12月考试卷
七年级英语试卷及答案
七年级英语12月考试卷(满分120分时间100分钟)第一部分听力(25分)Ⅰ.听句子,选择正确图片。
每个句子读两遍。
(5分)1.____2.____3.____4.____5.____Ⅱ.听句子,选择正确答语。
每个句子读两遍。
(5分)( )6. A. Yes, please. B. Good idea! C. Yes, I’d like to. ( )7. A. That’s right. B. No problem. C. You’re right.( )8. A. Yes, I’d like to. B. It’s over there. C. Yes, I do.( )9. A. She is a teacher. B. She’s from China. C. In a hospital.( )10. A. He works in Beijing. B. He is a doctor. C. He is twenty years old. Ⅲ.听对话,根据对话内容填空。
每组对话读两遍。
(5分)11. Jack is Mike’s _______.12. Tom would like some _______.13.—Does Kate like jiaozi?—No, she _______ like it _______.14. Jim’s mother works in a _______.15. That woman is Kate’s _______.Ⅳ.听对话及问题,选择正确答案。
每组对话和问题读两遍。
(5分)( )16. A. Bread and fish. B. Rice and chicken. C. Hamburgers and vegetables. ( )17. A. A doctor. B. A nurse. C. An office worker.( )18. A. Hong Kong. B. Beijing. C. England.( )19. A. No, they don’t. B. Yes, they do. C. I don’t know.( )20. A. My aunt. B. My mother. C. My sister.Ⅴ.听短文,根据短文内容,完成表格。
七年级上册12月月考试卷1
湖师大附属德山学校2020年下学期第三次阶段性考试卷七年级 英语学科时量:90分钟 满分:100分 命题人:李玲第一部分 阅读技能(共20小题;每小题2分,满分40分)。
阅读下面五篇材料,从每题所给的A 、B 和C 三个选项中,选出最佳选项回答问题或完成 句子。
A David eats well every day. For breakfast, he has bread, eggs and milk. At school, he has vegetables and rice for lunch. After lunch, he eats an apple. In the evening, he has chicken and fruit salad at home. David dislikes milk, but Mom says it is healthy. So he drinks it every day. After eight in the evening, he doesn ’t have any food. Every day, David does some sports to keep healthy. He plays tennis in the morning and plays basketball after school. 1. David has ________ for lunch.A. breadB. vegetablesC. chicken2. The underlined word “dislikes ” means “________” in Chinese.A. 不喜欢B. 不讨厌C. 不了解 3. David doesn ’t eat food after ________ in the evening. A. 7 B. 8 C. 94. David plays ________ after school.A. tennisB. ping-pongC. basketballBA. school thingsB. ball game thingsC. clothes 6. You can't buy________at Huamei Clothes Store.A. jacketsB. socksC. schoolbags7. We can buy a pencil box ,a pen and a big notebook for________yuan.A. 22B. 17C. 158. At Johnson's Store ,________.A. two soccer balls are 20 dollarsB. a ping -pong ball is 1 dollarC. a tennis ball is 10 dollarsCDo you want to have a new look? Do you need new clothes? Why not come and buy clothes at our great sale? All clothes are nice and cheap.For men, we have jackets for $15, and only $25 for two. For women, we have red, blue and white sweaters for only $11. For boys, you can buy T-shirts in blue, black or white, and trousers in black. They are only $8. We have long and short socks in eight colors for girls. How much are they? Only $1 for one pair. And only $10 for twelve! Do you like sports? We have great sports shoes for only $7. And the sports hat is at the price of $4. Come and see at Ms. Brown's Clothes Store! 9. Two men's jackets are ________.A. $15B. $25C. $3010. You can buy ________ at the store.A. men's sweatersB. men's T-shirtsC. women's sweaters 11. Boys' T-shirts are in ________ colors.A. twoB. threeC. seven12. The socks at the store are ________.A. all shortB. all for boysC. $1 for one pairDMy name is Bill. I'm in No. 6 Middle School. I love soccer, ping-pong and basketball. I can play them well. They are easy and interesting for me. I have three soccer balls, six ping-pong balls and two basketballs. I play them with my classmates after school.This is my friend Kate. We are in the same school. But we are not classmates. She is crazy(疯狂的) aboutbaseball. She has 16 baseballs, 8 baseball bats and 5 baseball hats! But she can't play baseball. She thinks it is difficult for her. She only watches it after school. 13. Bill can't play ________ well.A. basketballB. soccerC. baseball14. Bill has ________.A. 6 soccer ballsB. 2 ping-pong ballsC. 3 soccer balls 15. Kate is Bill's ________.A. classmateB. sisterC. friend16. What does Kate do after school?A. She watches baseball games.B. She watches basketball games.装订线内不要答题、装订线外不要写姓名等,违者试卷作分处理 …………⊙……⊙………………………………⊙……⊙………………………………⊙……⊙……………………………⊙……⊙…………班次__________ 姓名 _______ 考号_______C. She watches ping-pong games.EI’m Judy. This is my good friend. Her name is Liu Bei. She likes playing volleyball.Her telephone number is 268-8962.This is Jim. He is an English boy. His Chinese name is Xu Hao. He is in China with hisparents now. He likes playing ping-pong, but he can’t play it well. His telephonenumber is 235-5632.This is Liu Ming. He is Liu Bei’s brother. He likes playing soccer. And he can play itwell. He likes ping-pong, too. He usually plays ping-pong with Xu Hao after school.You can call him at 271-2055.17.Who is Judy’s good friend?A. Liu Bei.B. Jim.C. Liu Ming.18.What’s Jim’s telephone number?A. 268-8962.B. 235-5632.C. 256-5632.19.Liu Ming is Liu Bei’s ________.A. friendB. cousinC. brother20.Jim likes playing ________.A. ping-pongB. volleyballC. tennis第二部分知识运用(共两节;满分30分)完形填空(共15小题;每小题1分,满分15分)阅读下面的短文,掌握其大意,然后从短文后各题所给的A、B、C三个选项中,选出可以填入空白处的最佳选项。
2022-2023学年南京一中实验九上12月月考试卷
2022-2023学年度第一学期第二次阶段性反馈初三数学一.选择题(本大题共6小题,共12分)1.学校组织才艺表演比赛,前5名获奖,有11位同学参加比赛且他们所得的分数互不相等,某同学知道自己的比赛分数后,要判断自己能否获奖,在这11名同学成绩的统计量中只需知道一个量,它是( ) A .众数B .方差C .中位数D .平均数2.如图O 的半径为6,圆心到一条直线的距离为3,则这条直线可能是( ) A .1lB .2lC .3lD .4l3.若关于x 的一元二次方程()2210a x a x a -+-=有一个根是1x =,则a 的值为( ) A .-1B .0C .1D .-1或14. 参加一次活动的每个人都和其他人各握了一次手,所有人共握手10次,有多少人参加活动?设有x 人参加活动,可列方程为( ) A .1(1)102x x -=B .(1)10x x -=C .1(1)102x x +=D .2(1)10x x -=5. 如图,下列条件中不能判定ACD ABC ∆∆∽的是( )A .AB ADBC CD=B .ADC ACB ∠=∠ C .ACD B ∠=∠ D .2AC AD AB =⋅6. 点1(,)A m y ,2(,)B n y 均在抛物线2()7y x h =-+上,若||||m h n h ->-,则下列说法正确的是( ) A .120y y +=B .120y y -=C .120y y -<D .120y y ->二.填空题(本大题共10小题,共20分) 7. 一组数据1,6,3,4-,5的极差是 .8. 在比例尺为1:100000的工程图上,五峰山长江大桥全长约6.4厘米,那么它的实际长度约为 米.9. 在平面直角坐标系中,将抛物线22y x =-先向右平移2个单位,再向上平移3个单位,得到的抛物线的解析式是 .10. 如图,一个转盘,转盘上共有红、白两种不同的颜色,已知红色区域的圆心角为80︒,自由转动转盘,指针落在白色区域的概率是 .11. 如图,PA 、PB 分别切O 于点AB ,点E 是O 上一点,且50E ∠=︒,则P ∠的度数为 .12. 如图所示,一个宽为2cm 的刻度尺在圆形光盘上移动,当刻度尺的一边与光盘相切时,另一边与光盘边缘两个交点处的读数恰好是“2”和“10”(单位:)cm ,那么该光盘的直径是 cm .13. 《九章算术》是中国古代的数学专著,书中记载了这样一个问题:“今有勾五步,股十二步.问勾中容方几何.”其大意是:如图,Rt ABC ∆的两条直角边的长分别为5和12,则它的内接正方形CDEF 的边长为 .14. 发射一枚炮弹,经x 秒后的高度为y 米,且时间与高度的关系为2(0)y ax bx a =+≠.若此炮弹在第7秒与第15秒时的高度相等,则第 秒时,炮弹位置达到最高. 15. 设a ,b 分别是方程220220x x +-=的两个实数根,则22a a b ++的值是 .16. 如图,四边形ABCD 内接于以BD 为直径的O ,CA 平分BCD ∠,若四边形ABCD 的面积是230cm ,则AC = cm .三.解答题(本大题共11小题,共88分) 17. 解下列方程(1)()255x x -=-(2)212270x x ++=18. 甲、乙两人在5次打靶测试中命中的环数如下: 甲:8,8,7,8,9 乙:5,9,7,10,9 (1)填写下表:平均数 众数 中位数 方差 甲 8 8 8 0.4 乙93.2(2)教练根据这5次成绩,选择甲参加射击比赛,教练的理由是什么?(3)如果乙再射击1次,命中8环,那么乙的射击成绩的方差 .(填“变大”、“变小”或“不变” ).19. “共和国勋章”获得者钟南山院士说:按照疫苗保护率达到70%计算,中国的新冠疫苗覆盖率需要达到近80%,才有可能形成群体免疫.本着自愿的原则,18至60周岁符合身体条件的中国公民均可免费接种新冠疫苗.居民甲、乙准备接种疫苗,其居住地及工作单位附近有两个大型医院和两个社区卫生服务中心均可免费接种疫苗,提供疫苗种类如下表:接种地点疫苗种类医院A 新冠病毒灭活疫苗 B重组新冠病毒疫苗(CHO细胞)社区卫生服务中心 C 新冠病毒灭活疫苗 D重组新冠病毒疫苗(CHO细胞)若居民甲、乙均在A 、B 、C 、D 中随机独立选取一个接种点接种疫苗,且选择每个接种点的机会均等.(提示:用A 、B 、C 、D 表示选取结果) (1)居民甲接种的是新冠病毒灭活疫苗的概率为 ;(2)请用列表或画树状图的方法求居民甲、乙接种的是相同种类疫苗的概率.20. 如图,已知二次函数23y ax bx =++的图象经过点(1,0)A ,(2,3)B -. (1)求该二次函数的表达式;(2)用无刻度直尺画出抛物线的对称轴l ;(用虚线表示画图过程,实线表示画图结果) (3)结合图象,直接写出当3y >时,x 的取值范围是 20x -<< .21. 如图,四边形ABCD 中,//AD BC ,90BAD ∠=︒,CB CD =,连接BD ,以点B 为圆心,BA 长为半径作B ,交BD 于点E . (1)试判断CD 与B 的位置关系,并说明理由; (2)若4AD =,60BCD ∠=︒,求图中阴影部分的面积.22. 如图,在ABC ∆中,90B ∠=︒,22AB =,2BC =,以AC 为边作ACE ∆,90ACE ∠=︒,AC CE =,延长BC 至点D ,使32CD =,连接DE .求DE 的长.23. 某商店销售一种进价50元/件的商品,经市场调查发现:该商品的每天销售量y (件)是售价x (元/件)的一次函数,其售价、销售量的二组对应值如表: 售价x (元/件) 55 65 销售量y (件/天)9070(1)直接写出y 关于售价x 的函数关系式: 2200y x =-+ ; (2)若某天销售利润为800元,求该天的售价为多少元/件?(3)设商店销售该商品每天获得的利润为W (元),求W 与x 之间的函数关系式,并求出当销售单价定为多少时,该商店销售这种商品每天获得的利润最大?24. 如图,点A 、B 在O 上,点P 为O 外一点.(1)请用直尺和圆规在优弧AmB 上求一点C ,使CP 平分ACB ∠(不写作法,保留作图痕迹);(2)在(1)中,若AC 恰好是O 的直径,设PC 交O 于点D ,过点D 作DE AC ⊥,垂足为E .若4OE =,求弦BC 的长.25. 已知:如图,AB 为O 的直径,AB AC ⊥,BC 交O 于D ,E 是AC 的中点,ED 与AB 的延长线相交于点F .(1)求证:DE 为O 的切线; (2)求证:AB DF AC BF ⋅=⋅.26. 已知二次函数222(y x mx m m =-++是常数)的图象是抛物线. (1)若抛物线与x 轴只有一个公共点,求m 的值; (2)求证:抛物线顶点在函数22y x x =-++的图象上;(3)若点(2,)B a ,(5,)C b 在抛物线上,且a b >,则m 的取值范围是27. 圆心到弦的距离叫做该弦的弦心距.【数学理解】如图①,在O 中,AB 是弦,OP AB ⊥,垂足为P ,则OP 的长是弦AB 的弦心距.(1)若O 的半径为5,弦AB 的弦心距为3,则AB 的长为 8 .(2)若O 的半径确定,下列关于AB 的长随着OP 的长的变化而变化的结论:①AB的长随着OP的长的增大而增大;②AB的长随着OP的长的增大而减小;③AB的长与OP的长无关.其中所有正确结论的序号是.(3)【问题解决】若弦心距等于该弦长的一半,则这条弦所对的圆心角的度数为︒.(4)已知如图②给定的线段EF和O,点Q是O内一定点.过点Q作弦AB,满足=,请问这样的弦可以作条.AB EF2022-2023学年度第一学期第二次阶段性反馈初三数学答案一.选择题(本大题共6小题,共12分)1.学校组织才艺表演比赛,前5名获奖,有11位同学参加比赛且他们所得的分数互不相等,某同学知道自己的比赛分数后,要判断自己能否获奖,在这11名同学成绩的统计量中只需知道一个量,它是( ) A .众数B .方差C .中位数D .