3)将(1)中的直线m绕点A旋转,使其与BC边相交,则结论DE=BD+CE是否还成立?如成立,请你给出证明;若不成立,请写出所有可能的结论,并在图3中画出相应的图形.26.如图,已知△ABC中,AB=AC=10cm,BC=8cm,D为AB的中点,点P在线段BC上由B点出发向C点运动,同时点Q在线段CA上由C点出发向A点运动.设运动时间为ts.(1)证明:∠B=∠C;(2)若点P的速度是3cm/s,点Q的运动速度与点P的运动速度相等,则t为何值时△BPD 与△CQP全等?请说明理由;(3)若点P的速度比点Q的速度慢1cm/s,则点Q的运动速度为多少时,能使△BPD与△CQP 全等?请说明理由.2015-2016学年某某省某某市兴化市顾庄学区三校七年级(下)期末数学试卷参考答案与试题解析一、选择题:本大题共6小题,每小题3分,共18分.1.下列运算结果是x6的是()A.x2+x3 B.x2•x3 C.(﹣x2)3D.x7÷x【考点】同底数幂的除法;合并同类项;同底数幂的乘法;幂的乘方与积的乘方.【分析】利用同底数幂的乘法、除法以及积的乘方公式即可求解、进行判断.【解答】解:A、x2和x3不是同类项,不能合并,选项错误;B、x2•x3=x5,选项错误;C、(﹣x2)3=﹣x6,选项错误;D、x7÷x=x 7﹣1=x6,选项正确.故选D.2.如图,数轴上所表示关于x的不等式组的解集是()A.x≥2 B.x>2 C.x>﹣1 D.﹣1<x≤2【考点】在数轴上表示不等式的解集.【分析】根据在数轴上表示不等式组解集的方法进行解答即可.【解答】解:由数轴可得:关于x的不等式组的解集是:x≥2.故选:A.3.若(x+2)(x﹣1)=x2+mx+n,则m+n=()A.1 B.﹣2 C.﹣1 D.2【考点】多项式乘多项式.【分析】依据多项式乘以多项式的法则,进行计算,然后对照各项的系数即可求出m,n的值.【解答】解:∵原式=x2+x﹣2=x2+mx+n,∴m=1,n=﹣2.∴m+n=1﹣2=﹣1.故选:C.4.利用加减消元法解方程组,下列做法正确的是()A.要消去y,可以将①×5+②×2 B.要消去x,可以将①×3+②×(﹣5)C.要消去y,可以将①×5+②×3 D.要消去x,可以将①×(﹣5)+②×2【考点】解二元一次方程组.【分析】方程组利用加减消元法求出解即可.【解答】解:利用加减消元法解方程组,要消去x,可以将①×(﹣5)+②×2.故选D5.下列命题中,为真命题的是()A.六边形的内角和为360度B.多边形的外角和与边数有关C.面积相等的三角形全等 D.三角形两边的和大于第三边【考点】命题与定理.【分析】对每个选项进行判断后找到正确的命题即为真命题.【解答】解:A、六边形的内角和为720°,故错误,为假命题;B、多边形的外角和为360°,与边数无关,故错误,为假命题;C、面积相等的三角形不一定全等,故错误,为假命题;D、三角形的两边之和大于第三边,正确,为真命题,故选D.6.如图,△ABC中,AB=AC,D是BC的中点,AC的垂直平分线分别交AC、AD、AB于点E、O、F,则图中全等三角形的对数是()A.1对B.2对C.3对D.4对【考点】全等三角形的判定;线段垂直平分线的性质;等腰三角形的性质.【分析】根据已知条件“AB=AC,D为BC中点”,得出△ABD≌△ACD,然后再由AC的垂直平分线分别交AC、AD、AB于点E、O、F,推出△AOE≌△EOC,从而根据“SSS”或“SAS”找到更多的全等三角形,要由易到难,不重不漏.【解答】解:∵AB=AC,D为BC中点,∴CD=BD,∠BDO=∠CDO=90°,在△ABD和△ACD中,,∴△ABD≌△ACD;∵EF垂直平分AC,∴OA=OC,AE=CE,在△AOE和△COE中,,∴△AOE≌△COE;在△BOD和△COD中,,∴△BOD≌△COD;在△AOC和△AOB中,,∴△AOC≌△AOB;故选:D.二、填空题:本大题共10小题,每小题3分,共30分.3,则用科学记数法表示为×10﹣3克/厘米3(保留三个有效数字).【考点】科学记数法与有效数字.【分析】科学记数法的表示形式为a×10n的形式,其中1≤|a|<10,n为整数,确定n的值时,要看把原数变成a时,小数点移动了多少位,n的绝对值与小数点移动的位数相同,当原数绝对值大于10时,n是正数,当原数的绝对值小于1时,n是负数.有效数字的计算方法是:从左边第一个不是0的开始,后面所有的数都是有效数字.用科学记数法表示的数,有效数字只与前面a有关,而与n的大小无关.【解答】≈×10﹣3.8.已知m+n=3,m﹣n=2,则m2﹣n2= 6 .【考点】平方差公式.【分析】根据平方差公式,即可解答.【解答】解:m2﹣n2=(m+n)(m﹣n)=3×2=6.故答案为:6.9.不等式组的解集是﹣3<x≤2 .【考点】解一元一次不等式组.【分析】分别求出不等式组中两不等式的解集,找出解集的公共部分即可.【解答】解:,由①得:x≤2,由②得:x>﹣3,则不等式组的解集为﹣3<x≤2.故答案为:﹣3<x≤210.命题“对顶角相等”的逆命题是相等的角为对顶角.【考点】命题与定理.【分析】交换原命题的题设与结论即可得到其逆命题.【解答】解:命题“对顶角相等”的逆命题是“相等的角为对顶角”.故答案为相等的角为对顶角.11.如图,已知AB=BC,要使△ABD≌△CBD,还需添加一个条件,你添加的条件是∠ABD=∠CBD或AD=CD..(只需写一个,不添加辅助线)【考点】全等三角形的判定.【分析】由已知AB=BC,及公共边BD=BD,可知要使△ABD≌△CBD,已经具备了两个S了,然后根据全等三角形的判定定理,应该有两种判定方法①SAS,②SSS.所以可添∠ABD=∠CBD 或AD=CD.【解答】解:答案不唯一.①∠ABD=∠CBD.在△ABD和△CBD中,∵,∴△ABD≌△CBD(SAS);②AD=CD.在△ABD和△CBD中,∵,∴△ABD≌△CBD(SSS).故答案为:∠ABD=∠CBD或AD=CD.12.若a+b=8,ab=10,则a2b+ab2= 80 .【考点】因式分解-提公因式法.【分析】原式提取公因式后,将已知等式代入计算即可求出值.【解答】解:∵a+b=8,ab=10,∴原式=ab(a+b)=80,故答案为:8013.已知△ABC的三个内角分别是∠A、∠B、∠C,若∠A=30°,∠C=2∠B,则这个三角形是钝角三角形.(按角分类)【考点】三角形内角和定理.【分析】首先设∠B=x°,则∠C=2x°,根据题意可得三角形内角和定理可得30+x+2x=180,再解即可.【解答】解:设∠B=x°,则∠C=2x°,由题意得:30+x+2x=180,解得:x=50,则2x°=100°,因此三角形是钝角三角形,故答案为:钝角.14.已知关于x,y的二元一次方程组的解互为相反数,则k的值是﹣1 .【考点】二元一次方程组的解.【分析】将方程组用k表示出x,y,根据方程组的解互为相反数,得到关于k的方程,即可求出k的值.【解答】解:解方程组得:,因为关于x,y的二元一次方程组的解互为相反数,可得:2k+3﹣2﹣k=0,解得:k=﹣1.故答案为:﹣1.15.请看杨辉三角(1),并观察下列等式(2):根据前面各式的规律,则(a+b)6的第三项的系数为15 .【考点】完全平方公式.【分析】通过观察可以看出(a+b)6的展开式为6次7项式,a的次数按降幂排列,b的次数按升幂排列,各项系数分别为1、6、15、20、15、6、1.【解答】解:由题意可得:(a+b)6=a6+6a5b+15a4b2+20a3b3+15a2b4+6ab5+b6,则(a+b)6的第三项的系数为:15.故答案为:15.16.如图,∠C=∠CAM=90°,AC=8,BC=4,P、Q两点分别在线段AC和射线AM上运动,且PQ=AB.若△ABC与△PQA全等,则AP的长度为8或4 .【考点】全等三角形的性质.【分析】分△ABC≌△PQA和△ABC≌△QPA两种情况,根据全等三角形的性质解答即可.【解答】解:当△ABC≌△PQA时,AP=AC=8,当△ABC≌△QPA时,AP=BC=4,故答案为:8或4.三、解答题:本大题共10小题,共102分,解答时应写出必要的步骤.17.计算:(1)(﹣2)2+20160﹣(﹣)﹣2+7×7﹣1;(2)(2a+b)2﹣4(a+b)(a﹣b)﹣b(3a+5b).【考点】整式的混合运算;零指数幂;负整数指数幂.【分析】(1)先计算乘方、零指数幂、负整指数幂,再依次计算乘法和加减;(2)先根据完全平方公式和平方差公式及乘法分配律计算整式的乘方和乘法,再去括号、合并同类项即可.【解答】解:(1)原式=4+1﹣4+7×=1+1=2;(2)原式=4a2+4ab+b2﹣4(a2﹣b2)﹣3ab﹣5b2=4a2+4ab+b2﹣4a2+4b2﹣3ab﹣5b2=ab.18.因式分解:(1)4x2y2+8xy+4;(2)a2(x﹣y)+9b2(y﹣x).【考点】提公因式法与公式法的综合运用.【分析】(1)首先提公因式4,再利用完全平方进行二次分解即可;(2)首先把式子变形为a2(x﹣y)﹣9b2(x﹣y),再提公因式(x﹣y),再次利用平方差公式进行分解即可.【解答】解:(1)原式=4(x2y2+2xy+1)=4(xy+1)2;(2)原式=a2(x﹣y)﹣9b2(x﹣y)=(x﹣y)(a2﹣9b2)=(x﹣y)(a﹣3b)(a+3b).19.解不等式,把它的解集在数轴上表示出来,并求出这个不等式的负整数解.【考点】一元一次不等式的整数解;在数轴上表示不等式的解集;解一元一次不等式.【分析】根据解一元一次不等式基本步骤:去分母、去括号、移项、合并同类项、系数化为1可得不等式的解集,将解集表示在数轴上后可知其负整数解.【解答】解:去分母,得:2(2x﹣1)﹣(9x+2)≤6,去括号,得:4x﹣2﹣9x﹣2≤6,移项,得:4x﹣9x≤6+2+2,合并同类项,得:﹣5x≤10,系数化为1,得:x≥﹣2,将不等式解集表示在数轴上如下:由数轴可知该不等式的负整数解为﹣2、﹣1.20.如图,已知AD是△ABC的高,点E、G分别在AB、AC上,EF⊥BC,垂足为F,∠CGD=∠BAC,若∠1=50°,求∠2和∠B的度数.【考点】平行线的判定与性质.【分析】根据平行线的判定得出DG∥AB,根据平行线的性质得出∠BAD=∠1=50°,根据平行线的判定得出EF∥AD,根据平行线的性质得出∠2即可,根据三角形的外角性质求出∠B 即可.【解答】解:∵∠CGD=∠BAC,∴DG∥AB,∴∠BAD=∠1,∵∠1=50°,∴∠BAD=50°,∵AD是△ABC的高,EF⊥BC,∴∠EFB=90°,EF∥AD,∴∠2+∠BAD=180°,∴∠2=130°,∴∠B=∠2﹣∠EFB=40°.21.观察下列关于自然数的等式:32﹣4×12=5 ①52﹣4×22=9 ②72﹣4×32=13 ③…根据上述规律解决下列问题:(1)完成第四个等式:92﹣4× 4 2= 17 ;(2)写出你猜想的第n个等式(用含n的式子表示),并验证其正确性.【考点】规律型:数字的变化类;完全平方公式.【分析】由①②③三个等式可得,被减数是从3开始连续奇数的平方,减数是从1开始连续自然数的平方的4倍,计算的结果是被减数的底数的2倍减1,由此规律得出答案即可.【解答】解:(1)32﹣4×12=5 ①52﹣4×22=9 ②72﹣4×32=13 ③…所以第四个等式:92﹣4×42=17;(2)第n个等式为:(2n+1)2﹣4n2=4n+1,左边=(2n+1)2﹣4n2=4n2+4n+1﹣4n2=4n+1,右边=4n+1.左边=右边∴(2n+1)2﹣4n2=4n+1.22.欢欢与乐乐两人共同计算(2x+a)(3x+b),欢欢抄错为(2x﹣a)(3x+b),得到的结果为6x2﹣13x+6;乐乐抄错为(2x+a)(x+b),得到的结果为2x2﹣x﹣6.(1)式子中的a、b的值各是多少?(2)请计算出原题的正确答案.【考点】多项式乘多项式.【分析】(1)根据由于欢欢抄错了第一个多项式中的a符号,得出的结果为6x2﹣13x+6,可知(2x﹣a)(3x+b)=6x2+(2b﹣3a)x﹣ab=6x2﹣13x+6,于是2b﹣3a=﹣13①;再根据乐乐由于漏抄了第二个多项式中的x的系数,得到的结果为2x2﹣x﹣6,可知常数项是﹣6,可知(2x+a)(x+b)=2x2﹣x﹣6,可得到2b+a=﹣1②,解关于①②的方程组即可求出a、b的值;(2)把a、b的值代入原式求出整式乘法的正确结果.【解答】解:(1)根据题意可知,由于欢欢挑错了第一个多项式中的a的符号,得到的结果为6x2﹣13x+6,那么(2x﹣a)(3x+b)=6x2+(2b﹣3a)x﹣ab=6x2﹣13x+6,可得2b﹣3a=﹣13 ①乐乐由于漏抄了第二个多项式中的x的系数,得到的结果为2x2﹣x﹣6,可知(2x+a)(x+b)=2x2﹣x﹣6即2x2+(2b+a)x+ab=2x2﹣x﹣6,可得2b+a=﹣1 ②,解关于①②的方程组,可得a=3,b=﹣2;(2)正确的式子:(2x+3)(3x﹣2)=6x2+5x﹣623.已知和,都是方程y=kx+b的解.(1)求k、b的值;(2)若﹣1≤x<2,求y的取值X围.【考点】解一元一次不等式组;二元一次方程的解.【分析】(1)把和代入方程y=kx+b得关于k、b的方程组,解方程组可得k、b的值;(2)把k、b的值代入y=kx+b,然后利用含y的式子表示x,利用等量代换可得关于y的一元一次不等式,再解即可.【解答】解:(1)把和代入方程y=kx+b得:,解得:;(2)把k=2,b=﹣4代入方程y=kx+b得:y=2x﹣4,则x=,∵﹣1≤x<2,∴﹣1≤<2,解得:﹣6≤y<0.24.某电器商场销售A、B两种型号计算器,两种计算器的进货价格分别为每台30元,40元,商场销售5台A型号和1台B型号计算器,可获利润76元;销售6台A型号和3台B 型号计算器,可获利润120元.(1)求商场销售A、B两种型号计算器的销售价格分别是多少元?(利润=销售价格﹣进货价格)(2)商场准备用不多于2500元的资金购进A、B两种型号计算器共70台,问最少需要购进A型号的计算器多少台?【考点】一元一次不等式的应用;二元一次方程组的应用.【分析】(1)首先设A种型号计算器的销售价格是x元,A种型号计算器的销售价格是y元,根据题意可等量关系:①5台A型号和1台B型号计算器,可获利润76元;②销售6台A 型号和3台B型号计算器,可获利润120元,根据等量关系列出方程组,再解即可;(2)根据题意表示出所用成本,进而得出不等式求出即可.【解答】解:(1)设A种型号计算器的销售价格是x元,B种型号计算器的销售价格是y元,由题意得:,解得:;答:A种型号计算器的销售价格是42元,B种型号计算器的销售价格是56元;(2)设购进A型计算器a台,则购进B台计算器:(70﹣a)台,则30a+40(70﹣a)≤2500,解得:a≥30,答:最少需要购进A型号的计算器30台.25.(1)如图(1),已知:在△ABC中,∠BAC=90°,AB=AC,直线m经过点A,BD⊥直线m,CE⊥直线m,垂足分别为点D、E,证明:DE=BD+CE.(2)如图(2),将(1)中的条件改为:在△ABC中,AB=AC,D、A、E三点都在直线m上,并且有∠BDA=∠AEC=∠BAC=α,其中α为任意锐角或钝角.