Unit 2 what Should I do?
一、词汇(14分)
A)按括号所给单词的适当形式填空。
1. The shoes are _______(新颖的).
2. The lights in the evening are_______(color).
3. This is a friendly school.I feel really_______(comfort) here.
4. The people in Iraq keep fighting for their own ________ (free).
5. Why are you always _____(argue)with your mother?She must be very sad.
6. I don’t know what_________(say) when I am in front of many people.
7. This sweater ______(fit) me so well.I’ll buy it.
8. All the students laugh at me because my clothes are out of s_________.(时髦的). B)用适当的介词填空。
1.I borrow some money _____ my friend.
2.Did you ger a ticket ____the movie?
3.Everyone in my family goes to the park _____me because I’m ill.
4.The shop doesn’t open _____nine o’clock.
5.You can ask your parents______money.
6.Most students are _______ pressure.They need more time and freedom to do their own things.
二、句型转换(6分)
1.People will have robots in their homes.(改为一般疑问句)
_____ people ______ robots in their homes?
2. English names are different from Chinese names.(改为同义句)
English names ____________the ______________as Chinese names.
3. Please telephone her tomorrow morning.(改为同义句)
Please _____ _____ _____ tomorrow morning.
4. English is the most popular of all. (同义句)
English is _____________ popular than _____ subject.
5. He got up after his mother came back. (同义句)
He____________ get up_____________ his mother ____________.
6.It seems that Kate has supper at home(改为同义句)
Kate _____ _____ have supper at home.
三、选择题(30分)
( ) 1. —What’s wrong with you? —_________________.
A. I’ve got a headache
B. She’ll take some medicine.
C. She’s got a headache
D. Thank you.
( ) 2. It ________ her four hours_________ the work yesterday.
A. takes, finish
B. take, finishing
C. took, finished
D. took, to finish ( ) 3.Do you know any other foreign language ________ English?
A. except
B. but
C. besides
D. beside
( ) 4. Mary was disappointed when she found out they had gone to the cinema_____ her.
A. except
B. besides
C. for
D. without
( ) 5. I’m afraid I’ll have to _________ the lost book.
A. pay for
B. paid for
C. pay of
D. paid on ( ) 6. Could you_________ when the planes arrives?
A.tell
B. look for
C. finds out
D. find out ( )7. Anna did’t go to the movie.Dennis didn’t go to the movie,______.
A. either
B. too
C. also
D. so
( )8. Would you please turn your radio down a little? It’s so ______.
A. easy
B. loud
C. difficult
D. Interesting
( )9. Her mother looks ______ younger than mine.
A. more
B. too
C. very
D. Much
( )10. Yor need to change your clothes every week. Don’t always _____ the same clothes.
A. wear
B. put on
C. dress
D. have
( )11. Don’t forger to _____ me ____ when you get to Beijing.
A. cut;up
B. call; up
C. take;up
D. mix;up
( )12. —Why did Maria look so _____?
—Because her mother was ill.
A. happy
B. relaxed
C. lonely
D. Upset
( )13. He didn’t do his homework ______ his father came back.
A. while
B. as soon as
C. if
D. Until
( )14.The mother was ______ to see the present that her ten_year_old son bought for her birthday.
A. surprise
B. surprised
C. surprising
D. surprisedly
( )15. How about ______ to the cinema on Sunday?
A. go
B. to go
C. going
D. will go
四、阅读理解(30分)
A
Mr. Gao lives in a town. When he was twenty-five, his son was born. He calls him Gao Ling. The little boy is clever. He and his wife love him very much. It’s September 1st today. A new school year begins. Gao Ling is happy and wears his most beautiful clothes. He’s going to school with his new bag. “Let me take you to school, dear.” said Mrs. G ao. “Thank you, Mummy,” said the boy. “The school is not far from here. I can go there myself.”
At school a teacher met the little boy and asked, “What’s your name, my little friend?” “G ao Ling, sir.”answered the boy. “How old are you?”“Six, sir.”“What’s your father’s name?”“Gao Daling, sir.”“How old is he?”“He is six, too, sir.”“Oh,” the teacher said in surprise. “Is he as old as you?”