平均数【解答】因为5名获奖肯定是11位同学中最高的,而且11位同学的分数按从小到大排序后,中位数及中位数之后的共有5个数,故只要知道自己的分数和中位数就可以知道是够获奖了.故选C .2.如图O 的半径为6,圆心到一条直线的距离为3,则这条直线可能是( ) A .1lB .2lC .3lD .4l【解答】由于O 的半径为6,圆心到一条直线的距离为3,6>3,所以直线与O 相交 顾选B .3.若关于x 的一元二次方程()2210a x a x a -+-=有一个根是1x =,则a 的值为( ) A .-1B .0C .1D .-1或1【解答】把1x =带入方程中,得到21a =,又因为10a -≠是,所以1a =-,故选A .4. 参加一次活动的每个人都和其他人各握了一次手,所有人共握手10次,有多少人参加活动?设有x 人参加活动,可列方程为( ) A .1(1)102x x -=B .(1)10x x -=C .1(1)102x x +=D .2(1)10x x -=【解答】解:设x 人参加这次聚会,则每个人需握手:(1)x -(次); 依题意,可列方程为:(1)102x x -=.故选:A .5. 如图,下列条件中不能判定ACD ABC ∆∆∽的是( )A .AB ADBC CD=B .ADC ACB ∠=∠ C .ACD B ∠=∠ D .2AC AD AB =⋅【解答】解:若AB AD BC CD =,不能判定ACD ∆与ABC ∆相似,当AB ACBC CD=,结合A A ∠=∠可判定ACD ∆与ABC ∆相似,故A 选项符合题意;若ADC ACB ∠=∠,结合A A ∠=∠可得ACD ABC ∆∆∽,故B 选项不符合题意; 若ACD B ∠=∠,结合A A ∠=∠可得ACD ABC ∆∆∽;故C 选项不符合题意; 若2AC AD AB =⋅,即AC ABAD AC=,结合A A ∠=∠可得ACD ABC ∆∆∽;故D 选项不符合题意; 故选:A .6. 点1(,)A m y ,2(,)B n y 均在抛物线2()7y x h =-+上,若||||m h n h ->-,则下列说法正确的是( ) A .120y y += B .120y y -=C .120y y -<D .120y y ->【解答】解:2()7y x h =-+,∴抛物线开口向上,对称轴为直线x h =,若||||m h n h ->-,则点A 与对称轴距离大于点B , 12y y ∴>,即120y y ->,故选:D .二.填空题(本大题共10小题,共20分) 7. 一组数据1,6,3,4-,5的极差是 10 . 【解答】解:由题意可知,极差为6(4)10--=. 故答案为:10.8. 在比例尺为1:100000的工程图上,五峰山长江大桥全长约6.4厘米,那么它的实际长度约为 6400 米.【解答】解:设这两城市的实际距离是x 厘米,由题意,得 1:100000 6.4:x =,解得:640000x =, 640000厘米6400=米.答:它的实际长度约为6400米, 故答案为:6400.9. 在平面直角坐标系中,将抛物线22y x =-先向右平移2个单位,再向上平移3个单位,得到的抛物线的解析式是 2(2)1y x =-+ .【解答】解:将抛物线22y x =-先向右平移2个单位,再向上平移3个单位,得到的抛物线的解析式是2(2)23y x =--+,即2(2)1y x =-+. 故答案为:2(2)1y x =-+.10. 如图,一个转盘,转盘上共有红、白两种不同的颜色,已知红色区域的圆心角为80︒,自由转动转盘,指针落在白色区域的概率是79.【解答】解:P (指针落在白色区域)3608073609-==, 故答案为:79.11. 如图,PA 、PB 分别切O 于点AB ,点E 是O 上一点,且50E ∠=︒,则P ∠的度数为 80︒ .【解答】解:连接OA ,BO ; 2100AOB E ∠=∠=︒, 90OAP OBP ∴∠=∠=︒, 18080P AOB ∴∠=︒-∠=︒.故答案为:80︒.12. 如图所示,一个宽为2cm 的刻度尺在圆形光盘上移动,当刻度尺的一边与光盘相切时,另一边与光盘边缘两个交点处的读数恰好是“2”和“10”(单位:)cm ,那么该光盘的直径是 10 cm .【解答】解:如图,设圆心为O ,弦为AB ,切点为C .如图所示.则8AB cm =,2CD cm =. 连接OC ,交AB 于D 点.连接OA . 尺的对边平行,光盘与外边缘相切, OC AB ∴⊥. 4AD cm ∴=.设半径为Rcm ,则2224(2)R R =+-, 解得5R =,∴该光盘的直径是10cm .故答案为:1013. 《九章算术》是中国古代的数学专著,书中记载了这样一个问题:“今有勾五步,股十二步.问勾中容方几何.”其大意是:如图,Rt ABC ∆的两条直角边的长分别为5和12,则它的内接正方形CDEF 的边长为6017.【解答】解:设正方形CDEF 边长为x ,则CD DE x ==,由Rt ABC ∆的两条直角边的长分别为5和12可知5AC =,5AD x =-,12BC =, 正方形CDEF , //DE BC ∴, ADE ACB ∴∠=∠,又A A ∠=∠, ADE ACB ∴∆∆∽,∴DE ADBC AC =, ∴5125x x-=, 解得6017x =. 故答案为:6017.14. 发射一枚炮弹,经x 秒后的高度为y 米,且时间与高度的关系为2(0)y ax bx a =+≠.若此炮弹在第7秒与第15秒时的高度相等,则第 11 秒时,炮弹位置达到最高. 【解答】解:此炮弹在第7秒与第15秒时的高度相等,∴抛物线的对称轴是直线715112x +==, ∴炮弹位置达到最高时,时间是第11秒.故答案为:11.15. 设a ,b 分别是方程220220x x +-=的两个实数根,则22a a b ++的值是 2021 . 【解答】解:a ,b 分别是方程220220x x +-=的两个实数根,1a b ∴+=-,220220a a +-=,22022a a ∴+=,故222()202212021a a b a a a b ++=+++=-=, 故答案为2021.16. 如图,四边形ABCD 内接于以BD 为直径的O ,CA 平分BCD ∠,若四边形ABCD 的面积是230cm ,则AC = 215 cm .【解答】解:如图,过点A 作AE AC ⊥,交CD 的延长线于点E ,BD 为O 的直径,90BCD BAD ∴∠=∠=︒, CA 平分BCD ∠, 45ACB ACD ∴∠=∠=︒, 45ABD ADB ∴∠=∠=︒,AB AD ∴=,四边形ABCD 内接于O , 180ABC ADC ∴∠+∠=︒,又180ADE ADC ∠+∠=︒, ABC ADE ∴∠=∠. AE AC ⊥, 90CAE ∴∠=︒,又45ACE ∠=︒ AC AE ∴=90BAD ∠=︒,90CAE ∠=︒, BAC DAE ∴∠=∠.在ABC ∆与ADE ∆中,BAC DAE AB ADABC ADE ∠=∠⎧⎪=⎨⎪∠=∠⎩, ()ABC ADE ASA ∴∆≅∆, ABC ADE S S ∆∆∴=, 30ACE ABCD S S ∆∴==,∴21302AC =, ∴215AC =.故答案为:215.三.解答题(本大题共11小题,共88分) 17. 解下列方程(1)()255x x -=-(2)212270x x ++=【解答】(1)()()2550x x ---= (2)()()390x x ++=()()560x x --= 123,9x x =-=-125,6x x ==18. 甲、乙两人在5次打靶测试中命中的环数如下: 甲:8,8,7,8,9 乙:5,9,7,10,9 (1)填写下表:平均数 众数 中位数 方差 甲 8 8 8 0.4 乙93.2(2)教练根据这5次成绩,选择甲参加射击比赛,教练的理由是什么?(3)如果乙再射击1次,命中8环,那么乙的射击成绩的方差.(填“变大”、“变小”或“不变”).【解答】解:(1)甲的众数为8,乙的平均数1(597109)85=⨯++++=,乙的中位数为9;(2)因为他们的平均数相等,而甲的方差小,发挥比较稳定,所以选择甲参加射击比赛;(3)如果乙再射击1次,命中8环,那么乙的射击成绩的方差变小.故答案为:8,8,9;变小.19. “共和国勋章”获得者钟南山院士说:按照疫苗保护率达到70%计算,中国的新冠疫苗覆盖率需要达到近80%,才有可能形成群体免疫.本着自愿的原则,18至60周岁符合身体条件的中国公民均可免费接种新冠疫苗.居民甲、乙准备接种疫苗,其居住地及工作单位附近有两个大型医院和两个社区卫生服务中心均可免费接种疫苗,提供疫苗种类如下表:若居民甲、乙均在A、B、C、D中随机独立选取一个接种点接种疫苗,且选择每个接种点的机会均等.(提示:用A、B、C、D表示选取结果)(1)居民甲接种的是新冠病毒灭活疫苗的概率为12;(2)请用列表或画树状图的方法求居民甲、乙接种的是相同种类疫苗的概率.【解答】解:(1)居民甲接种的是新冠病毒灭活疫苗的概率为21 42 =,故答案为:12;(2)画树状图如下:共有16种等可能的结果,居民甲、乙接种的是相同种类疫苗的结果有8种,∴居民甲、乙接种的是相同种类疫苗的概率为81162=.20. 如图,已知二次函数23y ax bx =++的图象经过点(1,0)A ,(2,3)B -. (1)求该二次函数的表达式;(2)用无刻度直尺画出抛物线的对称轴l ;(用虚线表示画图过程,实线表示画图结果) (3)结合图象,直接写出当3y >时,x 的取值范围是 20x -<< .【解答】解:(1)将(1,0)A ,(2,3)B -代入二次函数23y ax bx =++, 得03,342 3.a b a b =++⎧⎨=-+⎩解得1,2.a b =-⎧⎨=-⎩该二次函数的表达式为223y x x =--+; (2)如图,直线l 为所求对称轴;由(1)得二次函数的解析式为223y x x =--+, 变换形式得2(1)4y x =-++,所以可以得出顶点D 的坐标为(1,4)-,对称轴为1x =-. (3)令0y =,则2230y x x =--+=, 解得:0x =或2-,结合图形得20x -<<时,3y >. 故答案为:20x -<<.21. 如图,四边形ABCD 中,//AD BC ,90BAD ∠=︒,CB CD =,连接BD ,以点B 为圆心,BA 长为半径作B ,交BD 于点E . (1)试判断CD 与B 的位置关系,并说明理由; (2)若4AD =,60BCD ∠=︒,求图中阴影部分的面积.【解答】解:(1)CD 与B 相切, 理由:过点B 作BF CD ⊥,垂足为F , //AD BC , ADB CBD ∴∠=∠, CB CD =, CBD CDB ∴∠=∠, ADB CDB ∴∠=∠.在ABD ∆和FBD ∆中, ADB FDB BAD BFD BD BD ∠=∠⎧⎪∠=∠⎨⎪=⎩,()ABD FBD AAS ∴∆≅∆,BF BA ∴=,则点F 在圆B 上,CD ∴与B 相切;(2)60BCD ∠=︒,CB CD =, BCD ∴∆是等边三角形, 60CBD ∴∠=︒BF CD ⊥,30ABD DBF CBF ∴∠=∠=∠=︒, 60ABF ∴∠=︒,4AD =,43AB ∴=,∴阴影部分的面积ABD ABE S S ∆=-扇形2130(43)4342360π⋅⨯=⨯⨯-834π=-.22. 如图,在ABC ∆中,90B ∠=︒,22AB =,2BC =,以AC 为边作ACE ∆,90ACE ∠=︒,AC CE =,延长BC 至点D ,使32CD =,连接DE .求DE 的长.【解答】解:90B ∠=︒,AB =2BC =,AC ∴ CE AC =,∴CE =∴AB CE =-,AC CD ==, ∴AB ACCE CD=, 90B ∠=︒,90ACE ∠=︒,90BAC BCA ∴∠+∠=︒,90BCA DCE ∠+∠=︒, BAC DCE ∴∠=∠, ABC CED ∴∆∆∽,∴AB BC CE DE ==,DE ∴==23. 某商店销售一种进价50元/件的商品,经市场调查发现:该商品的每天销售量y (件)是售价x (元/件)的一次函数,其售价、销售量的二组对应值如表:(1)直接写出y 关于售价x 的函数关系式: 2200y x =-+ ; (2)若某天销售利润为800元,求该天的售价为多少元/件?(3)设商店销售该商品每天获得的利润为W (元),求W 与x 之间的函数关系式,并求出当销售单价定为多少时,该商店销售这种商品每天获得的利润最大? 【解答】解:(1)设关系式为y kx b =+,把(55,99)(65,70)代入得: 55996570k b k b +=⎧⎨+=⎩, ∴2200k b =-⎧⎨=⎩,y ∴与x 的之间的函数关系式为2200y x =-+,故答案为:2200y x=-+;(2)若某天销售利润为800元,则(50)(2200)800x x--+=,解得:160x=,290x=,答:该天的售价为60元或者90元;(3)设总利润为w,根据题意得,22(50)(2200)2300100002(75)1250w x x x x x=--+=-+-=--+,20a=-<,∴当75x=时,w有最大值,答:当销售单价定为75元时利润最大.24. 如图,点A、B在O上,点P为O外一点.(1)请用直尺和圆规在优弧AmB上求一点C,使CP平分ACB∠(不写作法,保留作图痕迹);(2)在(1)中,若AC恰好是O的直径,设PC交O于点D,过点D作DE AC⊥,垂足为E.若4OE=,求弦BC的长.【解答】解:(1)如图,点C即为所求;(2)如图,连接OD交AB于点F.∠=∠,PCA PCB=,∴BD AD∴⊥,OD AB⊥,DE OA∴∠=∠=︒,90OFA OED∠=∠,OA OD=,FOA EOD∴∆≅∆,OFA OED AAS()∴==,4OE OF⊥,OD AB∴=,BF AFOC OA=,∴==.BC OF2825. 已知:如图,AB为O的直径,AB AC⊥,BC交O于D,E是AC的中点,ED与AB的延长线相交于点F.(1)求证:DE为O的切线;(2)求证:AB DF AC BF⋅=⋅.【解答】证明:(1)连AD,OD,AB 为O 的直径,90ADB ADC ∴∠=∠=︒, E 是AC 的中点,EA ED ∴=,EDA EAD ∴∠=∠,OD OA =,ODA OAD ∴∠=∠,EDO EAO ∴∠=∠,AB AC ⊥90EAO ∴∠=︒,90EDO ∴∠=︒,DE ∴为O 的切线;(2)90BAC ADC ∠=∠=︒,C BAD ∴∠=∠,ABD CBA ∠=∠,ABD CBA ∴∆∆∽, ∴AB BD AC AD=, 90FDB BDO BDO ADO ∠+∠=∠+∠=︒,FDB ADO OAD ∴∠=∠=∠,F F ∠=∠,FDB FAD ∴∆∆∽, ∴BD BF AD DF =, ∴AB BF AC DF=,AB DF AC BF ∴⋅=⋅.26. 已知二次函数222(y x mx m m =-++是常数)的图象是抛物线.(1)若抛物线与x 轴只有一个公共点,求m 的值;(2)求证:抛物线顶点在函数22y x x =-++的图象上;(3)若点(2,)B a ,(5,)C b 在抛物线上,且a b >,则m 的取值范围是 72m >. 【解答】解:(1)1a =,2b m =-,2c m =+,∴△2224(2)41(2)4(2)b ac m m m m =-=--⨯⨯+=--. 抛物线与x 轴只有一个公共点,2244(2)0b ac m m ∴-=--=,解得12m =,21m =-.(2)22222()2y x mx m x m m m =-++=--++,∴顶点坐标为2(,2)m m m -++,令x m =时,函数2222y x x m m =-++=-++,∴抛物线顶点在函数22y x x =-++的图象上.(3)抛物线开口向上,对称轴为直线x m =,∴当a b >时,|2||5|m m ->-,当20m ->时,2m <,50m ->,25m m ∴->-,不符合题意,当20m -<,50m ->时可得25m m ->-, 解得72m >. 当20m -<,50m -<时,5m >,25m m ∴-<-,符合题意, 故答案为:72m >. 27. 圆心到弦的距离叫做该弦的弦心距.【数学理解】如图①,在O 中,AB 是弦,OP AB ⊥,垂足为P ,则OP 的长是弦AB 的弦心距.(1)若O 的半径为5,弦AB 的弦心距为3,则AB 的长为 8 .(2)若O 的半径确定,下列关于AB 的长随着OP 的长的变化而变化的结论: ①AB 的长随着OP 的长的增大而增大;②AB 的长随着OP 的长的增大而减小;③AB 的长与OP 的长无关.其中所有正确结论的序号是 .(3)【问题解决】若弦心距等于该弦长的一半,则这条弦所对的圆心角的度数为 ︒.(4)已知如图②给定的线段EF 和O ,点Q 是O 内一定点.过点Q 作弦AB ,满足AB EF =,请问这样的弦可以作 条.【解答】解:(1)连接OA ,如图,OP AB ⊥,12AP BP AB ∴==, 在Rt OAP ∆中,由勾股定理得224AP OA OP -,28AB AP ∴==,故答案为:8;(2)设O 的半径为(0)r r >(点值),(0)OP x x =>,由(1)知,2AB AP =,22=-,AP OA OP222AB AP AP∴==(2)422=-OA OP4()22=-4()r x22=-+,44x r二次项2-的系数为404x-<,AB随x的增大而减小,∴>时,2xOP>,2∴随x的增大而减小,AB∴也随x的增大而矩形,AB即AB的长随OP的增大而减小,故正确结论的序号是②,故答案为:②;(3)连接OA,弦心距等于该弦长的一半,∴=,OP APAOP∴∠=︒,45AOB AOP∴∠=∠=︒,290故答案为:90;(4)根据圆的轴对称性质可知,这样的弦可以作2条,故答案为:2.。
2022-2023学年北京市第二中学高三上学期12月考化学试卷含逐题详解
北京二中2022—2023学年度高三年级12月月考试卷化学可能用到的相对原子质量:H 1C 12O 16N 14Na 23Cl 35.5Ti 48Fe 56第一部分选择题本部分共14题,每题3分,共42分。
在每小题列出的四个选项中,选出最符合题目要求的一项。
1.用化学用语表示34NH +HCl=NH Cl中的相关微粒,其中正确的是A.中子数为8的氮原子为87NB.由H 和Cl 形成HCl 的过程为C.3NH 的结构式为D.-Cl 的结构示意图为2.将2SO 通入下列溶液,实验现象体现的2SO 的性质不正确...的是溶液实验现象2SO 的性质A 石蕊试液溶液变红酸性B 溴水溶液褪色漂白性C 4KMnO 酸性溶液溶液褪色还原性D2H S 溶液出现淡黄色浑浊氧化性A.AB.BC.CD.D3.设A N 是阿伏加德罗常数的值,下列说法正确的是A.16218g D O 中含有的中子数为A10N B.230.1mol/L Na CO 溶液中含+Na 的个数为A 0.2N C.22.4L (标准状况)氨气所含共价键的数目为A3N D.41mol CH 与2Cl 在光照下反应生成的3CH Cl 分子数为A N 4.下列反应的原理用离子方程式表示正确的是A.室温下,测得氯化铵溶液pH 7<,证明一水合氨是弱碱:++42323NH +2H O=NH H O+H O⋅B.用氢氧化钠和铝粉做管道疏通剂:--2222Al+2OH +2H O=2AlO +3H ↑C.用碳酸氢钠溶液检验水杨酸中的羧基:+-32HCO →+2H 2O+2CO 2↑D.用高锰酸钾标准溶液滴定草酸:-+2-2+424222MnO +16H +5C O =2Mn +10CO +8H O ↑5.利用下列装置(夹持装置略)进行实验,能达到实验目的的是ABCD制备无水2MgCl 制备溴苯并验证有HBr 产生制备并收集氨气制备并收集2NO A .AB.BC.CD.D6.磷酸亚铁锂(4LiFePO )电池是新能源汽车的动力电池之一。