请直接写出线段DE、BD、CE之间的数量关系(不要求说明理由);(3)将(1)中的直线m绕点A旋转,使其与BC边相交,则结论DE=BD+CE是否还成立?如成立,请你给出证明;若不成立,请写出所有可能的结论,并在图3中画出相应的图形.【考点】三角形综合题.【分析】(1)由条件可证明△ABD≌△CAE,可得DA=CE,AE=BD,可得DE=BD+CE;(2)由条件可知∠BAD+∠CAE=180°﹣α,且∠DBA+∠BAD=180°﹣α,可得∠DBA=∠CAE,结合条件可证明△ABD≌△CAE,同(1)可得出结论;(3)分成m⊥BC和m与AC的夹角小于45°,大于45°三种情况进行讨论,第一种情况根据等腰三角形的性质即可判断,第二种情况下与(1)相同利用全等三角形的性质可得,第三种情况相同.【解答】(1)证明:∵BD⊥DE,CE⊥DE,∴∠BDA=∠CEA=90°,∵∠BAC=90°,∴∠BAD+∠CAE=∠BAD+∠ABD=90°,∴∠ABD=∠CAE,在△ABD和△CAE中∴△ABD≌△CAE(AAS),∴BD=AE,CE=DA,∴DE=AE+DA=BD+CE;(2)解:成立,证明如下:∵∠BDA=∠AEC=∠BAC=a,∴∠BAD+∠CAE=180°﹣α,且∠DBA+∠BAD=180°﹣α,∴∠DBA=∠CAE,在△ABD和△CAE中,∴△ABD≌△CAE(AAS),∴BD=AE,CE=DA,∴DE=AE+DA=BD+CE;(3)当m⊥BC时,根据D和E重合,则DE=0,BD=CE;当m与AC的夹角小于45°时,如图,∵∠BAD+∠CAE=90°,直角△AD中,∠ABD+∠BAD=90°,∴∠CAE=∠ABD,∴△ABD和△CAE中,,∴△ABD≌△CAE,∴BD=AE,EC=AD,又∵DE=AE﹣AD,∴DE=BD﹣CE;同理,当m与AC的夹角大于45°,小于90°时,DE=CE﹣BD.26.如图,已知△ABC中,AB=AC=10cm,BC=8cm,D为AB的中点,点P在线段BC上由B点出发向C点运动,同时点Q在线段CA上由C点出发向A点运动.设运动时间为ts.(1)证明:∠B=∠C;(2)若点P的速度是3cm/s,点Q的运动速度与点P的运动速度相等,则t为何值时△BPD 与△CQP全等?请说明理由;(3)若点P的速度比点Q的速度慢1cm/s,则点Q的运动速度为多少时,能使△BPD与△CQP 全等?请说明理由.【考点】三角形综合题.【分析】(1)根据全等三角形的判定和性质即可得到结论;(2)求出BP、CQ、CP,根据全等三角形的判定推出即可;(3)设当点Q的运动速度为x厘米/时,点P的速度是(x﹣1)cm/s,时间是t小时,能够使△BPD与△CQP全等,求出BD=5厘米,BP=(x﹣1)t厘米,CP=[8﹣(x﹣1)t]厘米,CQ=xt 厘米,∠B=∠C,根据全等三角形的性质得出方程,求出方程的解即可.【解答】解:(1)过A作AD⊥BC,∴∠ADB=∠ADC=90°,在Rt△ABD与Rt△ACD中,,∴Rt△ABD≌Rt△ACD,∴∠B=∠C;(2)点Q的运动速度与点P的运动速度相等,经过1秒后,△BPD与△CQP全等,理由是:∵AB=AC=10厘米,点D为AB的中点,∴∠B=∠C,BD=5厘米,∵BP=CQ=3t厘米=3厘米,∴CP=8厘米﹣3厘米=5厘米=BD,在△DBP和△PCQ中,,∴△DBP≌△PCQ(SAS);(3)设当点Q的运动速度为xcm/s,点P的速度是(x﹣1)cm/s,时间是t小时,能够使△BPD与△CQP全等,∵BD=5厘米,BP=(x﹣1)t厘米,CP=[8﹣(x﹣1)t]厘米,CQ=xt厘米,∠B=∠C,∴当BP=CQ,BD=CP或BP=CP,BD=CQ时,△BPD与△CQP全等,即①(x﹣1)t=xt,5=8﹣(x﹣1)t(不合题意,舍去),②(x﹣1)t═8﹣(x﹣1)t,5=xt,解得:x=5,即当点Q的运动速度为5厘米/时时,能够使△BPD与△CQP全等.。
兴化市顾庄学区三校2016-2017学年七年级数学下学期期末考试试题
江苏省兴化市顾庄学区三校2016—2017学年七年级数学下学期期末考试试题注意:1.本试卷共4页,满分为150分,考试时间为120分钟.2.答题前,考生务必将本人的学校、班级、姓名、考试号填写在答题纸相应的位置上.3.考生答题必须用0.5毫米黑色墨水签字笔,写在答题纸指定位置处,答在试卷、草稿纸等其他位置上一律无效.一、选择题(本大题共有6小题,每小题3分,共18分)1.化简﹣b•b 3•b 4的正确结果是( ▲ )A .﹣b 7B .b 7C .-b 8D .b 82.已知⎩⎨⎧==32y x 是关于x 、y 的方程4kx-3y=—1的一个解,则k 的值为( ▲ )A.1 B 。
—1 C.2 D.—23.不等式2x+1≥5的解集在数轴上表示正确的是( ▲ )4.若多项式)3)(1(-+x x =b ax x ++2,则a ,b 的值分别是( ▲ )A .2=a ,3=bB .2-=a ,3-=bC .2-=a ,3=bD .2=a ,3-=b5.下列命题中,为真命题的是( ▲ )A .如果-2x >-2,那么x >1B .如果a 2=b 2,那么a 3=b 3C .面积相等的三角形全等D .如果a ∥b ,b ∥c ,那么a ∥c6.如图,在△ABC 中,P 、Q 分别是BC 、AC 上的点,作PR ⊥AB ,PS ⊥AC ,垂足分别为R 、S,若AQ =PQ ,PR =PS,则结论:①PA 平分∠RPS ;②AS =AR ;③QP ∥AR;④△BRP ≌△CSP 。
其中正确的有( ▲ )A .4个B .3个C .2个D .1个 (第6题图)二、填空题(本大题共有10小题,每小题3分,共30分)7.生物学家发现了一种病毒的长度约为0。
00000432毫米,数据0。
00000432用科学记数法表示为▲ .8.一个长方体的长、宽、高分别是3x-4,2x 和x,它的体积等于 ▲ .9.不等式组⎪⎩⎪⎨⎧<≥-3203x x ,的解集是▲ .10.命题“如果a >b,那么ac >bc ” 的逆命题是_ ▲ 命题(填“真”或“假”). 11.如图所示,AB=DB,∠ABD=∠CBE,请你添加一个适当的条件 ▲ ,使△ABC ≌△DBE (只需添加一个即可,不添加辅助线)。
江苏省兴化市顾庄学区三校2016-2017学年七年级下学期期末考试英语试题
2016-2017学年度第二学期学业质量抽测七年级英语试卷注意:1. 本试卷共8页,满分为150分,考试时间为120分钟。
2. 答题前,考生务必将本人的学校、班级、姓名、学号填写在答题纸相应的位置上。
3. 考生答题必须用0.5毫米黑色墨水签字笔,写在答题纸指定位置处,答在试卷、草稿纸等其他位置上一律无效。
第一部分选择题(共85分)一、听力(共20小题,每小题1分,计20分.)第一部分听对话回答问题本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍。
(10分)( )1.What animals are they taling about?A. B. C.( )2. Which sport does the boy lie best?A. B. C.( )3.How does the boy’s father go to wor?A B C.( ).4. Which city does ate lie to go to?A.B. C.( )5. What does Simon want to do?A. To wash the cage.B. To feed the parrot.C. To do nothing.( )6. What is Mary doing now?A. Speaing English.B. Writing a letter to her friend.C. Practicing basetball.( )7. How often does Amy tae her dog for a wal?A. Once a day.B. Twice a day.C. Three times a day.( )8. Why are the worers having a rest?A. Because they are too dirty.B. Because it’s too late.C. Because they’re too tired.( )9. Which subject is Helen’s favorite?A. Geography. B Computer Studies. C. Maths.( )10. What day is it tomorrow?A. It is Sunday.B. It is Saturday.C. It is Friday.第二部分听对话和独白回答问题(计10分,每小题1分)你将听到一段对话和两段独白,听两遍。
顾庄学区七年级生物下学期期末考试试题(2021学年)
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试试题第一大题单项选择题共35题,每题2分1。
我国著名的“四大家鱼”是( )A.青鱼、草鱼、鲢鱼、鳙鱼B。
青鱼、鲫鱼、鲢鱼、鳙鱼C。
青鱼、鲫鱼、鲤鱼、鳙鱼 D.青鱼、鲤鱼、鲢鱼、鳙鱼2.家兔位于胸腔里的器官是( )A.心脏和胃 B。
心脏和肝脏C。
肺和胆囊D。
心脏和肺3。
下列生物中,属于鱼类的是( )A甲鱼B.鳄鱼 C. 娃娃鱼 D.海马4.蚯蚓生活在土壤中,下列说法不正确的是( )A.蚯蚓能分解土壤中的有机质B.蚯蚓能通过肌肉和刚毛的协助进行运动C.蚯蚓的呼吸要靠分泌粘液保持湿润的体壁来完成D.蚯蚓属于软体动物5.白菜属于被子植物的主要依据是( )A。
种子外无果皮包被 B.种子外有果皮包被C.有根、茎、叶的分化D.营养方式为自养6.酵母菌、蘑菇等真菌和细菌、放线菌的最主要的区别是()A.具有细胞壁 B.有真正的细胞核C.用孢子繁殖 D.营腐生生活7.“金蝉脱壳”中的“壳"是蝉的外骨骼,外骨骼的主要作用是()A.抵御敌害 B.协助运动C.有利于捕食 D.防止体内水分蒸发8。
分类单位由大到小依次排列的正确顺序是( )A.门、纲、目、科、属、种B.门、纲、属、种、目、科C.门、纲、科、目、属、种D.门、纲、科、种、目、属9。
下列选项所述植物都属于藻类植物的是( )A.桃、梨、杏、苹果 B.衣藻、水绵、海带、紫菜C.卷柏、浮萍、苏铁、狗尾草D.葫芦藓、水稻、水杉、西瓜10。
2016-2017学年江苏省泰州市兴化市顾庄学区三校七年级(下)期末英语试卷含答案
2016-2017学年江苏省泰州市兴化市顾庄学区三校七年级(下)期末英语试卷一、听力(共10小题,每小题1分,计20分.)第一部分听对话回答问题本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍.(10分)1.(1分)What animals are they talking about?2.(1分)Which sport does the boy like best?3.(1分)How does the boy's father go to work?4.(1分)Which city does Kate like to go to?5.(1分)What does Simon want to do?A.To wash the cage.B.To feed the parrot.C.To do nothing.6.(1分)What is Mary doing now?A.Speaking English.B.Writing a letter to her friend.C.Practicing basketball.7.(1分)How often does Amy take her dog for a walk?A.Once a day.B.Twice a day.C.Three times a day.8.(1分)Why are the workers having a rest?A.Because they are too dirty.B.Because it's too late.C.Because they're too tired.9.(1分)Which subject is Helen's favorite?A.Geography.B.Computer Studies.C.Maths.10.(1分)What day is it tomorrow?A.It is Sunday.B.It is Saturday.C.It is Friday.第二部分听对话和独白回答问题(计10分,每小题2分)你将听到一段对话和两段独白,听两遍.11.(2分)听一段对话,回答11﹣12小题.11.John has to first.A.help his mother with houseworkB.finish his homeworkC.see a film12.He may go to the cinema with his friend.A.todayB.tomorrowC.the day after tomorrow.13.(3分)听第一段独白,回答第13﹣15小题.请根据短文内容,选择正确答案,完成信息记录表.13.A.bus B.car C.bike14.A.early B.late C.slowly15.A.Few B.A few C.Many.16.(5分)听第二段独白,回答16﹣20小题16.What does Li Ming want to know when he goes to England?A.The people's names.B.The people's ages.C.Something about English people.17.Who did Li Ming see in the street?A.A boy.B.A girl.C.A woman.18.Was the girl polite at first?A.Yes,she was.B.No,she wasn't.C.We're not sure.19.Why did the girl become angry?A.Because Li Ming wanted to know her name.B.Because Li Ming wanted to know her age.C.Because Li Ming wanted to know how to get to the shop.20.What did Li Ming say at last?A.We are in China,not in England.B.We are in England,not in China.C.We are in the street,not at home.二、单项选择从下列每题所给的选项中,选择一个最佳答案.(20分)21.(1分)﹣Look,is it ________ UFO?﹣No,it's just ________ kite with light.()A.an;the B.the;a C.an;a D.a;a22.