“Yes, sir,” said the boy. “He became a father only on the day when I was born.”( ) 1. Mr. Gao is _____now.
A. six
B. twenty-five
C. thirty one
D. thirty-five
( ) 2. Mr. and Mrs. Gao love their son because_____.
A. the boy is clever
B. he likes to go to school
C. he can go to school himself
D. he can answer their question
( ) 3. Gao Ling didn’t let his mother take him to school because_____.
A. she was too busy
B. his friends could took him
C. the policeman could help him
D. the school is near and he could take care of himself
( ) 4. Gao Ling went to school_____.
A. by car
B. on foot
C. by train
D. by bike
( ) 5. Gao Ling thought_____.
A. his father and he were born on the same day
B. his father was younger than him
C. his father forgot to tell him about his age
D. Gao Daling became a father only for six years
B
The car was invented (发明) just a century ago. You may know all kinds of cars’ names, but many people don’t know who was the inventor of the first car. The first car was invented not by a German, but by an American. His name was Henry Ford. Henry was born in a poor family. He was the eldest of six children. When he was a boy, he became interested in mending watches and machines. When he was twelve years old, his mother died. Soon he had to work in a machine shop for two dollars and fifty cents a week. In the evenings he repaired watches for another dollar a week. The hard life made him strong and able.
At that time there was another interest in the life of the young ford. He dreamed(梦想) to make a machine. It could run without a horse, so named “horseless carriage.” He over-came(克服) a lot of difficulties and in April 1893, the “horseless carriage” was finally finished. It was the first car.
Later Henry Ford founded the Ford Motor Company(福特汽车公司). He was really the first inventor of the car in the world.
( ) 6. Who really invented the car first? _____.
A. A German
B. An American
C. Frenchman
D. Japanese
( ) 7. From this story we can know the car was invented_____.
A. more than 100 years ago
B. less than 100 years ago
C. just 100 years ago
D. 50 years ago
( ) 8. Henry Ford must have_____.
A. five brothers and sisters
B. six brothers and sisters
C. five younger brothers
D. three brothers
( ) 9. How many dollars did young Ford earn(挣) every week? _____.
A. 2.5 dollars
B. 3.5 dollars
C. 3 dollars
D. 4 dollars ( ) 10. Which is not true? _____.