上交大附中英语高一12月月考试卷
上海交通大学附属中学2017-2018学年度第一学期高一英语月考二试卷Ⅱ. Grammar and VocabularySection A: Multiple ChoicesDirections:Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentences.21. Dawn ____ as they climbed into the boat and pushed it off from the bank.A. would just breakB. was just breakingC. has just brokenD. had just been breaking22. Large quantities of money ____ in the stock market, but it returns little.A. has been investedB. have been investedC. has investedD. have invested23. By the time you are 18, you ______ a turning point of life style in an entirely natural manner.A. had reachedB. have reachedC. will have reachedD. will reached24. When Alice came to, she did not know how long she ______ there.A. had been lyingB. has been lyingC. was lyingD. has lain25. The teachers _____ seemed _____ a meeting when I passed the meeting room.A. present; to be havingB. presenting; to be havingC. present; to haveD. presented; to have had26. I hear they’ve promoted Tom, but he didn’t mention _____ when he talked on the phone.A. to promoteB. having been promotedC. having promotedD. to be promoted27. ____ due to the bankruptcy of the factory, many workers turned to training centers, ______ tolearn something with which they could go back to the labour market.A. Leaving unemployed; hopedB. Left unemployed; hopingC. Leaving to be employed; hopingD. Left to employ; hoped28. I have no objection ______ the weekend with my children, but don’t lose your temper becausethey are sometimes very naughty.A. to spendB. to spendingC. for you to spendD. spending29. _______ being on the point of conducting an experiment, I stopped ______ to them and keptquiet.A. Their; talkingB. Them; to talkC. I ; to talkD. They; talking30. _____, but he still couldn’t understand the logical connection of the two subjects.A. Having told many timesB. Having been told many timesC. He was told many timesD. Many times as he was told31. Y ue Yao, 17, a student of High School Affiliated to Shanghai Jiao Tong University, JiadingCampus, ______ the Intel ISEF Best of Category Awards, used three-color combinations of lights _______ through fiber-optic cables as the basic for new computing techniques.A. that won; transmittingB. won; transmittedC. who won; having been transmittedD. winning; transmitted32. And there, almost ______ in the big chair, sat her little brother, who never had to be told tokeep quiet.A. having lostB. losingC. to be lostD. lost33. Mr. Green stood up in defence of the 16-year-old boy, saying that he was not the one _____.A. blamedB. blamingC. to blameD. to be blamed34. After ______ for the job, you will be required to take a language test.A. being interviewedB. interviewedC. interviewingD. having interviewed35. Mckeil Patterson, who suffered from cerebral palsy(脑瘫), is given the chance by her coach tobe a cheerleader, which made her feel proud and she ______ very much.A. approved ofB. appreciatedC. interpretedD. enlightened36. The American newspaper group didn’t ____ reflect American Government opinions as heknew well.A. by no meansB. by any meansC. by some meansD. by means of37. His modest business eventually ____ into a supermarket empire.A. extendedB. exploitedC. explodedD. expanded38. One of the advantages of living on the top floor of a high rise is that you can get a good _____of the city.A. sightB. perspectiveC. viewD. scenery39. I am exhausted for having been working for six hours. Could Jennifer _____ me at thefollowing meeting?A. substituteB. exchangeC. replaceD. approachSection B: Blank filling(Grammar)Directions: Fill in the blanks with proper form of the verbs.(A)The International Monetary Fund(IMF,国际货币基金组织)welcomed China’s yuan into its elite reserve currency basket on November 30, 2015 and the yuan joined the U.S. dollar, the euro, the Japanese yen and the British pound in the basket of currencies that make up the Special Drawing Right(SDR,特别提款权), ___40___(recognize)the international status of China’s currency.For the Chinese, the yuan’s higher status is part of a larger strategy ___41___(boost)the country’s economic influence. The government has increased lending to foreign governments, greatly expanded trade ___42___(settle)in yuan and created emergency credit facilities for other government.Over the past year, Beijing ___43___(roll)out a series of policies at home—including freer interest rates, easier foreign investor access, and more transparent statistical standard—to meet the IMF’s criteria for yuan inclusion in its SDR basket.(B)People going shopping in America can expect ___44___(treat)with respect from the verybeginning. When customers get to the store they are viewed as honored guests. Customers don’t usually find store clerks ___45___(sit)around watching TV or playing cards. Instead, the clerks greet them warmly and offer to help them find what they want. Customers usually don’t have to ask how much items cost since prices ___46___(mark)clearly.For many American customers, service is everything. If a person receives poor service from a store, he probably will avoid ___47___(shop)there in the future. On the other hand, customers often remain loyal to a business that has excellent services even if their prices are high.Section C: Blank filling(Vocabulary)Directions: Fill in the blanks with proper form of the given words.48. Disney __________(amuse)parks used to let disabled visitors cut to the front of the line forrides and attractions, which could save them an hour or more of waiting.49. Hillary was in favour of the invasion of Iraq, against gay marriage and __________(sympathy)to the Palestinian cause, until she changed her mind on those and a succession of other issues. 50. Boren said the university is looking into a range of __________(punish)for the studentscheating in the examinations, including expulsion(开除).51. Teacher guided the students to read for 30 mins, and the __________(remain)class time wasused for independent reading.52. For _________(illustration)purposes, only a simple example is given here.53. Exposure to alcohol and cigarette represents a serious __________(depart)from hiscommitment to his wife.54. It is very disgraceful to make fun of others’ ___________.(Fortune)55. Looking and feeling different is a cultural venture that is encouraged in Western societies.Tattoos __________(symbol)this personal quest for individuality are a normative way of personalizing and customizing the self.Section DDirections: Complete the following passage by using the words in the box. Each word can only beThe rise in stories describing events that never happened, often involving fake people in fake place, has led to Facebook and Google’s ___56___ to deal with them. But are we really so easy to fool? According to several studies, the answer is yes: even the most obvious fake news starts to become believable if it’s ___57___ enough times.In the months running up to the US election there was a surge(大浪)in fake news. According to an analysis by Craig Silverman, a journalist, during this time the top 20 fake stories in circulation ___58___ the top 20 stories from 19 mainstream publishers.Paul Horner, a creative publisher of fake news, has said he believes Donald Trump was elected because of him.“My sites were picked up by Trump supporters all the time (i)follo wers don’t fact-check anything –they’ll post everything, believe anything,”he told the Washington Post.Silverman previously ___59___ rumours circulating online in 2014 and found that shares andsocial interactions around fake news articles dwarfed(使…相形见绌)those of the articles that exposed them. According to Silverman, fake news stories are engineered to appeal to people’s hopes and fears, and aren’t ___60___ by reality, which gives them the edge in creating shareable content.You might think you’re immune to falling for these lies, but a wealth of research disagrees. Back in the 1940s, researchers found that“the more a rumour is told, the more ___61___ it sounds.”They suggested this means that a rumour born out of mild suspicion can, by gaining currency, shift public thinking and opinion.This false impression of truth was ___62___ practically in 1977 when researchers in the US quizzed college students on the actuality of statements that they were told may be true or false. The researchers found that simply repeating the statements at a later data was enough to increase the ___63___ of the students believing them.Last year, Lisa Fazio at Vanderbilt University in Tennessee and her team found that students become more likely to believe a statement that they know must be false if it is repeated.