(1分)The Belt and Road Forum for International Cooperation(一带一路国际合作高峰论坛)began _________ the morning of May14,2017 _______ Beijing,China.()A.in;in B.on;in C.on;on D.in;on23.(1分)They were very___________ to see so many___________ things.()A.amazing,amazed B.amazed,amazedC.amazed,amazing D.amazing,amazing24.(1分)The moonlight is shining(照耀)in _________ the window.Everything in the room looks so nice.()A.over B.across C.through D.past25.(1分)Do you know what_____________ Zhang Lei yesterday?()A.happened B.happened toC.happens to D.will happen to26.(1分)﹣Mum,there is milk in the fridge.Let's go and buy some.﹣OK.()A.few B.a few C.little D.a little27.(1分)He____________ down the hole and _____________ very sad.()A.fell,feels B.felt,fell C.fell,felt D.felt,felt28.(1分)﹣When were you in Nanjing?﹣____________________.()A.This coming June B.One month agoC.Tomorrow D.Next week29.(1分)﹣Could you tell me ____________ in today's newspaper?﹣Sorry,_______________.()A.something special;special nothingB.special something;special nothingC.something special;nothing specialD.anything special;something special30.(1分)heavy smoke it is!The house must be on fire.()A.What B.How C.What a D.How a31.(1分)!It's dangerous to skate over there.()A.Look over B.Look at C.Look out D.Look up32.(1分)Simon likes _______the goldfish _______ around.()A.looking;swimming B.watching;swimC.to see;to swim D.looking at;to swim33.(1分)﹣How do you say"3,698"in English?﹣__________________.()A.Three thousand,six hundred ninety﹣eightB.Three thousands,six hundreds and ninety﹣eightC.Three thousand,six hundred and ninety﹣eightD.Three thousand,six hundred and ninety eight34.(1分)These two bicycles are the .They are .()A.twins';Lucy's and Lily'sB.twin's;Lucy's and Lily'sC.Twins;Lucy and Lily'sD.twins';Lucy and Lily's35.(1分)﹣Did you watch the animal show yesterday?﹣No.We were to catch the last bus.()A.too early B.too late C.late enough D.early enough36.(1分)There was a fire last night,but the firemen____ soon.()A.put down it B.put it up C.put out it D.put it out37.(1分)She is woman,but she is very healthy.()A.a 80﹣year﹣old B.80 years oldC.an 80﹣years﹣old D.an 80﹣year﹣old38.(1分)﹣Will you please for my dinner,Peter?﹣Sure!()A.spend B.pay C.cost D.take39.(1分)After stopping the car and drinking some water,Tom_______ feel sick________.()A.didn't,no more B.didn't,any moreC.did,any more D.not,any more40.(1分)﹣﹣﹣Excuse me!You can't take photos here.Look at the sign.It says"NO PHOTOS".﹣﹣﹣Sorry,I _________it.()A.didn't see B.am going to seeC.won't see D.don't see三、完形填空阅读短文,从每题所给选项中选出可以填入空白处的最佳选项.(15分)41.(15分)Mr.Evans lived in a city.He was a maths(41)three years ago.He taught well and his students (42)him.So he decided to work in the middle school all his life.But a terrible accident(可怕的事故)(43)his life.One spring he took his class to(44)an interesting place.The children saw a lot of(45)things and had a good time there.But on their way to school,a truck(卡车)hit their(46)because the young driver was drunk(酒驾).Five students(47)and more than half the students were(48)in the accident.He didn't know how it happened and was very(49)it and after he came out of hospital,he left school and became a(50).He tried his best to stop the drivers from breaking the traffic laws(交通规则).He worked hard and was strict(要求严格)with the drivers.So they were afraid of him.One afternoon it was very hot.Mr.Evans was(51.He was standing at the crossing and watching the traffic.Suddenly he saw a car(52)the crossing.It ran so fast that it almost hit a man(53) a bike.He stopped it at once and saw a girl in it."(54)your license (执照)to me,Madam,"said Mr.Evans.The girl gave her bag to him and said,"Please look for it in the bag yourself.I can't see(55)without glasses."41.A.worker B.teacher C.doctor D.farmer 42.A.liked B.wished C.helped D.hated 43.A.hit B.won C.lost D.changed 44.A.build B.break C.visit D.find 45.A.sad B.dangerous C.safe D.interesting 46.A.bus B.train C.car D.ship 47.A.left B.lived C.Died(死亡)D.fell 48.A.surprised B.hurt C.locked D.unusual 49.A.sad about B.afraid of C.interested in D.worriedabout 50.A.shopkeeper B.policeman C.cleaner D.driver 51.A.at home B.in the office C.at work D.at school 52.A.rushed B.to rush C.rush D.rushing 53.A.on B.in C.by D.with 54.A.Send B.Sell C.Show D.Lend 55.A.something B.nothing C.anything D.you.四、阅读理解阅读下列三篇短文,根据短文内容选择最佳答案.(30分)56.(10分)56.Sunshine Rock Band needs.A.a violin playerB.a reporterC.a swimming coach(教练)D.a table tennis coach57.If you can swim very well and like children very much,you will be more interested in the advertisement(广告)A.firstB.secondC.thirdD.fourth58.If you like writing,you can call for a job.A.8472﹣9999B.8665﹣7868C.5561﹣8823D.5487﹣659859.Your classmate wants to learn table tennis,so you can advise(建议)her to call.A.JoeB.Mr ZhangC.KarenD.Mike60.The above ads(广告)are probably(可能)from.A.a newspaperB.a story bookC.a science bookD.a history book.61.(10分)Jyoti Amge,an Indian(印度)girl,is the world's smallest woman.She is only 0.628metres tall.She is small,but her dream is great.On her 18th birthday in 2012,she shared the good news with others.She would act(表演)in two movies.Jyoti is the youngest of the five children in her family.She stopped growing after her first birthday.Because of her size,Jyoti has special clothes and jewellery(珠宝首饰).She even has her own desk and chair in a regular(普通的)school.Jyoti also loves movies and fashionable dresses like other teenagers(青少年).Before 18,she acted in a music video along with a famous Indian singer.Jyoti said,"I'm just the same as other people.I eat like you,and dream like you.I don't feel any different." 61.How old is Jyoti Amge in 2013?A.16years old.B.17years old.C.18years old.D.19years old.62.On her 18th birthday,Jyoti said she would.A.have a dreamB.act in moviesC.go to schoolD.Dance63.How many sisters and brothers does she have?A.3.B.4.C.5.D.6.64.Jyoti's is(are)the same as others'.A.clothesB.jewelleryC.chairD.school65.What did Jyoti do before 18?A.She acted in a music video.B.She played in two movies.C.She sang a song in a movie.D.She made special clothes for herself.66.