A. He repaired watches in the evenings for fun
B. He enjoyed repairing watches and machines when he was very young.
C. He met with a lot of difficulties in the invention.
D. The first car was invented in 1893.
五、书面表达(20分)
你的好友来信了,读一读,看看她有什么烦心事,你能帮他吗?请你给他回一封50—80 词的信。
Dear friend,
I feel bored every day. My math is so bad that every time I am the last one in our class.My classmates don’t like to talk and play with me. I feel lonely.I don’t know What I can do to be better.Can you help me ? Peter
八年级下学期数学测试卷 一、选择题: 1.如果代数式有意义,那么x的取值范围是() A.x≥0 B.x≠1 C.x>0 D.x≥0且x≠1 2. 下列各组数中,以a、b、c为边的三角形不是直角三角形的是() A 1.5,2,3 a b c === B 7,24,25 a b c === C 6,8,10 a b c === D 3,4,5 a b c === 3.如图,直线l上有三个正方形a b c ,,,若a c ,的面积分别为5和11,则b的面积为() A.4 B.6 C.16 D.55 4. 如图,在平行四边形ABCD中,下列结论中错误的是() A.∠1=∠2B.∠BAD=∠BCD C.A B=CD D.A C⊥BD 5. 如图,在平行四边形ABCD中,对角线AC,BD相交于点O,点E,F分别是边AD,AB的中点,EF交AC于点H ,则的值为() A.1B.C.D.6.0) y kx b k =+≠ (的图象如图所示,当0 y>时,x的取值范围是 () A.0 x< B.0 x> C.2 x< D.2 x> 7. 体育课上,20人一组进行足球比赛,每人射点球5次,已知某一组的进球总数为49个,进球情况记录如下表,其中进2个球的有x人,进3个球的有y人, 进球数0 1 2 3 4 5 人数 1 5 x y 3 2 A.y=x+9与y= 3 x+ 3 B.y=-x+9与y= 3 x+ 3 C.y=-x+9与y=- 2 3 x+ 22 3 D.y=x+9与y=- 2 3 x+ 22 3 8. 已知一次函数y=kx+b(k、b为常数且k≠0)的图象经过点A(0,﹣2)和点B(1,0),则k=,b= 9.已知:ΔABC中,AB=4,AC=3,BC=7,则ΔABC的面积是( ) A.6 B.5 C.1.57 D.27 10. 如图,已知一条直线经过点A(0,2)、点B(1,0),将这条直线向左平移与x轴、y 轴分别交与点C、点D.若DB=DC,则直线CD的函数解析式为. a b c
八年级(下)期末数学试卷 一、选择题(本题有10小题,每小题3分,满分30分) 1.下列二次根式中,是最简二次根式的是() A. B.C.D. A.94 B.96 C.113 D.113.5 3.在一个直角三角形中,已知两直角边分别为6cm,8cm,则下列结论不正确的是() A.斜边长为10cm B.周长为25cm C.面积为24cm2D.斜边上的中线长为5cm 4.如图,?ABCD中,对角线AC,BD相交于点O,OA=3,若要使平行四边形ABCD为矩形,则OB的长度为() A.4 B.3 C.2 D.1 x与方差S2: 平均数 ) A.甲B.乙C.丙D.丁 6.下列各命题的逆命题成立的是() A.全等三角形的对应角相等 B.如果两个数相等,那么它们的绝对值相等 C.对角线互相平分的四边形是平行四边形 D.如果两个角都是90°,那么这两个角相等 7.已知直线y=kx+b与y=2x﹣5平行且经过点(1,3),则y=kx+b的表达式是() A.y=x+2 B.y=2x+1 C.y=2x+2 D.y=2x+3 8.已知正比例函数y=kx,且y随x的增大而减少,则直线y=2x+k的图象是() A. B. C. D. 9.如图,?ABCD中,AB=4,BC=3,∠DCB=30°,动点E从B点出发,沿B﹣C﹣D﹣A运动至A 点停止,设运动的路程为x,△ABE的面积为y,则y与x的函数图象用图象表示正确的是()
A . B . C . D . 10.在平面直角坐标系中,点A (0,4),B (3,0),且四边形ABCD 为正方形,若直线l :y=kx +4与线段BC 有交点,则k 的取值范围是( ) A .k ≤ B .﹣≤k ≤﹣ C .﹣≤k ≤﹣1 D .﹣≤k ≤ 二、填空题(共6小题,每小题3分,满分18分) 11.化简: = . 12.如图,?ABCD 中,∠DCE=70°,则∠A= . 13.如果菱形有一个内角是60°,周长为32,那么较短对角线长是 . 14.如图,?ABCD 的对角线AC 与BD 相交于点O ,E 为BC 边中点,已知AB=6cm ,则OE 的长为 cm . 15.直线l 1:y=x +1与直线l 2:y=mx +n 相交于点P (a ,2),则关于x 的不等式x +1≥mx +n 的解集为 . 16.如图,在矩形ABCD 中的AB 边长为6,BC 边长为9,E 为BC 上一点,且CE=2BE ,将△ABE 翻折得到△AFE ,延长EF 交AD 边于点M ,则线段DM 的长度为 .