“Our research suggests that false news can and likely does affect people’s ___64___. Even if people are conscious that a headline is false, reading it multiple times will make it seem more trustworthy,”Fazio says.Reassuringly, the team found that a person’s knowledge has a large influence over their beliefs, but it’s still a worrying ___65___ given that falsehoods appear repeatedly in our newsfeeds every day.Ⅲ. Reading ComprehensionSection ADirections:For each blank in the following passages there are four words or phrases marked A, B, C, and D. Fill in each blank with the word or phrase that best fits the context.Why do people go to university? There is a popular notion that a college education is something to be endured in order to become ___66___ to obtain certain kinds of jobs or to go to graduate school. This is not what we are trying to do at Harvard, nor would we wish to have many students here who took such a(n) __67__ view of a college career.There are several goals we aim to reach in our undergraduate program.The most obvious one is to give knowledge—fairly __68__ knowledge in one field and a more general knowledge of a variety of other subject areas which you may choose according to your interest. But if acquiring knowledge is a self-evident part of a college education, it is __69__ the most important. Remarkably few of the facts you learn here will remain in your __70__ for many years, and some of those that do will even be proved __71__ by new knowledge.__72__, we can instill(灌输) certain attitudes of mind—a willingness to accept uncertainty, and the lack of definite truths; independence of mind, and a respect for facts and for the uncomfortable conclusions which facts sometimes lead to.In addition to these __73__ qualities, a college education should try to lay a foundation for the creative use of __74__ time. Some of this capacity can be stimulated in the classroom—in courses in the humanities and the arts. Yet, at least as much __75__ will occur outside the lecture hall—on athletic fields, in music rooms, student theaters, concert halls, and so forth.These are some of the __76__ of a liberal college education as I see them. I cannot resist concluding with a few private thoughts about our new careers at Harvard.To begin with, I hope that we will think __77__ about what we want to accomplish here. It would be __78__ for you to set your sights on some limited goal, such as getting good grades or merely getting into one or another graduate school.Second, I hope that you will give some thought to what you can do for others during your stay here. There are many problems waiting for your help, and many people who could __79__ your efforts.My final bit of advice. whatever else we do, let us remember not to take ourselves too seriously. However great our problems may seem, however urgent our complaints, they are overshadowed(黯然失色)by the __80__ of countless other people on our planet.66. A. fascinated B. qualified C. determined D. required67. A. optimistic B. strong C. narrow D. sensitive68. A. concentrated B. expanded C. informed D. illustrated69. A. by far B. far from C. free from D. without doubt70. A. memory B. position C. evaluation D. foundation71. A. useful B. essential C. false D. common72. A. Besides B. However C. Therefore D. Somehow73. A. physical B. inborn C. emotional D. intellectual74. A. business B. study C. experiment D. leisure75. A. appreciation B. stimulation C. participation D. exposure76. A. benefits B. aims C. problems D. achievements77. A. broadly B. honestly C. freely D. continually78. A. fantastic B. magic C. tragic D. basic79. A. suffer from B. profit from C. reflect on D. complain about80. A. inspiration B. difference C. ambitions D. difficultiesSection BDirections: Read the following four passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C, and D. Choose the one that fits best according to the information given in the passage you have just read.(A)Waitangi Day is celebrated on the 6th of February every year. It is a public holiday for the entire nation. It is celebrated as a commemoration of the signing of the Treaty of Waitangi. The Treaty of Waitangi was a document signed between the English settlers and indigenous(本土的)Maori people. When the treaty was signed, it made New Zealand an English Empire and the Maori people had rights to their land. It made the Maori and English settlers one people, with the same rights and ruled by the same people.Waitangi Day is celebrated in many different ways. A formal service of remembrance(纪念)is held at Waitangi, which is in Northland(at the top of the North Island). It is attended by the Prime Minister, the Governor General(the Queen’s representative), the Maori Prince and Maori Chiefs and their Whanau(family).Traditional people would have attended church in the morning and spent time with family and friends, reflecting on the true meaning of the treaty. Now we go to public concerts and festivalswhere you may be able to watch traditional Maori dancing and speeches made by leaders and important people from the community or country. There are also concerts that modern day singers and artist perform at. But many families and friends will simply spend the day at the beach soaking up the sun as it is the hottest time of the year.Waitangi Day is special as it is our national day. It marks the day we become one nation not two separate races living on common land. There was a move to call it New Zealand Day but the majority of people chose to still call it Waitangi Day and so the name remains reminding us of our indigenous people.81. What made the Maori people have the same rights with English settlers to their land?A. The invasion of English settlers.B. The Treaty of Waitangi.C. The Prime Minister.D. The Governor General.82. Which of the following is NOT the way for Maori people to celebrate Waitangi Day?A. A formal service of remembrance.B. Attending concerts.C. Watching modern Maori dancing and speeches.D. A day spent at the beach.83. Why is Waitangi Day so special in New Zealand?A. Because it reminds Maori of their indigenous people there.B. Because it is a public holiday.C. Because the local people can enjoy themselves in many ways on that day.D. Because it makes two separate races share the common land.(B)84. What does the word“irritate”in Paragraph 2 most probably mean?A. annoyB. remindC. amuseD. impress85. Which two hotels offer a mobile app for customers to check in?A. Yotel New York and Marriott Detroit Airport.B. Marriott Detroit Airport and Radisson LaCrosse.C. Marriott Detroit Airport. and Hyatt Regency Minneapolis.D. Hyatt Regency Minneapolis and Radisson LaCrosse.86. Which hotel will send you a receipt by email?A. Yotel New YorkB. Marriott Detroit AirportC. Radisson LaCrosseD. Hyatt Regency Minneapolis87. Which of the following is TRUE according to the passage?A. At Yotel New York, a robot will help you with all the check-in process.B. With its check-in app, you may enter your room in Marriott without a key.C. Hyatt Regency Minneapolis is close to an airport terminal.D. The barcode you receive from Radisson contributes to the fast check-in.