(10分)Today,people want to keep healthy through sports and exercise.But some of them have some wrong ideas about it."A plate of chicken is a good meal before games because it has much energy."In fact,the best meal before games should have carbohydrates(碳水化合物).Food like potatoes,bread,bananas are rich (富有…的)in it,but chicken and meat are not."The best time to exercise is early in the morning."No!Morning is a good time to exercise,but it may not be suitable for(适合)you.If an afternoon or evening period is suitable for you,and you enjoy the feeling of getting healthier,you can choose(选择)any time to exercise.So there is no fixed time for you to exercise."If you drink water when you exercise,you'll feel tired."The fact is that you must have some water during breaks (休息时间)when you exercise.And after exercising,you must have enough water.If you don't drink enough water,then you may feel tired."Exercising every day is quite important."Wrong!Too much exercise is bad for our health.You need to give your body a day of rest.66.It is good for you to eat before games.A.bananasB.chickenC.meatD.beef67.The underlined word"fixed"probably means in Chinese.A.重要的B.困难的C.固定的D.简单的68.The writer would like you to.A.eat much meat before exercisingB.drink enough water after exercisingC.take exercise only in the morningD.exercise every day69.Which of the following is TRUE according to the passage?A.Don't drink water when you exercise,or you'll feel tired.B.Evening is the best time to exercise because it's always cool.C.You should eat enough meat because they can give you energy before games.D.Exercising too much is not good for us.70.Which of the following will be the best title (标题)?A.Results (结果)of sports and exercise.B.Best time for sports and exercise.C.Reasons for sports and exercise.D.Wrong ideas about sports and exercise.五、任务型阅读阅读下面的材料,根据材料内容完成后面的表格,每空填写一个单词,每词1分.(10分)71.(10分)Let me tell you about my hometown.I live in Kinsale.It may be one of the smallest towns in Southern Ireland,but it is also the most famous one.The fish restaurants are very wonderful and there are many good cooks here.They cook the best fish for people.The food is expensive but people enjoy it very much.So you can see many people from different countries in every restaurant.My town is very beautiful because it is by the sea.In summer it is very cool and you can go swimming in the sea.There are three small shops and you can buy your friends many souvenirs (纪念品)there.They are very cheap and you can pay a little money for them.The people in my town are friendly.They can make friends with you.If you feel sick,there is a clinic (诊所)with a doctor and a nurse.I'm Andy.You can ask me for help when you have some trouble(困难,麻烦).I think you will enjoy the holiday.六、阅读表达阅读下面短文,回答问题共1小题,每小题10分,计10分81.(10分)Frank is my friend.His family is rich.His parents always give him lots of pocket money.But Frank thinks his parents work very hard and it's not easy for them,so he always tries his best to save(节约)money.He has some good ways to do it.Frank likes reading.He has lots of books.He tells me he often buys books online,because they're cheaper.And when he has free time,he goes to bookstores or libraries to do some reading.Frank has a bike.He usually goes to school by bike.Sometimes when it rains or snows,he walks.These two ways help Frank keep healthy and save some money.Frank brings a bottle of water to school every day.When other students drink juice,he enjoys his water.He thinks water is the cheapest but the best drink.Some students think Frank is mean(刻薄的).But I don't think so.I think he is right.What do you think of him?回答下面5个问题,每题答案不超过5个词.81.What is F rank's family like?82.What's Frank's hobby?83.When does Frank do some reading in bookshops or libraries?84.How does Frank go to school when it snows?85.How often does Frank bring water to school?.七、词汇运用(15分)A.根据句意及汉语提示写出单词(每空限一词)(5分)86.(1分)You should knock at the door before you(进入)the room.87.(1分)During the(二十)century,mobile phones become popular all over the world.88.(1分)As(通常),Andy goes swimming in the afternoon with his good friend David.89.(1分)He(想知道)how to cook when he saw his father cook nice food.90.(1分)My father is an office worker in a big company.He is(超过)forty years old now.B.用括号内所给词的适当形式填空(每空不限一词).(10分)91.(1分)Yesterday he saw me and(nod)to me in front of the library.92.(1分)It's time for class.Please stop.(talk)93.(1分)The girl found(she)alone in the classroom.94.(1分)What will you do if the door is_(lock)?95.(1分)I decide(climb)up the hill with my classmates this weekend.96.(1分)Why(not open)the window?It's very hot inside.97.(1分)Five days(late),he came to my home again and took away that computer.98.(1分)That's too(noise)outside.I can't get to sleep.Please close the windows.99.(1分)My little sister made the same mistakes(错误)again because she was too(care).100.(1分)Lily is very happy to see her mother and runs(quick)to her.八、短文填空根据短文内容及首字母提示,补全空格内单词,使短文完整、通顺.(10分)101.(10分)Fire can help people in many w(1).Fire can keep your house warm,give light and cook food.But s(2)fire can also be very harmful(有Nobody k(4)how people began to use fire,but there are many interesting old stories about how a man searched for a fire.One is about a man called Prometheus(普罗米修斯).The man lived a very long time a(5).He went up to the sun and b(6)fire down.Today people know how to make a fire with m(7).Children sometimes like to play with them.But matches can be very d(8).One match can burn a piece of paper,and then it could burn a house.A small fire can turn into(变成)a big fire quickly.So you must be careful with matches.Be careful with fire,and it will h(9)you.But if you aren't careful with fire,it may h(10)you.九、书面表达(共1题;满分20分)111.(20分)假如你是Alice,你想写一封推荐信,推荐你的同学Daniel获得今年的新星奖.推荐信字数为100词左右.开头,结尾已给出,不计入总字数.Dear Sir/Madam,I would like to recommend Daniel for this year's Young Star Award.Daniel is a helpful boy.He is brave,too.All the students in our class think that Daniel should get the award.We look forward to hearing from you soon.Yours faithfully,Alice.2016-2017学年江苏省泰州市兴化市顾庄学区三校七年级(下)期末英语试卷参考答案与试题解析一、听力(共10小题,每小题1分,计20分.)第一部分听对话回答问题本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍.(10分)1.(1分)What animals are they talking about?【解答】B2.(1分)Which sport does the boy like best?【解答】A3.(1分)How does the boy's father go to work?【解答】B4.(1分)Which city does Kate like to go to?【解答】C5.(1分)What does Simon want to do?A.To wash the cage.B.To feed the parrot.C.To do nothing.【解答】A6.(1分)What is Mary doing now?A.Speaking English.B.Writing a letter to her friend.C.Practicing basketball.【解答】B7.(1分)How often does Amy take her dog for a walk?A.Once a day.B.Twice a day.C.Three times a day.【解答】A8.(1分)Why are the workers having a rest?A.Because they are too dirty.B.Because it's too late.C.Because they're too tired.【解答】C9.(1分)Which subject is Helen's favorite?A.Geography.B.Computer Studies.C.Maths.