) 人教版八年级下册数学学科期末试题 (时间:90分钟 满分:120分) 亲爱的同学们,这份试卷将再次记录你的自信、沉着、智慧和收获. 请认真审题,看清要求,题 号 一 二 } 三 四 五 总 分 核卷人 得 分 得分 评卷人 % 一、选择题(每小题3分,共30分) $ 1、一件工作,甲独做a 小时完成, 乙独做b 小时完成,则甲、乙两人合作完成需要( )小时。 A 、11a b + B 、1ab C 、1a b + D 、ab a b + 2、在三边分别为下列长度的三角形中,哪些不是直角三角形( ) A 、5,13,12 B 、2,3, C 、4,7,5 D 、1, 3、在下列性质中,平行四边形不一定具有的是( ) A 、对边相等 B 、对边平行 C 、对角互补 D 、内角和为360° 4、能判定四边形是平行四边形的条件是( ) A 、一组对边平行,另一组对边相等 B 、一组对边相等,一组邻角相等 \ C 、一组对边平行,一组邻角相等 D 、一组对边平行,一组对角相等 5、反比例函数y=-x k 2 (k ≠0)的图像的两个分支分别位于( ) A 、第一、三象限 B 第一、二象限 C 第二、四象限 D 第一、四象限 6、某煤厂原计划x 天生产120吨煤,由于采用新的技术,每天增加生产3吨,因此提前2天完 题号 1 2 & 3 4 5 6 7 8 9 10 ¥ 答案 】
成任务,列出方程为( ) A 31202120-=-x x B 32120120-+=x x C 31202120-=+x x D 32 120120--=x x 7、函数y = x k 1 与y =k 2x 图像的交点是(-2,5),则它们的另一个交点是( ) A (2,-5) B (5,-2) C (-2,-5) D (2,5) \ 8、在函数y= x k (k<0)的图像上有A(1,y 1)、B(-1,y 2)、C(-2,y 3)三个点,则下列各式中正确的是( ) A y 1 A D B C 八年级数学试卷(一)(第十一章:三角形) 一、选择题(本大题共10题,每小题3分,共30分) 1、以下列各组线段为边,能组成三角形的是( ) A .3cm ,4cm ,5cm B .4cm ,6cm ,10cm C .1cm ,1cm ,3cm D .3cm ,4cm ,9cm 2、等腰三角形的一边长等于4,一边长等于9,则它的周长是( ) A .17 B .13 C .17或22 D .22 3、一个三角形的两边分别为3和8,第三边长是一个偶数,则第三边的长不能为( ) A 、6 B 、8 C 、10 D 、12 4、在下图中,正确画出AC 边上高的是( ). A B C D 5、如图,线段AD 把△ABC 分为面积相等的两部分,则线段AD 是( ). A 、三角形的角平分线 B 、三角形的中线 C 、三角形的高 D 、以上都不对 6、适合条件C B A ∠= ∠=∠2 1 的三角形是( ) A 、锐角三角形 B 、等边三角形 C 、钝角三角形 D 、直角三角形 7、过多边形的一个顶点的所有对角线把多边形分成8个三角形,这个多边形的边数是( ) A 、8 B 、9 C 、10 D 、11 8、若一个多边形的内角和等于1080°,则这个多边形的边数是( ) .8 C 9、n 边形的每个外角都为24°,则边数n 为( ) A 、13 B 、14 C 、15 D 、16 10、如图所示,已知△ABC 为直角三角形,∠B=90°,若沿图中虚线剪去∠B ,则∠1+∠2 等于( ) A 、90° B 、135° C 、270° D 、315° 11、 如图所示,在△ABC 中,CD 、BE 分别是AB 、AC 边上的高,并且CD 、BE 交于,点P ,若∠A=500 ,则 ∠BPC 等于( ) A 、90° B 、130° C 、270° D 、315° D F A E C B 八年级下册数学综合测试卷 一、选择题:(本大题共8题,每小题3分,共30分) 1、若分式1 ||-X X 无意义,则X 的值是:( ) A .0 B .1 C .-1 D .±1 2、一次函数y=kx+b 与反比例函数x k y = 的图像如图1所示, 则下列说法正确的是:( ) A .它们的函数值y 随x 的增大而增大; B .