(C)During the seventeenth and eighteenth centuries, almost nothing was written about the contributions of women during the colonial period and the early history of the newly formed United States. Lacking the right to vote and absent from the seats of power, women were not considered an important force in history. Anne Bradstreet wrote some significant poetry in the seventeenth century, Mercy Otis Warren produced the best contemporary history of the American Revolution, and Abigail Adams penned important letters showing she exercised great political influence over her husband, John, the second President of the United States. But little or no notice was taken of these contributions. During these centuries, women remained invisible in history books.Throughout the nineteenth century, this lack of visibility continued, despite the efforts of female authors writing about women. These writers, like most of their male counterparts, were amateur historians. Their writings were celebratory in nature, and they were uncritical in their selection and use of sources.During the nineteenth century, however, certain feminists(女权主义者)showed a keen sense of history by keeping records of activities in which women were engaged. National, regional, andlocal women's organizations assembled accounts of their doings. Personal correspondence(通信), newspaper clippings, and souvenirs were saved and stored. These sources from the core of the two greatest collections of women's history in the United States; one at the Elizabeth and Arthur Schlesinger Library at Radcliffe College, and the other the Sophia Smith Collection at Smith College. Such sources have provided valuable materials for later generations of historians.Despite the gathering of more information about ordinary women during the nineteenth century, most of the writing about women conformed to the "great women" theory of history, just as much of mainstream American history concentrated on "great men." To demonstrate that women were making significant contributions to American life, female authors singled out women leaders and wrote biographies. or else important women produced their autobiographies. Most of these leaders were involved in public life as reformers, activists working for women's right to vote, or authors, and were not representative at all of the great of ordinary woman. The lives of ordinary people continued, generally, to be untold in the American histories being published.88. What is the passage mainly about?A. The role of literature in early American histories.B. The place of American women in written histories.C. The keen sense of history shown by American women.D. The“great women”approach to history used by American historians.89. In the 1st paragraph, Bradstreet, Warren, and Adams are mentioned to show that ______.A. a woman’s status was changed by marriageB. even the contributions of outstanding women were ignoredC. only three women were able to get their writing publishedD. poetry produced by women was more readily accepted than other writing by women90. In the 2nd paragraph, what weakness in 19th-century histories does the author point out?A. They put too much emphasis on daily activities.B. They left out discussion of the influence of money on politics.C. They were printed on poor-quality paper.D. The sources of the information they were based on were not necessarily accurate.91. What use was made of the 19th-century women’s history materials in the Schlesinger Libraryand the Sophia Smith Collection?A. They were combined and published in a multivolume encyclopedia.B. They formed the basic of college courses in the nineteenth century.C. They provided valuable information for twentieth-century historical researchers.D. They were shared among women’s colleges throughout the United States.(D)Culture can affect not just language and customs, but also how people experience the world on surprisingly basic levels.Researchers, with the help of brain scans, have uncovered shocking differences in perception (感知)between Westerners and Asians, what they see when they look at a city street, for example, or even how they perceive a simple line in a square, according to findings published in a leading science journal.In Western countries, culture makes people think of themselves as highly independent entities(实体). When looking at scenes, Westerners tend to focus more on central objects than on their surroundings. East Asian cultures, however, emphasize inter-dependence. When Easterners look at a scene, they tend to focus on the surroundings as well as the object.Using an experiment involving two tasks, Dr. Hedden asked subjects to look at a line simply to estimate its length, a task that is played to American strengths. In another, they estimated the line’s le ngth relative to the size of a square, an easier task for the Asian.The level of brain activity, by tracking blood flow, was then measured by Brain Scanners. The experiment found that although there was no difference in performance, and the tasks were very easy, the levels of activity in the subjects’ brain were different. For the Americans, areas linked to attention lit up more, when they worked on the task they tended to find more difficult --- estimating the line’s size relative to the square. For the Asians, the attention areas lit up more during the harder task also –estimating the line’s length without comparing it to the square. The findings are a reflection of more than ten years of previous experimental research into east-west differences.In one study, for instance researchers offered people a choice among five pens; four red and one green. Easterners were more likely to choose a red pen while Westerners were more likely to choose the green one.Culture is not affecting how you see the world, but how you choose to understand and internalize(使内化)it. But such habits can be changed. Some psychological studies suggest that when an Easterner goes to the West or vice versa, habits of thought and perception also begin to change. Such research gives us clues on how our brain works and is hopeful for us to develop programs to improve our memory, memory techniques and enhance and accelerate our learning skills.92. According to the passage, Chinese people are most likely to _____.A. more emphasize independent thinkingB. always focus more on their surroundingsC. focus more on the context as well as the objectD. think of Westerners as highly independent entities93. We know from the passage that people’s brains will be more active when _____.A. the task is much easierB. the blood flow is trackedC. people begin to choose colorsD. the task is more difficult94. What do the findings of the experiments mentioned in the passage indicate?A. They indicate that culture has a great impact on the way people talk and behave.B. They show that Easterners and Westerners have great differences in perceiving the world.C. They suggest that people’s habits of perception can be changed in different cultures.D. They make it clear that Easterners and Westerners lay emphasis on different things.95. It can be inferred from the passage that ______.A. Easterners prefer collectivism to individualismB. East Asian cultures lay more emphasis on independenceC. It took over ten years to find out how to improve our brainpowerD. Americans will change their habits of perception when they’re in BritainⅣ. TranslationSection A1. 不同情被绳之以法的坏蛋2. 高度评价这场数字革命3. 用动画表达某人的情感4. 忍不住饶恕这个调皮的孩子5. 文字以外的交流方式6. 翻开新的一页7. 以鲜明的对比来呈现孩子们的心情8. 不遗余力地搜寻学习外语的新方法Section B Sentences1. 这家店出售手绘连环画,范围从童话到侦探故事不等。
高三上学期12月语文试卷分类汇编:文言文阅读
文言文阅读湖南师大附中2023-2024学年高三上学期12月月考卷(四)语文试题(一)文言文阅读(本题共5小题,20分)阅读下面的文言文,完成10~14题。
材料一:先生讳愈,字退之。
七岁属.文,意语天出。
长悦古学,业孔子、孟子,而侈其文。
贞元十四年,用进士从军宰相董晋平汴州之乱,又佐徐州、青、淄,通漕江淮。
十九年,关中旱饥,人死相枕藉,吏刻取怨。
先生列言天下根本,民急如是,请宽民徭而免田租之弊。
专政者恶之,行为连州阳山令,阳山民至今多以先生氏洎字呼其子孙。
宪宗盛仪卫迎佛骨,士女纵观倾城,先生大惧,遂移典校上章极谏,贬潮州刺史。
大官谪为州县,薄.不治务,先生临之,若以资迁。
洞究海俗海夷陶然遂生鲜鱼稻蟹不暴民物。
掠卖之口,计庸免之,来相计直,辄与钱赎。
及还,著之赦令。
转刺史袁州如潮。
征拜国子祭酒,其属一奏用儒生,日集讲说生徒,官之以艺学浅深为顾。
既除兵部侍郎,方镇反,太原兵以轻利诱回纥,召先生祸福,譬引虎啮臃血,直今所患,非兵不足,遽疏陈得失。
王廷凑屠衣冠,围牛元翼,人情望之若大炕虺,先生奉诏入贼,渊然无事行者。
既至召众贼帅前抗声数责致天子命,词辩而锐,悉其机情,贼众惧伏。
贼帅曰:“惟公指。
”令乃约之出元翼,归士大夫之丧。
功可意而复,穆宗大喜,且欲相之,迁吏部侍郎。
四年十二月丙子,薨.靖安里第,年五十七。
嗣天子不御朝,赠礼部尚书。
(节选自皇甫混①《韩文公神道碑》)材料二:贞元十二,兄佐汴州。
我游自徐,始得兄交。
视我无能,待予以友。
讲文析道,为益之厚。
二十九年,不知其久。
兄以疾休,我病卧室。
三来视我,笑语穷日。
何荒不耕,会之以一。
人心乐生,皆恶言凶。
兄之在病,则齐其终。
顺化以尽,靡惑于中。
(节选自李翱②《祭吏部韩侍郎文》)【注】①皇甫混:唐朝时期大臣,是韩愈的学生、好友。
②李翱:唐朝时期大臣、文学家、哲学家、诗人,是韩愈的学生、好友。
黑。
每涂对一处给1分,涂黑超过三处不给分。
(3分)洞究A海俗B海夷C陶然D遂生E鲜鱼F稻蟹G不暴H民物。
2023-2024学年上海建平中学高一上学期数学月考试卷及答案(2023.12)