【解答】A10.(1分)What day is it tomorrow?A.It is Sunday.B.It is Saturday.C.It is Friday.【解答】A第二部分听对话和独白回答问题(计10分,每小题2分)你将听到一段对话和两段独白,听两遍.11.(2分)听一段对话,回答11﹣12小题.11.John has to B first.A.help his mother with houseworkB.finish his homeworkC.see a film12.He may go to the cinema with his friend B.A.todayB.tomorrowC.the day after tomorrow.【解答】BB13.(3分)听第一段独白,回答第13﹣15小题.请根据短文内容,选择正确答案,完成信息记录表.13.A.bus B.car C.bike15.A.Few B.A few C.Many.【解答】CBA16.(5分)听第二段独白,回答16﹣20小题16.What does Li Ming want to know when he goes to England?A.The people's names.B.The people's ages.C.Something about English people.17.Who did Li Ming see in the street?A.A boy.B.A girl.C.A woman.18.Was the girl polite at first?A.Yes,she was.B.No,she wasn't.C.We're not sure.19.Why did the girl become angry?A.Because Li Ming wanted to know her name.B.Because Li Ming wanted to know her age.C.Because Li Ming wanted to know how to get to the shop.20.What did Li Ming say at last?A.We are in China,not in England.B.We are in England,not in China.C.We are in the street,not at home.【解答】CBABA二、单项选择从下列每题所给的选项中,选择一个最佳答案.(20分)21.(1分)﹣Look,is it ________ UFO?﹣No,it's just ________ kite with light.()A.an;the B.the;a C.an;a D.a;a只带灯的风筝.".第一个空,泛指一个不明飞行物,UFO是以辅音音素开头的,用a修饰.第二个空,泛指一个带灯的风筝,kite是以辅音音素开头的,用a修饰.答案是D.22.(1分)The Belt and Road Forum for International Cooperation(一带一路国际合作高峰论坛)began _________ the morning of May14,2017 _______ Beijing,China.()A.in;in B.on;in C.on;on D.in;on【解答】答案:B.结合语境可以推断这句话表达的意思是"一带一路国际合作高峰论坛于2017年5月14日在中国北京开始了.",第一个设空处的介词短语表达的意思是"在2017年5月14日",应该用介词on;第二个设空处的介词短语表达的意思是"在中国北京",用介词in,故选B23.(1分)They were very___________ to see so many___________ things.()A.amazing,amazed B.amazed,amazedC.amazed,amazing D.amazing,amazing【解答】答案:C根据题意"他们惊诧的看到很多让人惊诧的事情.",可知第一个空修饰they,用amazed;第二个空修饰things,用amazing,故选C.24.(1分)The moonlight is shining(照耀)in _________ the window.Everything in the room looks so nice.()A.over B.across C.through D.past【解答】答案:C,考察介词辨析,A,在…之上(高于某物);B,从表面横过;C,表示从内部穿过;D,从身边经过,根据句意可知是月光穿过窗户,由此确定答案为C.25.(1分)Do you know what_____________ Zhang Lei yesterday?()A.happened B.happened to【解答】答案:B根据题意"你知道张磊昨天发生什么事了吗?",可知yesterday表示一般过去时,结合句型sth happen to sb某人发生某事,故选B.26.(1分)﹣Mum,there is milk in the fridge.Let's go and buy some.﹣OK.()A.few B.a few C.little D.a little【解答】答案:C.few意为"几乎没有",用在句中常为否定意义,其后常接可数名词复数,a few意为"有一些",用于句中常为肯定意义,其后常接可数名词复数,little意为"几乎没有",用于句中是否定意义,其后常接不可数名词;a little意为"有一点儿",用于句中属于肯定意义,其后常接不可数名词;.根据句中关键词milk"牛奶"是不可数名词,可排除A,B,再根据Let's go and buy some,可知冰箱里的牛奶剩下的不多了,几乎没有了,表达否定的意义,故填little,故选C.27.(1分)He____________ down the hole and _____________ very sad.()A.fell,feels B.felt,fell C.fell,felt D.felt,felt【解答】答案:C.结合所给的提干表达的是过去的动作,故用一般过去时,fall down其中fall的过去式fell.feel的过去时felt,故答案是C.28.(1分)﹣When were you in Nanjing?﹣____________________.()A.This coming June B.One month agoC.Tomorrow D.Next week【解答】答案:B.This coming June今年六月;One month ago一个月之前;Tomorrow明天;Next week 下周.根据When were you in Nanjing,可知你什么时候在南京,这里时态是一般过去时,由此判断发生在过去,所以用表示过去的时间短语.One month ago一个月之前表示一个过去的时间.故选B.29.(1分)﹣Could you tell me ____________ in today's newspaper?﹣Sorry,_______________.()A.something special;special nothingB.special something;special nothingC.something special;nothing specialD.anything special;something special【解答】答案:C.something意思是"某事,某物"一般用在肯定句中,用在疑问句中时表示希望对方给予肯定回答;nothing意思是"没有什么事情";anything 意思是"任何事物"这几个都是不定代词,如果有形容词修饰不定代词的话,形容词要放在不定代词的后面.根据"Could you tell me ____________ in today's newspaper?"以及答语"Sorry,_______________."因此可知这句话的意思是"﹣﹣你能告诉我们在今天的报纸上有什么特别的新闻吗?﹣﹣对不起,没有什么特别的."综上所述,故选C.30.(1分)heavy smoke it is!The house must be on fire.()A.What B.How C.What a D.How a【解答】答案:A.根据heavy smoke it is!可知这里考查了感叹句,本句的中心词是smoke,它是一个不可数名词,heavy是一个形容词,在这里修饰smoke,根据What+形容词+可数名词复数/不可数名词+主语+谓语!故选A.31.(1分)!It's dangerous to skate over there.()A.Look over B.Look at C.Look out D.Look up【解答】答案:C.考查动词短语.句意"当心!在那边滑冰很危险.".A仔细检查.B看.C当心.D查找.结合语境"在那边滑冰很危险",可知应该是当心.答案是C.32.(1分)Simon likes _______the goldfish _______ around.()A.looking;swimming B.watching;swimC.to see;to swim D.looking at;to swim【解答】答案:B.look指集中注意力地看,是有意的,强调"看"的动作.单独使用时,用来引起对方的注意;如果跟宾语,要和at连用;see强调"看"的结果,意为"看见、看到";watch强调"专注地看",有欣赏的意味,常用于看电视、看球赛等.根据Simon likes _______the goldfish _______ around,可知Simon 喜欢看金鱼游泳,like doing sth 表示喜欢做某事;这里看金鱼应该是专注的看,应该用watch,watch sb do sth 表示看某人做某事.故选B.33.(1分)﹣How do you say"3,698"in English?﹣__________________.()A.Three thousand,six hundred ninety﹣eightB.Three thousands,six hundreds and ninety﹣eightC.Three thousand,six hundred and ninety﹣eightD.Three thousand,six hundred and ninety eight【解答】答案:C,根据问句How do you say"3,698"in English?﹣﹣你怎么用英语说3698?数字的表示中thousand、hundred后没有s,所以排除B,百位后应用and连接,排除A,98用表述为ninety﹣eight,故排除D,选C.34.(1分)These two bicycles are the .They are .()A.twins';Lucy's and Lily'sB.twin's;Lucy's and Lily'sC.Twins;Lucy and Lily'sD.twins';Lucy and Lily's【解答】答案:A根据题意"这两辆自行车是双胞胎的.它们是lily和lucy的",可知以s结尾的复数名词的所有格省略后面的s,twins名词所有格是twins';结合题意,这两辆自行车是她俩各自拥有,所以分别都要加上所有格,故选A.35.(1分)﹣Did you watch the animal show yesterday?﹣No.We were to catch the last bus.()A.too early B.too late C.late enough D.early enough【解答】答案:B 考查连词词义辨析.根据句意应该是没有赶上车,too…to…意为太…而不能…,故选择B.36.(1分)There was a fire last night,but the firemen____ soon.()A.put down it B.put it up C.put out it D.put it out【解答】答案:D 根据昨晚发生了一场火灾,but但,表示语意的转折,结合选项,推测意思是但消防员很快就把它扑灭了.即put out扑灭,it是代词,指代前文的fire,要放在中间,即put it out,故选D.A放下,B张贴37.(1分)She is woman,but she is very healthy.()A.a 80﹣year﹣old B.80 years oldC.an 80﹣years﹣old D.an 80﹣year﹣old【解答】答案:D 根据woman,结合选项,这里缺少一个形容词作定语修饰妇女,故用数字+连字符+year+连字符+old,由于80是eight,是一个以元音音素开头的单词,这里表示泛指,故用an,故选D38.(1分)﹣Will you please for my dinner,Peter?﹣Sure!()A.spend B.pay C.cost D.take【解答】答案:B 根据for my dinner,结合选项,推测意思是皮特,你将付我的晚餐钱吗?主语是你,联想得到固定短语pay for付款,故选B付款.A花费,人做主语,C花费,物做主语,D花费,物做主语39.(1分)After stopping the car and drinking some water,Tom_______ feel sick________.()A.didn't,no more B.didn't,any moreC.did,any more D.not,any more【解答】答案:B.表示不再…用not…any more=no more,这里表达的是过去的动作故用一般过去时,借助于did构成否定,故答案是B.40.(1分)﹣﹣﹣Excuse me!You can't take photos here.Look at the sign.It says"NO PHOTOS".﹣﹣﹣Sorry,I _________it.()A.didn't see B.am going to seeC.won't see D.don't see【解答】答案:A.考查否定句.句意"﹣﹣劳驾了,这里不能拍照,看这个标志写着"禁止拍照".﹣﹣对不起,我没有看见它.".A一般过去时态的否定形式.B 一般将来时态的肯定形式.C一般将来时态的否定形式.D一般现在时态的否定形式.结合语境"对不起",可知应该是刚刚没看见,即在对方告诉他这里不能拍照之前不知道,因此用一般过去时态的否定形式,在实义动词see前用didn't,实义动词用原形see.答案是A.三、完形填空阅读短文,从每题所给选项中选出可以填入空白处的最佳选项.(15分)41.