它们的函数值y 随x 的增大而减小; C .k<0 D .它们的自变量x 的取值为全体实数。 3、在四边形ABCD 中,∠B= 90 , ∠A: ∠D: ∠C=1:2:3,则∠C 为 ( ) A 、 160 B 、 135 C 、 90 D 、 45 4、已知三角形两边长为2和6,要使这个三角形为直角三角形,则第三边的长为:( ) A . 2 B .102 C .10224或 D .以上都不对 5、如图2所示,在平面直角坐标系中,菱形ABCD 的顶点A 、B 的坐标分别 是(0, 0),(2, 0),∠α=60°,则顶点C 在第一象限的坐标是:( ) A .(2, 2), B .(3, 3), C .(3, 2), D .(13+, 3 ), 6、一块蓄电池的电压(u )为定值,使用此蓄电池为电源时,电流I(A)与电阻R(Ω)之间的函数关系如图3所示, 如果以此蓄电池为电源的用电器限制电流不得超过10A ,那么此用电器的可变电阻应(注R u I =):( ) A .不小于4.8Ω B .不大于4.8Ω C .不小于14Ω D .不大于14Ω 7、当25--k k 与k k 1 +互为相反数时,k 等于:( ) A .56 B .65 C .23 D .3 2 8、已知Rt △ABC 中,∠C=90°,若a+b=14cm ,c=10cm ,则Rt △ABC 的面积是:( ) A .24cm 2 B .36cm 2 C .48cm 2 D .60cm 2 9、已知菱形ABCD 的周长为40cm ,两条对角线BD :AC=3:4,则两条对角线BD 和AC 的长分别是 ( ) A 、24cm 32cm B 、12cm 16cm C 、6cm 8cm D 、3cm 4cm 10、 如图,O 为正方形ABCD 的中心,BE 平分∠DBC ,交DC 于点E ,延长BC 到点F ,使CF=CE ,连接DF ,交BE 的延长线于点G ,连接OG 、OC ,OC 交BG 于点H .下面四个结论:①△BCE ≌△DCF ;②OG ∥AD ;③BG ⊥DF ;④BH=GH . 其中正确结论有 ( ) (A )1个 (B) 2个 (C)3个 (D)4个 二、填空题:(每小题3分,共30分) 11、若4x-3=1,则x=_____________________。 12、已知()2 4-x +)4)(3(--y y =0,且x 、y 是一个直角三角形的两边,则这个直角三角形第三边的长 为 . 13、如图4所示,在等腰梯形ABCD 中,AC ⊥BD ,AC=6cm ,则等腰梯形ABCD 的 面积为________________cm 。 14、a,b 为实数,且ab=1,设1 1 11,11++ +=+++= b a Q b b a a P , 则P__________Q (填“>”,“<”,“=”) 15、已知反比例函数x k y 42+=的图像在第一、三象限,反比例函数x k y 3 -=,在x >0时,y 随x 的增大而大,则k 的取值范围是_________________________。 16、一个四边形的边长依次为a,b,c,d ,且a 2+b 2+c 2+d 2=2ac+2bd 则这个四边形是___________________________。 17、如图5所示,点P 是正方形ABCD 的对角线BD 上一点, PE ⊥BC 于E ,PF ⊥CD 于F ,连接EF ,给出下列四个结论: ① AP=EF ;②△APD 一定是等腰三角形;③∠PFE =∠BAP ; ④PD=2EC ,其中正确结论的序号是______________________。 18、在△ABC 中,∠C =90°,动点P 从C 点出发沿C →A →B 的 路线以每秒2cm 的速度运动到点B ,则点P 出发___________秒时, △BCP 的面积是△ABC 的面积的一半。 19、某项工程,甲乙两队合做6天可以完成,若甲单独做需x 天完成,乙独做比甲独做多用4天,要求出x 的值,可列出只含x 的方程来解,则列出的方程是 。 20、已知关于x 的方程 12 -x a x —=+的根大于零,则a 的取值范围是 。 三、(本大题9小题,共90分) 21、计算:(1)3234x y y x ? (2)解分式方程: 11322x x x -+=--; 22已知点P (2,2)在反比例函数y= x k (k ≠0)的图象上。 (1)当x=-3 时,求y 的值。 (2)当1<x <3时,求y 的取值范围 y x o 图1 y x C D (A) B O α I(A) R(Ω) O 8 6 A D C B 图4 A B C D P E F 图5 图2 八年级习题练习 四、证明题:(每个5分,共10分) 1、在平行四边形ABCD 中,AE ⊥BC 于E ,CF ⊥AD 于F ,求证:BE = DF 。 2、在平行四边形DECF 中,B 是CE 延长线上一点,A 是CF 延长线上一点,连结AB 恰过点D ,求证:AD ·BE =DB ·EC 五、综合题(本题10分) 3.如图,直线y=x+b (b ≠0)交坐标轴于A 、B 两点,交双曲线y=x 2 于点D , 过D 作两坐标轴的垂线DC 、DE ,连接OD . (1)求证:AD 平分∠CDE ; (2)对任意的实数b (b ≠0),求证AD ·BD 为定值; (3)是否存在直线AB ,使得四边形OBCD 为平行四边形?若存在,求出直线的解析式;若不存在,请说明理由. A B C E O D x y F E D C B A F E D C B A 4. 如图,四边形ABCD 中,AB=2,CD=1 ,∠A=60度,∠D=∠B=90度,求四边形ABCD 的面积S 5.如图,梯形ABCD 中,AD//BC,AB=DC. 如果P 是BC 上任意一点(中点除外),PE//AB ,PF//DC ,那么AB=PE+PF 成立吗?如果成立,请证明,如果不成立,说明理由。 参考答案 证明题 1、证△ABE ≌△CDF ; 2、 ??? ?∠=∠?∠=∠?A BDE AC DE B ADF BC DF △ADF ∽△DBE BE DF DB AD =? 综合题 1.(1)证:由y=x +b 得 A (b ,0),B (0,-b ). ∴∠DAC=∠OAB=45 o 又DC ⊥x 轴,DE ⊥y 轴 ∴∠ACD=∠CDE=90o ∴∠ADC=45o 即AD 平分∠CDE. 八年级数学下学期末复习综合测试题(二) 一、选择题:(每小题3分,共30分) 1.在相同时刻物高与影长成比例,如果高为1米的测竿的影长为80厘米,那么影长为9.6米的旗杆的高为( ) (A)15米 (B)13米 (C)12米 (D)10米 2.商品的原售价为m 元,若按该价的8折出售,仍获利n%,则该商品的进价为( )元. (A)0.8m ×n% (B)0.8m (1+n%) (C) %18.0n m + (D)% 8.0n m 3.人数相等的八(1)和八(2)两个班学生进行了一次数学测试,班级平均分和方差如下:2212128686259186.x x s s ====,,, 则成绩较为稳定的班级是( ) (A)八(1)班 (B)八(2)班 (C)两个班成绩一样稳定 (D)无法确定. 4.下列命题是真命题的是( ) (A)相等的角是对顶角 (B)两直线被第三条直线所截,内错角相等 (C)若n m n m ==则,22 (D) 5.若16)3(22 +-+x m x 是完全平方式,则m 的值是( (A)-1 (B)7 (C)7或-1 (D)5或1. 6.下列长度的各组线段中,能构成比例的是( ) (A)2,5,6,8 (B)3,6,9,18 (C)1,2,3,4 (D)3,6,7,9. 7.如图,1l 反映的是某公司产品的销售收入与销售量的关系,2l 反映的该公司产品的销售成本与销售量的关系,根据图象判断该公司盈利时销售量为 ( ) (A)小于4件 (B)等于4件 (C)大于4件 (D)大于或等于4件 8.解关于x 的方程 1 13-=--x m x x 产生增根,则常数m 的值等于 ( ) (A)-1 (B)-2 (C)1 (D)2 9.有旅客m 人,如果每n 个人住一间客房,还有一个人无房间住,则客房的间数为( ) (A) n m 1- (B)n m 1+ (C)n m -1 (D)n m +1 10.若m >-1,则多项式12 3 +--m m m 的值为 ( ) (A)正数 (B)负数 (C)非负数 (D)非正数人教版八年级上册数学综合测试题
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