1建平中学2026届第一学期高一年级12月数学月考2023.12一、填空题(本大题共有12题,满分54分,第题每题4分,第7-12题每题5分)1.已知集合{}{}21,0,1,2,1,,A B x x x =−=−,且B A ⊆,则x =______. 2.已知一个扇形的圆心角大小为3π,弧长为23π,则其面积为______. 3.已知幂函数()()212222m m f x mm x+=−−在[)0,+∞上是增函数,则m =______.4.已知角α的终边经过点()1,0P −,则角α的余弦值为______. 5.设全集{}0,1,2,3,4,5U =,集合{}{}22320,A x xx Bx xx =−+===,则A B = ______. 6.若函数()f x =+为偶函数且非奇函数,则实数a 的取值范围为______.7.定义在()1,2−上的函数()y lg x a =+不存在反函数,则实数a 的取值范围是______. 8.若"23""2"x x a −<<−<<是的充分不必要条件,则a 的取值范围是______. 9.如果关于x 的一元三次方程3232100a x a x a x a +++=(,0,1,2,3i a R i ∈=且30a ≠)有三个实数根123,,x x x ,则12233112x x x x x x x x +++=______(用0123,,,a a a a 表示)10.已知定义在R 上的函数()2224x x x f a x e ae −−=,其中0a >,如果函数()f x 与函数()()f f x 的值域相同,则a 的取值范围是______.11.已知函数()21,02,0x a x x f x x ax x ++−>= −+≤的最小值为1a +,则实数a 的取值范围为______. 12.已知函数()()2,f x x g x ax x ==−,其中0a >,若对任意的[]11,3x ∈,总存在[]21,4x ∈,使得()()()()1212f x f x g x g x =成立,则实数a 的取值范围是______. 二、选择题(本大题共有4题,满分20分,每题5分)13.用反证法证明命题“设,a b N ∈,如果ab 能被5整除,那么,a b 中至少有一个能被5整2除”,假设应该是( ) A .,a b 都能被5整除 B .,a b 至多有一个能被5整除 C .a 或b 不能被5整除D .,a b 都不能被5整除14.在平面直角坐标系中,给出下列命题:①小于2π的角一定是锐角,②钝角一定是第二象限的角,③第一象限的角一定不是负角,④第二象限角一定大于第一象限角,其中假命题的个数是( ) A .1个 B .2个C .3个D .4个15.已知函数()2,,x x f x x x =为无理数为有理数,有下列两个命题: ①()f x 的值域为R ;②对任意正有理数a ,函数()()g x f x a =−存在奇数个零点;则下列判断正确的是( ) A .①②均为真命题B .①②均为假命题C .①为真命题②为假命题D .①为假命题②为真命题16.已知函数()2f x x ax b =++,若不等式()2f x ≤在[]1,5x ∈上恒成立,则满足要求的有序数对(),a b 有( ) A .0个B .1个C .2个D .无数个三、解答题(共5道大题,其中17题14分,18题14分,19题14分,20题16分,21题18分,共计76分)17.(8分)求下列关于x 的方程的解集. (1)()31lgx lg x ++=;(2)()()2295134x x log log +=++.318.(10分)已知函数()f x 是定义在R 上的奇函数,且当(),0x ∈−∞时,()x f x e −=. (1)求证:()f x 在定义域内是严格减函数:(2)若()()2610f tx f tx +−−≥对[]1,4x ∈恒成立,求实数t 的取值范围.19.(10分)近来,国内多个城市纷纷加码布局“夜经济”,以满足不同层次的多元消费,并拉动就业、带动创业,进而提升区域经济发展活力.某夜市的一位工艺品售卖者,通过对每天销售情况的调查发现:该工艺品在过去的一个月内(以30天计),每件的销售价格()P x (单位:元)与时间x (单位:天)的函数关系近似满足()110P x x =+,日销售量....()Q x (单位:件)与时间x (单位:天)的部分数据如下表所示: x10 15 20 25 30 ()Q x5055605550(1)给出以下四个函数模型:①()Q x ax b =+;②()Q x a x m b =−+;③()Q x a bx =−;④()b Q x a log x =⋅.请你根据上表中的数据,从中选择你认为最合适的一种函数模型来描述日销售量()Q x 与时间x 的变化关系,并求出该函数的解析式及定义域...; (2)设该工艺品的日销售收入为()f x (单位:元),求()f x 的最小值.420.(12分)已知函数()(](),,123,1,22x x x f x x x ∈−∞= +∈−(1)写出()f x 的单调区间以及在每个单调区间上的单调性(无需证明): (2)解不等式()20ff x +<;(3)若()12,,2x x ∈−∞满足()()12f x f x =,且12x x ≠,求证:122x x +<.521.(12分)设函数()f x 定义域为D ,如果存在常数K 满足:任取12,x x D ∈,都有()()1212f x f x K x x −≤−,则称()f x 是L 型函数,K 是这个L 型函数的L 常数.(1)判断函数()[]2,1,2f x x x =∈−是不是L 型函数,并说明理由;如果是,给出一个L 常数; (2)设函数()y f x =是定义在区间[],m n 上的L 型函数,a 是一个常数,求证:函数()yf x a =+也是L 型函数;(3)设函数()f x 是定义在[]0,1上的L 型函数,其L 常数(]0,1K ∈,且()f x 的值域也是[]0,1,求()f x 的解析式.6参考答案一、填空题 1.1−; 2.23π; 3. 1−; 4. 1−; 5.{}1; 6.1a >; 7. 12a −<<; 8.()3,+∞; 9.103a a a −; 10.1,2 +∞;11. {[]211,−−∪−; 12.;5443,11. 已知函数()21,02,0x a x x f x x ax x ++−>= −+≤ 的最小值为1a +,则实数a 的取值范围为______.{[]211,−−∪−(1)若0…a −,即0…a 时,()21,0121,1,2,0……a x f x x a x x ax x +< =+−> −+()f x ∴在(]0,−∞上单调递减,最小值为()02f =,在()0,+∞上最小值为1a +,故只需21…a +即可,解得01剟a ;(2)若01…a <−,即10…a −<时,则()221,01,121,12,0………x a x aa a x f x x a x x ax x −−+<− +−<<=+− −+ ()f x ∴在(]0,−∞上先减后增,最小值为2224a a f=−,在()0,+∞上最小值为1a +, 故只需2214…a a −+即可,解得22a −−−+又10,10剟a a −<∴−<, (3)若1a −>,即1a <−时,()221,011,1,21,2,0………x a x a x a f x x a x a x ax x −−+< −−<<−= +−− −+()f x ∴在(]0,−∞上先减后增,最小值为2224a a f=−,()f x 在()0,+∞上的最小值为10a −−>7而()f x 的最小值为10a +<,故只需令2214a a −=+即可,解得2a =−−2a =−+舍),综上,a的取值范围是{[]211,−−∪−.故答案为:{[]211,−−∪−.12. 已知函数()()2,f x x g x ax x ==−,其中0a >,若对任意的[]11,3x ∈,总存在[]21,4x ∈,使得()()()()1212f x f x g x g x =成立,则实数a 的取值范围是______.5443,依题意,()()()()1212f x f x g x g x =,可等价于()()()()1212f x g x g x f x =,令()()221,11x ax xh x m x ax ax x ax x −====−−−则问题等价于对任意的[]113x ,∈,总存在[]214x ,∈,使得()()1h x m x =成立,其中0a >, 所以()h x 的值域是()m x 的值域的子集,又当[]0,1,3a x >∈时,()[]()110131311h x ,a ,a a a ∈∉−− −−当[]0,1,4a x >∈时,()[]141m x a ,a ∈−−,所以11311411a a a a ≥− − ≤− −(1),依题意可知,1a −与31a −同号,当1a >时,解(1)式可得,5443a ,∈;当103a <<时,此时(1)式无解.综上,5443a , ∈ ;故答案为:5443,.二、选择题13.D ; 14.A ; 15. D ; 16. B 15. 已知函数()2,,x x f x x x = 为无理数为有理数,有下列两个命题:8①()f x 的值域为R ;②对任意正有理数a ,函数()()g x f x a =−存在奇数个零点;则下列判断正确的是( ) A .①②均为真命题B .①②均为假命题C .①为真命题②为假命题D .①为假命题②为真命题D由于()f x 的值域为R ,故(1)为假命题;当0…a 时,()()0g x f x a =−=,即()f x a =,此时方程无解,所以()g x 没有零点;当0a >时,()()0g x f x a =−=,即()f x a =,此时方程有2个解,即()g x 有2个零点,故(2)为假命题.16. 已知函数()2f x x ax b =++,若不等式()2f x ≤在[]1,5x ∈上恒成立,则满足要求的有序数对(),a b 有( )A .0个B .1个C .2个D .无数个B若不等式()2…f x 在[]1,5x ∈上恒成立,则必须满足()()()()()()212212,1232,2932,2,25222552,3f a b f a b f a b −≤≤−≤++≤−≤≤−≤++≤−≤≤−≤++≤ 即由()()212,12932,2a b a b −≤−−−≤ −≤++≤ ,两式相加,得482462,剟剟a a −+⇒−−(4), 再由()()5232932,2252,a b a b −≤−−−≤ −≤++≤ 两式相加,得41624106剟剟a a −+⇒−−(5), 结合(4),(5)两式可知,6a =−,代入不等式得()()()252,292,25213,2b b b −≤−+≤−≤−+≤−≤−+≤ 解得7b =,经检验,当6,7a b =−=时,()()226732f x x x x −+−−,9则()()()()()152,32max min f x f f f x f =====−满足()2…f x 在[]15x ,∈上恒成立,综上,满足要求的有序数对()a,b 为()67,−,共一个. 故选:B . 三、解答题17.(1)2x = (2)1x =18.(1)证明略 (2)13t ≥19.(1)()2060Q x x =−−+ (2)441 20. 已知函数()(](),,123,1,22x x x f x x x ∈−∞= +∈−(1)写出()f x 的单调区间以及在每个单调区间上的单调性(无需证明): (2)解不等式()20ff x +<;(3)若()12,,2x x ∈−∞满足()()12f x f x =,且12x x ≠,求证:122x x +<.见解析(1)递增区间(],1−∞;递减区间[)1,2和[)2,+∞;(2) 由题意210,11厔?x x −−, ①[]10x ,∈−,不等式()20f f x +<,即22120x x −−<,解得x <x >,所以1x , ∈−− ; ②(]01x ,∈,不等式()20ff x +<,即22120x x −+<,解得x ∈∅;综上,1x , ∈−− ;10(3)证明:函数()(](),123,122x x x ,f x x ,x ∈−∞= +∈ −的大致图象如图, 当(]1x ,∈−∞时,函数单调递增,当()12x ,∈时,函数单调递减,所以若()12,2x x ,∈−∞满足()()12f x f x =,则1212x x <<<,由图象知, ①若10…x ,则显然122x x +<;②若10x >,要证明122x x +<,则要证212x x <−,注意到21,21x x −>,且()f x 在()12,递减,则可证明()()212f x f x >−, 因为()()12f x f x =,则可证明()()112f x f x >−, 构造函数()()()2F x f x f x −−,()01x ,∈,则()223F x x x=−−,任取12,x x ,使1201x x <<<,则 ()()()()()()()2112121212121212121222222,2x x F x F x x x x x x x x x x x x x x x x x −−=+−−=+−+=−+−1201x x <<<因为所以12120,02x x x x −<<+<()121212222,0x x x x x x >+−< 所以()()12121220,x x x x x x−+−<即()()()()12120,F x F x F x F x −<<所以()F x 在()0,1上单调递减,又因为()()()1110,F f f =−=所以当()01x ,∈时,()()10F x F >=, 即()()2f x f x >−,所以()()212f x f x >−,从而122x x +<,得证.21.(12分)设函数()f x 定义域为D ,如果存在常数K 满足:任取12,x x D ∈,都有()()1212f x f x K x x −≤−,则称()f x 是L 型函数,K 是这个L型函数的L 常数.11 (1)判断函数()[]2,1,2f x x x =∈−是不是L 型函数,并说明理由;如果是,给出一个L 常数;(2)设函数()y f x =是定义在区间[],m n 上的L 型函数,a 是一个常数,求证:函数()y f x a =+也是L 型函数;(3)设函数()f x 是定义在[]0,1上的L 型函数,其L 常数(]0,1K ∈,且()f x 的值域也是[]0,1,求()f x 的解析式.(1)是,4K ≥;(2)见解析;(3)(),01f x x x =≤≤或()1,01f x x x =−≤≤;(1)定义域内任取12,x x ,221212x x K x x −≤−。
初中七年级上册语文12月份月考试卷(含答案及详解)
隔了几天,李嫂在楼下叫道:“猫,猫!又来吃鸟了。”同时我看见一只黑猫飞快地跳过露台、嘴里衔着一只黄鸟。我开始觉得我是错了!
我心里十分难过,真的,我的良心受伤了,我没有判断明白,便妄下断语,冤枉了一只不能说话辩诉的动物。想到它的无抵抗的逃避,益使我感到我的暴怒,我的虐待,都是针,刺我的良心的针!
我很想补救我的过失,但它是不能说话的,我将怎样地对它表白我的误解呢?
两个月后,我们的猫忽然死在邻家的屋脊上。我对于它的亡失,比以前两只猫的亡失,更难过得多。
我永无改正我的过失的机会了!
自此,我家永不养猫。
5. 根据提示,简洁的语言概括“芙蓉鸟事件”的发展过程。
买鸟——( )——被疑——( )——受罚——真相(每空限2字)
【7题详解】
要求学生仔细阅读文本,结合文本中心内容分析。解答此题关键要明白安排详略对于表现中心的作用。所有材料都要为突出深化中心服务,因为冤死第三只猫以后,作者悔恨愧疚的情感最为强烈,也最能表现作者对于无辜弱小生命的重视,所以重点写第三只猫。前两只猫给第三只猫做铺垫。所以不能删去前两只猫的情节。
【8题详解】
二、阅读(33分)
阅读下面的文字,完成下列小题。
冬天的早晨,门口蜷伏着一只很可怜的小猫,毛色是花白的,但并不好看,又很瘦。它伏着不去。我们如不取来留养,至少也要为冬寒与饥饿所杀。张妈把它拾了进来,每天给它饭吃。但大家都不大喜欢它,它不活泼,也不像别的小猫之喜欢游玩,好象是具有天生的忧郁性似的,连三妹那样爱猫的,对于它,也不加注意。如此的,过了几个月,它在我家仍是一只若有若无的动物,它渐渐地肥胖了,但仍不活泼。大家在廊前晒太阳闲谈着时,它也常来蜷伏在母亲和三妹的足下。三妹有时也逗着它玩,但并没有对于前几只猫那样感兴趣。有一天,它因夜里冷,钻到火炉底下去,毛被烧脱好几块,更觉得难看了。
山东省聊城市阳谷县实验中学2022-2023学年九年级上学期第二次月考(线上)物理试题
阳谷实验中学2022-2023学年度九年级物理12月月考试卷注意事项:1.答题前填写好自己的姓名、班级、考号等信息2.请将答案正确填写在答题卡上第I卷(选择题)一、单选题(每小题3分,共30分)1.在国际单位制中,电功率的单位是()A.kW·h B.W C.J D.A2.下列说法中正确的是()A.电流做功过程就是电能转化为内能的过程B.电功率反映电流做功的快慢C.用电器消耗电能越多电功率就一定越大D.用电器的电功率越大做功一定越多3.如图所示,对于电能表面板上的一些参数的理解,下列说法正确的是()A. 此表是测量电功率的仪器B. 此时电能表的读数为586.6JC. “10(20)A”中的“20A”是指这个电能表中通过的电流是20AD. “720r/(kW·ℎ)”是指电路中每消耗1千瓦时电能,转盘转过720转4、有三个铭牌均为“220V 60W”的用电器,其中一个是电风扇,一个是白炽灯,另一个是电热器,使它们都在额定电压下工作相同的时间。
下列说法中正确的是()A.电风扇消耗的电能最多B.白炽灯最亮,说明其消耗的实际功率最大C.电热器产生的热量最多D.三者消耗的实际电功率一样大,产热量一样多5.如图甲所示的两个电流表均为学校实验室里常用的电流表(如图乙所示).闭合开关后,两电流表的指针都正常偏转且偏转角度相同,此时灯L1和L2的所消耗的电功率P1和P2的比值为()A.4:1B.1:4C.5:1D.1:56.据如图所示的两盏白炽灯铭牌可知()A.甲灯一定比乙灯亮B.正常发光时,甲灯的电阻大于乙灯的电阻C.正常发光时,甲灯消耗的电功率是乙灯电功率的4倍D.正常发光时,甲灯消耗的电能是乙灯消耗电能的4倍7.现有“6V 3W”的灯泡L1和“6V 6W”的灯泡L2,将他们接入电路中,不考虑灯丝电阻的变化.下列关于两只灯泡的说法正确的是()A.串联后接到12V电源的两端,两灯均能正常发光B.串联工作时,L1和L2两端的电压之比为1:2C.并联工作时,L1和L2中的电流之比为2:1D.并联工作时,L1和L2的功率之比为1:28.如图所示是饭店里常用的一款干手器,其铭牌上标有“220V1000W”的字样,它在工作时,电动机转动的同时还可以吹出热风,下列说法正确的是()A. 干手器的额定功率越大,表示消耗电能越多B. 使用1min,就产生60000J的热量C. 在使用干手器时是电能转化为内能和机械能D. 干手器的电动机和电热丝一定是串联的9.如图甲所示的电路中,电源电压保持不变,R是定值电阻,R1是由半导体材料制成的热敏电阻,其阻值随温度变化的曲线如图乙所示。
七年级英语上册12月月考试卷及答案
七年级英语上册12月月考试卷(总分:150分,考试时间:120分钟)I. 听力(共三节,20小题;每小题1.5分,满分30分)第一节听句子,选图片。
听下面五个句子,从每小题所给的三幅图中选出与句子内容相符的选项。
(每个句子读两遍)第二节听对话,选答案。
听下面七段对话,从每小题所给的A、B、C三个选项中选出正确答案。
(每段对话读两遍)听第1段对话,回答第6小题。
( ) 6. What’s that on the sofa?A. A dog.B. A cat.C. A baby.听第2段对话,回答第7小题。
( ) 7. Where is Jim’s pen pal from?A. China.B. England.C. America.听第3段对话,回答第8小题。
( ) 8. What would Peter like to drink?A. Apple juice.B. Orange juice.C. Milk.听第4段对话,回答第9小题。
( ) 9. Who’s in the photo?A. Mike’s cousin.B. Mike’s brother.C. Mike’s uncle.听第5段对话,回答第10、11小题。
( ) 10. Where does Harry’s mother work?A. In a school.B. In a hospital.C. In an office.( ) 11. What does Harry’s father do?A. A doctor.B. A farmer.C. A cook.听第6段对话,回答第12、13小题。
( ) 12. Where are they?A. On a farm.B. In a restaurant.C. In a hospital.( ) 13. What would the man like to drink?A. Milk.B. Juice.C. Water.听第7段对话,回答第14、15小题。
2022-2023学年福建省泉州市永春第二中学七年级上学期12月月考数学试卷带讲解
∴这个角的度数为 ,
∴这个角的补角的度数为 ,
故答案为: .