(15分)Mr.Evans lived in a city.He was a maths(41)B three years ago.He taught well and his students (42)A him.So he decided to work in the middle school all his life.But a terrible accident(可怕的事故)(43)D his life.One spring he took his class to(44)C an interesting place.The children saw a lot of(45)D things and had a good time there.But on their way to school,a truck(卡车)hit their(46)A because the young driver was drunk(酒驾).Five students(47)C and more than half the students were(48)B in the accident.He didn't know how it happened and was very(49)A it and after he came out of hospital,he left school and became a(50)B.He tried his best to stop the drivers from breaking the traffic laws(交通规则).He worked hard and was strict(要求严格)with the drivers.So they were afraid of him.One afternoon it was very hot.Mr.Evans was(51C.He was standing at the crossing and watching the traffic.Suddenly he saw a car(52)D the crossing.It ran so fast that it almost hit a man(53)A a bike.He stopped it at once and saw a girl in it."(54)C your license (执照)to me,Madam,"said Mr.Evans.The girl gave her bag to him and said,"Please look for it in the bag yourself.I can'tsee(55)C without glasses."41.A.worker B.teacher C.doctor D.farmer 42.A.liked B.wished C.helped D.hated 43.A.hit B.won C.lost D.changed 44.A.build B.break C.visit D.find 45.A.sad B.dangerous C.safe D.interesting 46.A.bus B.train C.car D.ship 47.A.left B.lived C.Died(死亡)D.fell 48.A.surprised B.hurt C.locked D.unusual 49.A.sad about B.afraid of C.interested in D.worriedabout 50.A.shopkeeper B.policeman C.cleaner D.driver 51.A.at home B.in the office C.at work D.at school 52.A.rushed B.to rush C.rush D.rushing 53.A.on B.in C.by D.with 54.A.Send B.Sell C.Show D.Lend 55.A.something B.nothing C.anything D.you.【解答】41.答案:B.考查名词.A工人.B老师.C医生.D农民.由后面taught 教,可知,是数学"老师",选B.42.答案:A.考查动词.A喜欢.B希望.C帮助.D恨.由前面He taught well 他教得很好.可知,应该是他的学生"喜欢"他,选A.43.答案:D.考查动词.A打击.B赢.C丢失.D改变.根据上句So he decided to work in the middle school all his life所以他决定在中学工作一辈子.but但是,表示转折,因此是可怕的事故"改变"他的生活.选D.44.答案:C.考查动词.A建造.B打破.C参观.D发现.由后面interesting place 有趣的地方.可知,应该是带他的学生"参观",选C.45.答案:D.考查形容词.A伤心的.B危险的.C安全的.D有趣的.由后面had a good time there在那里过得很愉快.可知,应是孩子们看了很多"有趣的"东西.选D.46.答案:A.考查名词.A公交车、巴士.B火车.C小汽车.D轮船.根据前面But on their way to school及a truck(卡车)hit their在他们去学校的路上,一辆卡车撞到了他们的…可知,应该是"巴士",选A.47.答案:C.考查动词.A离开.B居住.C死亡.D跌倒.根据第一段第二行terrible accident(可怕的事故).可知,应该是五名学生"死亡".选C.48.答案:B.考查形容词.A惊讶的.B受伤的.C不灵活的.D不常见的.根据后面in the accident在事故中,可知应是超过一半学生是"受伤的",选B.49.答案:A.考查搭配.A对…难过.B害怕…C对…感兴趣.D担心…根据上一句Five students died and more than half the students were hurt五名学生死亡,一半以上的学生受伤.可知,应该是对这件事非常"难过",选A.50.答案:B.考查名词.A店主.B警察.C保洁员.D司机.根据后面He tried his best to stop the drivers from breaking the traffic laws(交通规则)他竭力阻止司机违反交通法规.可知,是成为"警察",选B.51.答案:C.考查搭配.A在家.B在办公室.C在工作.D在学校.根据后面He was standing at the crossing and watching the traffic他站在十字路口,注视着车辆行驶.可知,是"在工作",选C.52.答案:D.考查搭配.A过去式.B不定式.C动词原形.D动名词.see sb doing sth看见某人正在做某事.因此用动名词rushing冲.选D.53.答案:A.考查搭配.A在…上.B在…里.C通过…D和…表示"骑自行车"可以是by like或on a bike.由a bike可知,用on,选A.54.答案:C.考查动词.A发送.B出售.C给…看.D借.根据上句your license (执照)to me你的驾照给我.可知,应该是"给我看"你的驾照.选C.55.答案:C.考查不定代词.A一些东西.B没有东西.C任何东西.D你.根据上句The girl gave her bag to him and said,"Please look for it in the bag yourself 女孩把包递给他,说:"请你自己在包里找",可知,没有眼镜我看不见任何东西.否定句用anything,选C.四、阅读理解阅读下列三篇短文,根据短文内容选择最佳答案.(30分)56.(10分)56.Sunshine Rock Band needs A.A.a violin playerB.a reporterC.a swimming coach(教练)D.a table tennis coach57.If you can swim very well and like children very much,you will be more interested in the C advertisement(广告)A.firstB.secondC.thirdD.fourth58.If you like writing,you can call C for a job.A.8472﹣9999B.8665﹣7868C.5561﹣8823D.5487﹣659859.Your classmate wants to learn table tennis,so you can advise(建议)her to call B.A.JoeB.Mr ZhangC.KarenD.Mike60.The above ads(广告)are probably(可能)from A.A.a newspaperB.a story bookC.a science bookD.a history book.【解答】答案:56.A细节理解题.根据表格一句子Violin Player Wanted (招聘)Are you a lover of music?Can you play the violin?小提琴手招聘.你是一个音乐爱好者吗?你会拉小提琴吗?可知阳光摇滚乐队需要一个小提琴手.故选A.57.C细节理解题.根据表格三句子Can you swim?Do you like children?Can you teach them to swim on Sundays?Come and join us你会游泳吗?你喜欢孩子吗?你能教他们星期天游泳吗?来加入我们.可知如果你游泳非常好,并且非常喜欢孩子,你就会对第三则广告感兴趣.故选C.58.C细节理解题.根据表格四句子Do you like to talk with people?Do you like to write stories?Would you like to work for a magazine?Then come and work as a reporter.Please call Karen at 5561﹣8823.你喜欢与人交谈吗?你喜欢写故事吗?你想为杂志社工作吗?作为一个记者,请拨打凯伦的电话5561﹣8823.可知如果你喜欢写作的话,你可以拨打电话5561﹣8823寻找一个工作.故选C.59.B细节理解题.根据表格二句子Do you like to play table tennis?Do you want to play it well?Mr Zhang is a good teacher.You can come here every Saturday afternoon from 2:30 to 5:30.你喜欢打乒乓球吗?你想玩好吗?Mr.Zhang是个好老师,你可以来这里,每星期六下午2:30到5:30.可知如果你有同学想学乒乓球,你可以建议他给张老师打电话.故选B.60.A细节理解题.根据这篇文章内容及其句子Violin Player Wanted (招聘);Hot Club;Swimmer Wanted;Summer Job;可知这篇文章介绍的是一些招聘广告和兴趣学习课程,我们可推断出,它可能来自于一份报纸.故选A.61.(10分)Jyoti Amge,an Indian(印度)girl,is the world's smallest woman.She is only 0.628metres tall.She is small,but her dream is great.On her 18th birthday in。
精品解析:江苏省兴化市顾庄学区三校2016-2017学年七年级下学期期末考试数学试题(解析版)
2017年春学期期末学业质量测试七年级数学试卷一、选择题(本大题共有6小题,每小题3分,共18分)1. 化简﹣b•b3•b4的正确结果是()A. ﹣b7B. b7C. -b8D. b8【答案】C【解析】同底数幂相乘,指数相加.解:-b×b3×b4=-b1+3+4=-b8.故选D.“点睛”本题考查同底数幂的乘法,属于基础题.2. 已知是关于x、y的方程4kx-3y=-1的一个解,则k的值为()A. 1B. -1C. 2D. -2【答案】A【解析】知道了方程的解,可以把这对数值代入方程,得到一个含有未知数k的一元一次方程,从而可以求出k的值.解:把代入方程kx-y=3,得:2k-1=3,解得k=2.故选A.“点睛”解题的关键是把方程的解代入原方程,使原方程转化为以系数k为未知数的方程,利用方程的解的定义可以求方程中其它字母的值.3. 不等式2x+1≥5的解集在数轴上表示正确的是 ( )A. B. C. D.【答案】D【解析】利用不等式的基本性质把不等式的解集解出来,然后根据解出的解集把正确的答案选出来.解:移项2x≥4,x≥2故选D.“点睛”本题考查了一元一次不等式的解法和在数轴上表示不等式的解集,注意:大于或等于时要用实心表示.4. 若多项式=,则a,b的值分别是()A. ,B. ,C. ,D. ,【答案】B【解析】根据多项式的乘法运算法则计算.解:(x+1)(x-3)=x2+ax+b= x2-3x+x-3= x2-2x -3,a=-2,b=-3故选D.“点睛”本题主要考查了单项式的乘法法则,熟练掌握运算法则是解题的关键.5. 下列命题中,为真命题的是()A. 如果-2x>-2,那么x>1B. 如果a2=b2,那么a3=b3C. 面积相等的三角形全等D. 如果a∥b,b∥c,那么a∥c【答案】D【解析】解:A项如果-2x>-2,那么x<1,故为假命题;B项当a与b的符号不同时,a2=b2时,a2≠b2,故为假命题;C项由于“面积相等的三角形全等”的逆否命题“不全等的三角形面积不相等”显然为假,故为假命题. D项平行于同一直线的两条直线平行,故为真命题,故选D.“点睛”本题考查的是命题的真假判断,正确的命题叫真命题,错误的命题叫假命题. 判断命题的真假关键是要熟悉课本中的性质定理.6. 如图,在△ABC中,P、Q分别是BC、AC上的点,作PR⊥AB,PS⊥AC,垂足分别为R、S,若AQ=PQ,PR =PS,则结论:①PA平分∠RPS;②AS=AR;③QP∥AR;④△BRP≌△CSP.其中正确的有()A. 4个B. 3个C. 2个D. 1个【答案】B(3)如图所示∵AQ=PR,∴∠1=∠APQ,∴∠PQS=∠1+∠APQ=2∠1,又∵PA平分∠BAC,∴∠BAC=2∠1,∴∠PQS=∠BAC,∴PQ∥AR;(4)∵PR⊥AB,PS⊥AC,∴∠BRP=∠CSP,∵PR=PS,∴△BRP不一定全等与△CSP(只具备一角一边的两三角形不一定全等).故选B.“点睛“本题考查了全等三角形的判定和性质;做题时利用了平行线的判定、等边对等角、三角形外角的性质,要熟练掌握这些知识并能灵活应用.二、填空题(本大题共有10小题,每小题3分,共30分)7. 生物学家发现了一种病毒的长度约为0.00000432毫米,数据0.00000432用科学记数法表示为__.【答案】4.32×10-6【解析】分析:绝对值小于1的正数也可以利用科学记数法表示,一般形式为a×,与较大数的科学记数法不同的是其所使用的是负指数幂,指数由原数左边起第一个不为零的数字前面的0的个数所决定.本题解析:将0.00000432用科学记数法表示为4.32× .学.科.网...故答案为:4.32×.点睛:本题考查了用科学计数法表示较小的数,一般形式为,其中,n为由原数左边起第一个不为零的数字前面的0的个数决定.8. 一个长方体的长、宽、高分别是3x-4,2x和x,它的体积等于______.【答案】6x3-8x2【解析】根据长方体的计算公式长×宽×高,列出算式,再进行计算即可.解:根据题意得:(3x-4)•2x•x=6x3-8x2;“点睛”此题考查了单项式乘多项式,解题的关键是根据长方体的体积公式列出算式,再根据单项式乘多项式的法则进行计算即可.9. 不等式组的解集是______.【答案】3≤x<6【解析】分别解两个不等式得到x≥3和x<6,利用大于小的小于大的取中间可确定不等式组的解集.解:解不等式①得x≥3,解不等式②得x<6,所以不等式组的解集为3≤x<6.10. 命题“如果a>b,那么ac>bc ” 的逆命题是______命题(填“真”或“假”).【答案】假【解析】逆命题就是题设和结论互换,本题的逆命题是若“ac>bc,则a>b,举反列判断真假.解:逆命题是若“ac>bc,则a>b,当c< 0时,结论不成立,故逆命题是假命题.“点睛”判断一个命题是真命题还是假命题,就是判断一个命题是否正确,即由条件能否得出结论.如果命题正确,就是真命题;如果命题不正确,就是假命题.11. 如图所示,AB=DB,∠ABD=∠CBE,请你添加一个适当的条件_____,使△ABC≌△DBE(只需添加一个即可,不添加辅助线).【答案】BE=BC或∠BDE=∠BAC或∠DEB=∠ACB【解析】∵∠ABD=∠CBE,∴∠ABD+∠ABE=∠CBE+∠ABE,即∠ABC=∠DBE,∵AB=DB,∴①用“角边角”,需添加∠BDE=∠BAC,②用“边角边”,需添加BE=BC,③用“角角边”,需添加∠ACB=∠DEB.12. 已知a+b=3,a b=2,则(a-b)2=______.【答案】1学.科.网...【解析】运用完全平方公式计算.解:∵a+b=3,ab=2,∴(a-b)2=a2+b2-2ab=a2+b2+2ab-4ab=(a+b)2-4ab,=(3)2-4×2=9-8=1.“点睛”利用完全平方公式化简,把a+b、ab的值代入求出(a-b)2的值即可.13. 如图,已知∠1=∠2=90°,AD=AE,那么图中有_____对全等三角形.【答案】3【解析】根据题意,结合图形,可得知△AEB≌△ADC,△BED≌△CDE,△BOD≌△COE.做题时要从已知条件开始结合图形利用全等的判定方法由易到难逐个寻找.解:①△AEB≌△ADC;∵AE=AD,∠1=∠2=90°,∠A=∠A,∴△AEC≌△ADC;∴AB=AC,∴BD=CE;②△BED≌△CDE;∵AD=AE,∴∠ADE=∠AED,∵∠ADC=∠AEB,∴∠CDE=∠BED,∴△BED≌△CDE.③∵BD=CE,∠DBO=∠ECO,∠BOD=∠COE,∴△BOD≌△COE.故答案为3.“点睛”本题重点考查了三角形全等的判定定理,普通两个三角形全等共有四个定理,即AAS、ASA、SAS、SSS,直角三角形可用HL定理,但AAA、SSA,无法证明三角形全等,本题是一道较为简单的题目.14. 某地准备对一段长120 m的河道进行清淤疏通.若甲工程队先用 4天单独完成其中一部分河道的疏通任务,则余下的任务由乙工程队单独完成需要9天;若甲工程队先单独工作8天,则余下的任务由乙工程队单独完成需要3天.设甲工程队平均每天疏通河道x m,乙工程队平均每天疏通河道y m,则的值为___.【答案】20【解析】试题分析:由题意列方程组,两式相加得,12x+12y=240,∴x+y=20.考点:1.二元一次方程组的应用;2.整体思想的应用.15. 已知关于的不等式组的整数解共有3个,则的取值范围是___.【答案】【解析】先分别求得两个不等式的解集,再根据求不等式组解集的口诀求解即可.解:由得,由得,∴不等式组的解集为.∵不等式组的整数解共有3个,即-2、-1、0∴a的取值范围是.“点睛”解题的关键是熟练掌握求不等式组解集的口诀:同大取大,同小取小,大小小大中间找,大大小小找不到(无解).16. 我国南宋数学家杨辉用三角形解释二项和的乘方规律,称之为“杨辉三角”,这个三角形给出了(a+b)n(n=1,2,3,4,……)的展开式的系数规律(按n的次数由大到小的顺序):请依据上述规律,写出(x-2)2017展开式中含x2016项的系数是______.【答案】- 4034.【解析】首先确定x2017是展开式中第几项,根据杨辉三角即可解决问题.解:(x﹣2)2017展开式中含x2016项的系数,根据杨辉三角,就是展开式中第二项的系数,即﹣2017×2=﹣4034.故答案为﹣4034.三、解答题(本大题共有10小题,共102分.解答时应写出必要的步骤)17. 计算:(1)(2)已知x2+x﹣5=0,求代数式(x﹣1)2﹣x(x﹣3)+(x+2)(x﹣2)的值.【答案】(1)2;(2)2【解析】(1)根据零指数幂、负整数指数幂、乘方运算分别进行计算即可得出答案.(2)先算乘法,再合并同类项,最后代入求出即可.解:(1)原式=1-++1=2;学.科.网...(2))原式=x2﹣2x+1﹣x2+3x+x2﹣4=x2+x﹣3,因为x2+x﹣5=0,所以x2+x=5,所以原式=5﹣3=2.“点睛”(1)此题主要考查了实数的运算,要熟练掌握,解答此题的关键是要明确:在进行实数运算时,和有理数运算一样,要从高级到低级,即先算乘方、开方,再算乘除,最后算加减,有括号的要先算括号里面的,同级运算要按照从左到有的顺序进行.另外,有理数的运算律在实数范围内仍然适用.同时还考查了零指数幂的运算,要熟练掌握,解答此题的关键是要明确:①a0=1(a≠0);②00≠1.(2)考查了整式的混合运算和求值的应用,能正确运用整式的运算法则进行化简是解此题的关键,难度适中.18. 因式分解:(1)2x3y-8xy;(2).【答案】(1)2xy(x+2)(x-2);(2)(x-2)2(x+ 2)2【解析】(1)应先提取公因式2xy,再对余下的多项式利用平方差公式继续分解;(2) 本题符合平方差公式的特征,运用平方差公式分解.解:(1)原式= 2xy(x2-4)=2xy(x+2)(x-2);(2)原式=(x2-4x+4)(x2+4x+4)=(x-2)2(x+ 2)2.“点睛”本题考查了提公因式法与公式法分解因式,要求灵活使用各种方法对多项式进行因式分解,一般来说,如果可以先提取公因式的要先提取公因式,再考虑运用公式法分解.19. 解不等式,把它的解集在数轴上表示出来,并求出这个不等式的负整数解.【答案】1.【解析】先解出不等式的解集,即可解答本题.解:去分母得:2(2x﹣1)-3(5x+1)≤6,去括号得:4x﹣2﹣15x﹣3≤6,移项得:4x﹣15x≤6+2+3,合并同类项得:﹣11x≤11,把x的系数化为1得:x≥﹣1.这个不等式的解集可表示如图:,其所有负整数解为-1“点睛”本题主要考查解一元一次不等式的基本能力,严格遵循解不等式的基本步骤是关键,尤其需要注意不等式两边都乘以或除以同一个负数不等号方向要改变.20. 如图,点D在AB上,点E在AC上,BE、CD相交于点O.(1)若∠A=50°,∠BOD=70°,∠C=30°,求∠B的度数;(2)试猜想∠BOC与∠A+∠B+∠C之间的关系,并证明你猜想的正确性.【答案】(1)30°;(2)∠BOC=∠A+∠B+∠C,理由见解析.学.科.网...【解析】(1)利用三角形外角和定理即可求得∠B的度数;(2)用三角形外角和定理求出∠BOC,∠BEC的两角之和,最后得出结论.解:(1)∵∠A=50°,∠C=30°,∴∠BDO=80°;∵∠BOD=70°,∴∠B=30°;(2)∠BOC=∠A+∠B+∠C.理由:∵∠BOC=∠BEC +∠C,∠BEC=∠A+∠B,∴∠BOC=∠A+∠B+∠C.21. 学校准备购进一批节能灯,已知1只A型节能灯和3只B型节能灯共需26元;3只A型节能灯和2只B 型节能灯共需29元.(1)求一只A型节能灯和一只B型节能灯的售价各是多少元;(2)学校准备购进这两种型号的节能灯共50只,并且A型节能灯的数量不多于B型节能灯数量的3倍,问A型节能灯最多可以买多少只?【答案】(1)一只A型节能灯的售价是5元,一只B型节能灯的售价是7元;(2)A型节能灯最多购进37只【解析】(1)设一只A型节能灯的售价是x元,一只B型节能灯的售价是y元,根据:“1只A型节能灯和3只B型节能灯共需26元;3只A型节能灯和2只B型节能灯共需29元”列方程组求解即可;(2)首先根据“A型节能灯的数量不多于B型节能灯数量的3倍”确定自变量的取值范围,然后得到有关总费用和A型灯的只数之间的关系得到函数解析式,确定函数的最值即可.解:(1)设一只A型节能灯的售价是元,一只B型节能灯的售价是元. 依题意得,解得.答:一只A型节能灯的售价是5元,一只B型节能灯的售价是7元;(2)设购进A型节能灯只,则购进B型节能灯(50-m)只,依题意有,解得. ∵m是正整数,∴m=37.答:A型节能灯最多购进37只.“点睛”此题主要考查了二元一次方程组的应用以及一元一次不等式的应用等知识,根据题意得出正确的等量关系是解题关键.22. 如图,△ABC中,AB=AC,AD⊥BC,CE⊥AB,AE=CE.求证:(1)△AEF≌△CEB;(2)AF=2CD.【答案】(1)证明见解析;(2)证明见解析.【解析】试题分析:(1)由AD⊥BC,CE⊥AB,易得∠AFE=∠B,利用全等三角形的判定得△AEF≌△CEB;(2)由全等三角形的性质得AF=BC,由等腰三角形的性质“三线合一”得BC=2CD,等量代换得出结论.试题解析:(1)∵AD⊥BC,CE⊥AB,∴∠BCE+∠CFD=90°,∠BCE+∠B=90°,∴∠CFD=∠B,∵∠CFD=∠AFE,∴∠AFE=∠B学.科.网...在△AEF与△CEB中,∠AFE=∠B,∠AEF=∠CEB,AE=CE,∴△AEF≌△CEB(AAS);(2)∵AB=AC,AD⊥BC,∴BC=2CD,∵△AEF≌△CEB,∴AF=BC,∴AF=2CD.考点:全等三角形的判定与性质;等腰三角形的性质.23. 已知关于x、y的方程组(1)求方程组的解(用含m的代数式表示);(2)若方程组的解满足条件x<0,且y<0,求m的取值范围.【答案】(1)(2)m<-8.【解析】(1)①×2+②得出5x=10m-5,求出x=2m-1,把x=2m-1代入②得出2m-1-2y=-17,求出y 即可;(2)根据已知和方程组的解得出不等式组,求出不等式组的解集即可.解:(1)①×2+②得:5x=10m-5,解得:x=2m-1,把x=2m-1代入②得:2m-1-2y=-17,解得:y=m+8,即方程组的解是;(2)根据题意,得,解得:m<-8,即m的取值范围是m<-8.“点睛”本题考查了二元一次方程组的解,解二元一次方程组,解一元一次不等式组的应用,解此题的关键是能根据题意得出一个关于a的一元一次不等式组.24. 如图,直线m与直线n互相垂直,垂足为O,A、B两点同时从点O出发,点A沿直线m向左运动,点B 沿直线n向上运动.(1)若∠BAO和∠ABO的平分线相交于点P,在点A、B的运动过程中,∠APB的大小是否会发生变化?若不发生变化,请求出其值;若发生变化,请说明理由;(2)若∠ABO的两个外角的平分线AQ、BQ相交于点Q,AP的延长线交QB的延长线于点C,在点A、B的运动过程中,∠Q和∠C的大小是否会发生变化?若不发生变化,请求出∠Q和∠C的度数;若发生变化,请说明理由.【答案】(1)不变化.理由见解析;(2)都不变.理由见解析【解析】(1)根据AP和BP分别是∠BAO和∠ABO的平分线即可求得∠APB的度数(2)由题中所给的条件利用邻补角的概念即可求出∠C的度数.解:(1)不变化.理由:∵AP和BP分别是∠BAO和∠ABO的平分线,∠AOB=90°,∴∠APB=180°(∠OAB+ABO)=180°×90°=135°;(2)都不变.理由:∵AQ和BQ分别是∠BAO的邻补角和∠ABO的邻补角的平分线,AP和BP分别是∠BAO和∠ABO的平分线,∴∠CAQ=∠QBP=90°,又∠APB=135°,∴∠Q=45°,∴∠C=45°.25. 观察下列关于自然数的等式:a1:32-12=8×1;学.科.网...a2:52-32=8×2;a3:72-52=8×3;……根据上述规律解决下列问题:(1)写出第a4个等式:___________;(2)写出你猜想的第a n个等式(用含n的式子表示),并验证其正确性;(3)对于正整数k,若a k,a k+1,a k+2为△ABC的三边,求k的取值范围.【答案】(1)92—72=8×4;(2)(2n+1)2-(2n-1)2=8n(n为正整数).验证见解析;(3)k>1且k为正整数. 【解析】通过对一些特殊式子进行整理、变形、观察、比较,归纳出一般规律.解:a4应为92—72=8×4;(2)规律:(2n+1)2-(2n-1)2=8n(n为正整数).验证:(2n+1)2-(2n-1)2=[(2n+1)+(2n-1)] [(2n+1)-(2n-1)] =4n×2=8n;由(2)可知,a k=8k,a k+1=8(k+1),a k+2=8(k+2),易知8k<8(k+1)<8(k+2),要使它们能构成一个三角形,则必须有8k+8(k+1)>8(k+2),解得k>1.所以k的取值范围是k>1且k为正整数.“点睛”此题主要考查了学生通过特例分析从而归纳总结出一般结论的能力.对于找规律的题目首先应找出哪些部分发生了变化,是按照什么规律变化的,通过分析找到各部分的变化规律后用一个统一的式子表示出来变化规律是此题目中的难点.26. 已知A=2 a -7,B=a2- 4a+3,C= a2 +6a-28,其中.(1)求证:B-A>0,并指出A与B的大小关系;(2)阅读对B因式分解的方法:解:B=a2- 4a+3=a2- 4a+4-1=(a-2)2-1=(a-2+1)(a-2-1)=(a-1)(a-3).请完成下面的两个问题:①仿照上述方法分解因式:x2- 4x-96;②指出A与C哪个大?并说明你的理由.【答案】(1)证明见解析,B>A;(2)①(x+8)(x-12);②当2<a<3时,A>C;当a=3时,A=C;当a>3时,A<C【解析】(1)计算B-A 后结论,从而判断A与B 的大小;同理计算C-A ,根据结果来比较A与C的大小;(2)阅读对B因式分解的方法对所给的式子进行因式分解即可.解:(1)B-A= a2- 4a+3-2 a+7= a2- 6a+10=(a-3)2+1>0,B>A;(2)①x2- 4x-96=x2- 4x+4-100=(x-2)2-102=(x-2+10)(x-2-10)=(x+8)(x-12);②C-A=a2+6a-28-2a+7=a2+4a-21=(a+7)(a-3).因为a>2,所以a+7>0,从而当2<a<3时,A>C;当a=3时,A=C;当a>3时,A<C.“点睛”本题考查了整式的减法、平方差公式分解因式,渗透了求差比较大小的思路即分类讨论的思想.学.科.网...。
兴化市统考2016秋学期末七年级英语试卷
2016年秋学期期末学业质量测试七年级英语试卷(考试用时:120分钟满分:150分)第一部分选择题(共85分)一、听力(共20小题,每小题1分,计20分.)第一部分听对话回答问题本部分共10小题,每题你将听到一段对话,每段对话听两遍。