【点睛】本题主要考查了余角与补角的计算,熟知余角与补角的定义是解题的关键.
15.如图,一副三角板(直角顶点重合)摆放在桌面上,若∠AOD=150°,则∠BOC等于_________度.
30
【分析】由图象可知,两个三角板直角组成∠AOD,其中∠COB为重合部分,故有∠AOD=∠AOB+∠COD-∠COB,易求得∠COB=30°.
23.如图是某居民小区的一块长为a米,宽为2b米的长方形空地为了美化环境,准备在这个长方形空地的四个顶点处修建一个半径为b米的扇形花台,然后在花台内种花,其余种草.如果建造花台及种花的费用为每平方米100元,种草的费用为每平方米50元.
(1)求美化这块空地共需多少元?(用含有a,b,π的式子表示)
(2)当a=6,b=2,π取3.14时,美化这块空地共需多少元?
4.已知 , 是2的相反数,则 的值为()
A. B.3C. 或3D. 或
D
【分析】先分别求出a、b的值,然后代入 计算即可.
【详解】∵ , 是2的相反数,
∴ 或 , ,
当 时, ;
当 时, ;
综上, 的值为 或 ,
故选:D.
【点睛】本题考查了绝对值的意义、相反数的意义及求代数式的值,熟练掌握绝对值和相反数的意义是解答本题的关键.绝对值等于一个正数的数有2个,它们是互为相反数的关系.
10.如果∠α和∠β互补,且∠α<∠β,则下列表示∠α的余角的式子中:①90°﹣∠α;②∠β﹣90°;③ (∠α+∠β);④ (∠β﹣∠α).其中正确的有( )
A.1个B.2个C.3个D.4个
江苏省苏州中学2022-2023年 12月上学期高一物理12月月考试卷
江苏省苏州中学2022-2023学年度第一学期质量评估高一物理本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,满分100分,考试时间75分钟。
所有答案均写在答题纸上。
第I 卷(选择题,共40分)一、 单项选择题(本题共10小题,每小题4分,共计40分. 每小题只有一个选项符合题意 )1.如图所示,A 和B 两个物体通过一轻弹簧固定连接,两物体的质量均为2kg ,开始时,系统静止,弹簧的劲度系数为100N/m ,在竖直向上的拉力F 作用下,B 物体缓慢向上运动,取重力加速度大小g =10m/s 2,弹簧始终在弹性限度内。
当B 物体缓慢上升0.4m 时,地面对A 物体的支持力大小为( )A .0B .50NC .100ND .150N2.物体A ,B 都静止在同一水平面上,它们的质量分别为A m 和B m ,与水平面间的动摩擦因数分别为A μ和B μ。
用水平拉力F 分别拉物体A 和B ,所得加速度a 与拉力F 的关系图象如图中直线A ,B 所示。
则有( )A .AB μμ=,A B m m <B .A B μμ>,A B m m <C .可能A B m m =D .A B μμ<,A B m m >3.甲、乙两质点运动的位移—时间图像如图中a 、b 所示,不考虑二者碰撞,则下列说法中正确的是( )A .甲做曲线运动,乙做直线运动B .乙质点在23~t t 时间内做匀速直线运动C .14~t t 时间内甲、乙两质点的位移相同D .甲质点在24~t t 时间内一直沿同一方向运动4.某科学小组研制了一种探测器,其速度大小可随运动情况进行调节。
如下图所示,在某次实验中,该探测器从原点一直沿x 轴正向移动,且其速度与位移成反比,已知探测器在A 、B 两点的速度分别为4m/s 和2m/s ,O 点到B 点的位移为4m ,则探测器从A 点运动到B 点的时间为( )A .3s 8B .1s 8C .3s 4D .2s 35.如图所示,用一根轻质细绳将一质量均匀的球体悬挂在竖直木板的A 点,轻绳与木板之间的夹角为30α=︒。
邢台市九年级上学期数学12月月考试卷
邢台市九年级上学期数学12月月考试卷姓名:________ 班级:________ 成绩:________一、单选题 (共8题;共16分)1. (2分)下列图案是轴对称图形的有()个A . 1个B . 2个C . 3个D . 4个2. (2分)关于x的一元二次方程(a﹣1)x2+x+|a|﹣1=0的一个根为0,则实数a的值为()A . 1B . -1C . 0D . ﹣1或13. (2分) (2016九上·西湖期末) 如图,在Rt△ABC中,CD是斜边AB上的中线,已知CD=2,AC=3,则sinB 的值是()A .B .C .D .4. (2分)如图,点O在MN上,把∠AOB沿着MN的方向平移一定距离后得∠CPD.已知∠AOM=25°,∠DPN=50°,则∠AOB的大小是()A . 75°B . 105°C . 130°D . 155°5. (2分)(2019·桂林模拟) 下列说法:①平方等于其本身的数有0,±1;②32xy3是4次单项式;③将方程中的分母化为整数,得=12;④平面内有4个点,过每两点画直线,可画6条、4条或1条.其中正确的有()A . 1个B . 2个C . 3个D . 4个6. (2分)如图,这是圆桌正上方的灯泡(看作一个点)发出的光线照射到桌面后在地面上形成(圆形)的示意图. 已知桌面直径为1.2米,桌面离地面1米. 若灯泡离地面3米,则地面上阴影部分的面积为()A . 0.36π米2B . 0.81π米2C . 2π米2D . 3.24π米27. (2分)若我们把十位上的数字比个位和百位上的数字都大的三位数称为凸数,如:786,465.则由1,2,3这三个数字构成的,数字不重复的三位数是“凸数”的概率是A .B .C .D .8. (2分) (2019九上·长春月考) 函数y=ax-2 (a≠0).与y=ax2(a≠0)在同一平面直角坐标系中的图象可能是()A .B .C .D .二、填空题 (共7题;共7分)9. (1分) (2018九上·通州期末) ⊙ 的半径为1,其内接的边,则的度数为________.10. (1分)已知:如图ΔABC中,D、E、F分别是AB、AC、BC的中点.(1)若AB=10cm,AC=6cm,则四边形ADFE的周长为________ cm,(2)若ΔABC周长为6cm,面积为12cm2,则ΔDEF的周长是________ cm,面积是________ cm2 .11. (1分)下列说法:①频率是反映事件发生的频繁程度,概率反映事件发生的可能性大小;②做n次随机试验,事件A发生m次,则事件A发生的概率一定等于;③频率是不能脱离具体的n次试验的实验值,而概率是具有确定性的不依赖于试验次数的理论值;④频率是概率的近似值,概率是频率的稳定值.其中正确的是________(填序号).12. (1分)(2019·哈尔滨模拟) 某扇形的面积为6π,弧长为3π,此扇形的圆心角的度数为________.13. (1分) (2019九上·凤山期中) 二次函数y=ax2+bx+c(a≠0)的图象如图所示,根据图象回答下列问题:(1)点B的坐标为________;(2) y随x的增大而减小的自变量x的取值范围为________;(3)方程ax2+bx+c=0的两个根为________;(4)不等式ax2+bx+c<0的解集为________.14. (1分) (2018八上·萧山月考) 如图, ∠A=60°, ∠B=30°, ∠C=35°,则∠D+∠E=________°15. (1分)在平面直角坐标系中,M、N、C三点的坐标分别为,,,点A为线段MN上的一个动点,连接AC,过点A作交y轴于点B,当点A从M运动到N时,点B随之运动,设点B的坐标为,则b的取值范围是________.三、解答题 (共13题;共109分)16. (1分)如图,在平面内将Rt△ABC绕直角顶点C逆时针旋转90°得到Rt△EFC.若AB= ,BC=1,则线段BE的长为________.17. (5分)综合题。
中山市九年级上学期数学12月月考试卷
中山市九年级上学期数学12月月考试卷姓名:________ 班级:________ 成绩:________一、单选题 (共6题;共12分)1. (2分)(2015·江岸) 方程ⅹ(ⅹ-1)=0的解是()A . x=0B . x=1C . x= 0或ⅹ=1D . x=0和ⅹ=12. (2分)如图,已知顶点为(﹣3,﹣6)的抛物线y=ax2+bx+c经过点(﹣1,﹣4),则下列结论中错误的是()A . b2>4acB . ax2+bx+c≥﹣6C . 若点(﹣2,m),(﹣5,n)在抛物线上,则m>nD . 关于x的一元二次方程ax2+bx+c=﹣4的两根为﹣5和﹣13. (2分)下面图形不是轴对称图形的是()A . 等腰三角形B . 菱形C . 平行四边形D . 正六边形4. (2分)下列命题中,正确的是()①顶点在圆周上的角是圆周角;②圆周角的度数等于圆心角度数的一半;③90°的圆周角所对的弦是直径;④不在同一条直线上的三个点确定一个圆;⑤同弧所对的圆周角相等。
A . ①②③B . ③④⑤C . ①②⑤D . ②④⑤5. (2分) (2019九上·日照开学考) 下列说法正确的是()A . 从1,2,3,4,5中随机取出一个数,取得偶数的可能性比取得奇数的大B . 若甲组数据的方差S甲2=0.31,乙组数据的方差S乙2=0.02,则甲组数据比乙组数据稳定C . 数据﹣2,1,3,4,4,5的中位数是4D . 了解重庆市初中学生的视力情况,适宜采用抽样调查的方法6. (2分) (2019九上·寻乌月考) 如图,点 A,B 的坐标分别为(1,4)和(4,4),抛物线 y=a(x﹣m)2+n 的顶点在线段 AB 上运动(抛物线随顶点一起平移),与 x 轴交于 C、D 两点(C 在 D 的左侧),点 C 的横坐标最小值为﹣3,则点 D 的横坐标最大值为()A . ﹣3B . 1C . 5D . 8二、填空题 (共6题;共11分)7. (1分)(2017·赤壁模拟) 对于二次函数y=x2﹣2mx﹣3,有下列结论:①它的图象与x轴有两个交点;②如果当x≤﹣1时,y随x的增大而减小,则m=﹣1;③如果将它的图象向左平移3个单位后过原点,则m=1;④如果当x=2时的函数值与x=8时的函数值相等,则m=5.其中一定正确的结论是________.(把你认为正确结论的序号都填上)8. (5分) (2018九上·阆中期中) 已知关于x的方程x2-6x+k=0的两根分别是x1 , x2 ,且满足+=3,则k的值是________.9. (1分) (2016九上·宁海月考) 把底面直径为6㎝,高为4㎝的空心无盖圆锥纸筒剪开摊平在桌面上,摊平后它能遮住的桌面面积是________㎝210. (2分) (2020七下·江阴月考) 如图,Rt△AOB和Rt△COD中,∠AOB=∠COD=90°,∠B=40°,∠C =60°,点D在边OA上,将图中的△COD绕点O按每秒10°的速度沿顺时针方向旋转一周,在旋转的过程中,在第________秒时,边CD恰好与边AB平行.11. (1分)(2019·郫县模拟) 一枚质地均匀的正六面体骰子,六个面分别标有1、2、3、4、5、6,连续投掷两次.记两次朝上的面上的数字分别为m、n,若把m、n分别作为点P的横坐标和纵坐标,则P(m,n)在双曲线y= 上的概率为________.12. (1分)(2020·广东模拟) 对于一个函数,如果它的自变量x与对应的函数值y满足:当-1≤x≤1时,-1≤y≤1,则称这个函数为“闭函数”.例如:y=x,y=-x均是“闭函数”.已知y=ax2+bx+c(a≠0)是“闭函数”,且抛物线经过点A(1,-1)和点B(-1,1),则a的取值范围是________.三、解答题 (共11题;共85分)13. (2分)如果方程与方程有一个公共根是3,求的值,并分别求出两个方程的另一个根.14. (2分) (2019八下·柯桥期末) 如图,E,F是正方形ABCD的对角线AC上的两点,且AE=CF.(1)求证:四边形BEDF是菱形;(2) )若正方形ABCD的边长为4,AE=,求菱形BEDF的面积.15. (10分)今年5月份,我市某中学开展争做“五好小公民”征文比赛活动,赛后随机抽取了部分参赛学生的成绩,按得分划分为A,B,C,D四个等级,并绘制了如下不完整的频数分布表和扇形统计图:等级成绩(s)频数(人数)A90<s≤1004B80<s≤90xC70<s≤8016D s≤706根据以上信息,解答以下问题:(1)表中的x=________;(2)扇形统计图中m=________,n=________,C等级对应的扇形的圆心角为________度;(3)该校准备从上述获得A等级的四名学生中选取两人做为学校“五好小公民”志愿者,已知这四人中有两名男生(用a1 , a2表示)和两名女生(用b1 , b2表示),请用列表或画树状图的方法求恰好选取的是a1和b1的概率.16. (10分) (2019七下·普陀期中) 按下列要求画图并填空:(1)过点B画出直线AC的垂线,交直线AC于点D________,那么点B到直线AC的距离是线段________的长.(2)用直尺和圆规作出△ABC的边AB的垂直平分线EF,交边AB、AC于点M、N,联结CM________.那么线段CM是△ABC的________ .(保留作图痕迹)17. (2分) (2019八上·昭通期末) 如图,某小区规划在一个长30m、宽20m的长方形ABCD上修建三条同样宽的通道,使其中两条与AB平行,另一条与AD平行,其余部分种花草.要使每一块花草的面积都为78m2 ,那么通道的宽应设计成多少m?18. (2分)(2020·通辽) 如图,的直径交弦(不是直径) 于点P ,且.求证:.19. (2分)(2018·常州) 如图,二次函数y=﹣ +bx+2的图象与x轴交于点A、B,与y轴交于点C,点A的坐标为(﹣4,0),P是抛物线上一点(点P与点A、B、C不重合).(1) b=________,点B的坐标是________;(2)设直线PB与直线AC相交于点M,是否存在这样的点P,使得PM:MB=1:2?若存在求出点P的横坐标;若不存在,请说明理由;(3)连接AC、BC,判断∠CAB和∠CBA的数量关系,并说明理由.20. (10分)如图,⊙O的直径AB=4,∠ABC=30°,BC交⊙O于D,D是BC的中点.(1)求BC的长;(2)过点D作DE⊥AC,垂足为E,求证:直线DE是⊙O的切线.21. (15分) (2017八下·丛台期末) 已知y关于x的一次函数y=(2m2﹣32)x3﹣(n﹣3)x2+(m﹣n)x+m+n.(1)若该一次函数的y值随x的值的增大而增大,求该一次函数的表达式,并在如图所示的平面直角坐标系中画出该一次函数的图象;(2)若该一次函数的图象经过点(﹣2,13),求该函数的图象与坐标轴围成的三角形的面积.22. (15分)(2019·贵阳) 如图,已知AB是⊙O的直径,点P是⊙O上一点,连接OP,点A关于OP的对称点C恰好落在⊙O上.(1)求证:OP∥BC;(2)过点C作⊙O的切线CD,交AP的延长线于点D.如果∠D=90°,DP=1,求⊙O的直径.23. (15分)(2017·新乡模拟) 抛物线y=ax2+c与x轴交于A,B两点,顶点为C,点P为抛物线上,且位于x轴下方.(1)如图1,若P(1,﹣3),B(4,0).①求该抛物线的解析式;②若D是抛物线上一点,满足∠DPO=∠POB,求点D的坐标;(2)如图2,已知直线PA,PB与y轴分别交于E、F两点.当点P运动时,是否为定值?若是,试求出该定值;若不是,请说明理由.参考答案一、单选题 (共6题;共12分)1-1、2-1、3-1、4-1、5-1、6-1、二、填空题 (共6题;共11分)7-1、8-1、9-1、10-1、11-1、12-1、三、解答题 (共11题;共85分)13-1、14-1、14-2、15-1、15-2、15-3、16-1、16-2、17-1、18-1、19-1、19-2、19-3、20-1、20-2、21-1、21-2、22-1、22-2、23-1、23-2、。
江苏省南京市2023_2024学年高一上册12月份月考英语试题(附答案)
江苏省南京市2023_2024学年高一上册12月份月考试卷听力略第2部分阅读理解(共两节满分50分)第1节(共15题;每小题2.5分,满分37.5分)阅读下列短文,从每题所给的A,B,C,D四个选项中选出最佳选项。