(10分)( )1. How does the boy usually go to school?A. B. C.( )2. What is Mr Green?A. B. C( )3. What does the boy often do after class?A. B. C.( )4. What does the man like best?A. B. C.( )5. Whose is this ball?A. Amy’s.B. Mine.lie’s.( )6 How often does the boy go to the hill?A. Once a week.B. Once a month.C. Every day.( )7. How does Kitty go to school?A. By bus.B. On foot.C. By bike.( )8. How many students are there in the girl’s class?A. Sixty-three.B. Thirty-one.C. Thirty-two.( )9.When does Sandy often do her homework?A.At 6:30.B. At 7:00C. At 9:00.( )10. Where is Peter?A. At school.B. At home.C. In a restaurant第二部分听对话和独白回答问题(计10分,每小题1分)你将听到一段对话和两段独白,听两遍。
听一段对话,回答11—12小题。
( )11. What does the man want to buy?A. A skirt.B. A shirt.C. A sweater.( )12. What colour does the man NOT like?A. Yellow.B. Black.C. White.( )13. A. a fish B. some meat C. some beef( )14. A. Lucy’s hat B. Lucy’s pocket C. Lucy’s bag( )15. A. A sheep B. A dog C. A cat听第二段独白,回答16-20小题( )16. Where does Alice live ?A. In Shanghai.B. In Tianjin.C. In Chongqing. ( )17. What does Alice teach?A. Math.B. Chinese.C. English.( )18. What is Alice like?A. Tall.B. Friendly.C. Beautiful.( )19. Where does Alice have supper?A. In the restaurant.B. In the school.C. At home.( )20. How does Alice feel every day?A. Tired.B.Happy.C. Angry.二、单项选择从下列每题所给的选项中,选择一个最佳答案。
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2016-2017学年度第二学期学业质量抽测七年级英语试卷注意:1. 本试卷共8页,满分为150分,考试时间为120分钟。
2. 答题前,考生务必将本人的学校、班级、姓名、学号填写在答题纸相应的位置上。
3. 考生答题必须用0.5毫米黑色墨水签字笔,写在答题纸指定位置处,答在试卷、草稿纸等其他位置上一律无效。
第一部分选择题(共85分)一、听力(共20小题,每小题1分,计20分.)第一部分听对话回答问题本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍。
(10分)( )1.What animals are they talking about?A. B. C.( )2. Which sport does the boy like best?A. B. C.( )3.How does the boy’s father go to work?A B C.( ).4. Which city does Kate like to go to?A.B. C.( )5. What does Simon want to do?A. To wash the cage.B. To feed the parrot.C. To do nothing.( )6. What is Mary doing now?A. Speaking English.B. Writing a letter to her friend.C. Practicing basketball.( )7. How often does Amy take her dog for a walk?A. Once a day.B. Twice a day.C. Three times a day.( )8. Why are the workers having a rest?A. Because they are too dirty.B. Be cause it’s too late.C. Because they’re too tired. ( )9. Which subject is Helen’s favorite?A. Geography. B Computer Studies. C. Maths.( )10. What day is it tomorrow?A. It is Sunday.B. It is Saturday.C. It is Friday.第二部分听对话和独白回答问题(计10分,每小题1分)你将听到一段对话和两段独白,听两遍。
听一段对话,回答11—12小题。
( )11. John has to first.A. help his mother with houseworkB. finish his homeworkC. see a film( )12. He may go to the cinema with his friend .A. todayB. tomorrowC. the day after tomorrow 听第一段独白,回答第13—15小题。
请根据短文内容,选择正确答案,完成信息记录表。
DifferencesMost students go to school by school bus.EnglandSome students walk or go to school by 13 .Students go to school by bus, bike or car.ChinaIf they get up 14 , they will take a taxi.15 students take their parents’ cars to school. Most students take theirAmericaschool bus or ride their bikes.( )13. A. bus B. car C. bike( )14. A. early B. late C. slowly( )15. A. Few B. A few C. Many听第二段独白,回答16-20小题( )16. What does Li Ming want to know when he goes to England?A. The people’s names.B.The people’s ages.C. Something about English people. ( )17. Who did Li Ming see in the street?A. A boy.B. A girl.C. A woman.( )18. Was the girl polite at first?A. Yes, she was.B. No, she wasn’t.C. We’re not sure.( )19. Why did the girl become angry?A. Because Li Ming wanted to know her name.B. Because Li Ming wanted to know her age.C. Because Li Ming wanted to know how to get to the shop.( )20. What did Li Ming say at last?A. We are in China, not in England.B. We are in England, not in China.C. We are in the street, not at home.二、单项选择从下列每题所给的选项中,选择一个最佳答案。
(20分)( ) 1. —Look. Is it _______ UFO? —No, it’s just _______ kite with light.A. an; theB. the; aC. a; aD. an; a( ) 2.The Belt and Road Forum for International Cooperation(一带一路国际合作高峰论坛)began _________ the morning of May14, 2017 _______ Beijing , China.A. in; inB. on; inC. on; onD. in; on ( ) 3. They were very___________ to see so many___________ things.A. amazing, amazedB. amazed, amazedC. amazed, amazingD. amazing, amazing( ) 4.The moonlight is shining in _____ the window. Everything in the room looks so nice.A. overB. acrossC. throughD. past( ) 5. Do you know what_____________ Zhang Lei yesterday?A. happenedB. happened toC.happens toD.will happen to ( ) 6. There’s milk in the fridge. Let’s go to buy some .A. a littleB. littleC. a fewD. few( ) 7. He_____ down the hole and ________ very sad.A. fell,feelsB. felt, fellC. fell, feltD. felt, felt ( ) 8. —When were you in Nanjing?—____________________.A. This coming JuneB. One month agoC. TomorrowD.Next week ( ) 9. —Could you tell me ____________ in today’s newspaper?—Sorry, _______________.A. something special; special nothingB. special something; special nothingC. something special; nothing specialD. anything special; something special ( ) 10. heavy smoke it is ! The house must be on fire .A. WhatB. HowC. What aD. How a( ) 11. !It’s dangerous over there.A. Look overB. Look atC. Look outD. Look up( ) 12. Simon likes _______the goldfish _______ around.A. looking; swimmingB. watch ing; swimC. to see; to swimD. looking at; to swim( ) 13.-How do you say “3,698” in English?-__________________.A.Three thousand, six hundred ninety-eightB.Three thousands, six hundreds and ninety-eightC.Three thousand, six hundred and ninety-eightD.Three thousand, six hundred and ninety eight( ) 14. These two bicycles are the . They are .A.twins’; Lucy’s and Lily’sB.twin’s ; Lucy’s and Lily’sC. Twins; Lucy and Lily’sD.twins’; Lucy and Lily’s( ) 15. — Did you watch the animal show yesterday?— No. We were to catch the last bus.A. too earlyB. too lateC. late enoughD. early enough( ) 16.There was a fire last night, but the firemen____ soon.A. put down itB. put it upC. put out itD. put it out( ) 17. She is woman ,but she is very healthy.A. a 80-year-oldB. 80 years oldC. an 80-years-oldD. an 80-year-old( ) 18 —Will you please for my dinner,Peter?—Sure!A. spendB. payC. costD. take( )19.After stopping the car and drinking some water, Tom_______ feel sick________.A. didn’t, no moreB. didn’t, any moreC. did, any moreD.not, any more( )20.---Excuse me!You can’t take photos here.Look at the sign.It says“NO PHOTOS”.---Sorry,I __________________it.A.didn’t seeB.am going to seeC.won’t seeD.don’t:see三、完形填空阅读短文,从每题所给选项中选出可以填入空白处的最佳选项。