A(广东省江门市鹤山市第一中学2023_2024学年高一上册第二阶段考)B(甘肃省部分学校2023_2024学年高三上册11月英语试题)add in extra protein. “It’s not good or bad food; it’s just fuel,” she said. “When you look at it from an addition standpoint instead of a restriction standpoint, it’s a healthier approach to fueling yourself.”4. What does Dr. Colin Carriker most probably agree with?A.Gym goers like processed food best.B.Visceral fat causes less harm to people. C.People can look thin but still be unhealthy.D.People exercising regularly are actually fit.5. Which is closest in meaning to “hard nut” underlined in paragraph 3?A.Disorder.B.Target.C.Trend.D.Challenge.6. What might happen to people who often eat processed food?A.They have little motivation or drive to exercise.B.They are enthusiastic about intense workouts.C.They obtain much more energy to burn calories.D.They work productively due to being energetic.7. What does Derocha probably suggest?A.Staying away from junk food.B.Changing your views about food.C.Being active to keep energetic.D.Fueling yourself with strict dietsC(京市第六十六中学2023_2024学年高一上册期中)A new artificial intelligence (AI) tool called ChatGPT has excited the Internet community with its superhuman abilities to solve math problems, produce college articles and write research papers. Some educators are warning that such Al systems will change the world of learning, teaching, and research, for better or worse.Ethan Mollick, a professor at the University of Pennsylvania’s Wharton School of Business, sees its benefits as a learning partner. He has used it as his own teacher’s assistant, for help with preparing a lecture and grading instructions for MBA students. “You can ask it to find a mistake in your writing and correct it and tell you why you got it wrong,” he said. “It’s really amazing.”But the superhuman assistant has its limitations (局限). ChatGPT was created by humans, after all. OpenAI has trained the tool using a large dataset of real human conversations. It sometimes lies to you, with confidence. There have been situations in which ChatGPT won’t tell you when it doesn’t have the answer.That’s what Teresa Kubacka, a data scientist based in Zurich, Switzerland, found when she experimented with the language model. “I asked it about something that I thought that I knowdoesn’t exist (存在) so that I can judge whether it actually also has the idea of what exists and what doesn’t exist.” she said. ChatGPT produced an answer so specific sounding, backed with citations (引文), that Kubacka had to find out whether the made-up thing was actually real. “This is where it becomes kind of dangerous,” she said.ChatGPT doesn’t produce good science, says Oren Etzioni, the founding CEO of the Allen Institute for AI. But he sees ChatGPT’s appearance as a good thing. He sees this as a moment for review. “ChatGPT is just a few days old, I like to say,” said Etzioni. “It’s giving us a chance to understand what he can and cannot do and to begin the conversation of ‘What are we going to do about it?’”8. How did Ethan Mollick feel about ChatGPT?A.It could be used in many different fields.B.It was popular with university students.C.It would replace teachers’ assistants.D.It was advantageous to him.9. What did Teresa Kubacka’s experiment with ChatGPT find?A.The Al tool is not dependable sometimes.B.The Al tool always gives wrong answers.C.The Al tool does not always answer questions.D.The Al tool gives dangerous guidance sometimes.10. What does Oren Etzioni mean by saying those words in the last paragraph?A.It is too early to discuss ChatGPT’s limitations.B.ChatGPT is open for review and suggestions.C.ChatGPT is worth praising for its superhuman abilities.D.It takes time to see whether ChatGPT works well or not.11. Which of the following shows the organization of the text?A.B.C.D.D(21-22高一下·江西萍乡·期中)I was born in a poor community on the north side of Boston, US, raised by a single mother who didn’t finish 3rd grade, lived each day on food stamps and attended what the media called “the most dysfunctional (功能失常的) public school district”. Not many people expected much of me, so I had to expect something of myself.On my 13th birthday, I bought a poster of Harvard to hang in my room. Being at Harvard became what dreamt about. Even when my electricity was cut off and I woke up at 5:30 am to pitch blackness, I knew that my poster of Harvard was still hanging only two feet away from me.Reminding myself of my goal each day made it easy to say no to the same choices I saw my peers making, because those paths wouldn’t have gotten me closer to my goal. Even poverty (贫穷) could not take away my power to decide what I choose to do with my day. The poster gave me the courage to cold email about 50 Harvard students so I could ask for feedback on my application essays; it gave me the energy to study just one more hour on my SATs when my friends were asleep; and it gave me the determination to submit just one more scholarship application when 180 others had already turned me down.Every day I could feel myself getting closer and closer to my goal as my writing got better, my SAT score increased, and my scholarship checks started coming in. Finally, an email arrived from Harvard. The first word was “Congratulations!”. A month later, Harvard flew me up to visit the campus where for the first time I stepped onto my dreaming land.Who you are today is the result of the decisions you made yesterday, and who you will be tomorrow will be the result of the choices you make today. Who do you want to be tomorrow?12. What can we learn about the author from the first paragraph?A.He experienced disability.B.He had high expectation of himself.C.He accepted special education.D.He grew up in a happy family.13. What efforts did the author make to achieve his goal?A.He learnt from his peers from time to time.B.He often wrote feedbacks on others’ essays.C.He spent more time preparing for the exams.D.He consulted his teacher when having problems.14. Which can best describe the author’s character?A.Determined and hardworking.B.Generous and selfless. C.Intelligent and humorous.D.Courageous and friendly.15. Which of the following can be the main idea of the text?A.Failure is the mother of success.B.Perseverance can make your dream come true.C.The longest journey begins with the first step.D.Your success in life lies in your hardship in the past.第2节(共5小题;每小题2.5分,满分12.5分)Easy Solutions to Stress(22-23高一下·浙江湖州·期末)第3部分语言运用(共两节,满分30分)第1节(共15小题,每小题1分,满分15分)阅读下面短文,从短文后各题所给的A,B,C,D四个选项中选出最佳选项。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
东昌东校2013学年度第一学期九年级英语月考练习卷(满分: 150 分,考试时间:100分钟)(本卷有十大题,共99小题。
试题均采用连续编号。
所有答案务必按照规定在答题纸上完成,做在试卷上不给分。
)Part 1 Listening (第一部分 听力)I. Listening Comprehension (听力理解): (共30分)A. Listen and choose the right picture. ( 根据你听到的内容,选出相应的图片。
) ( 6分)A B C DE F G H 1. ______ 2. ______ 3. ______ 4. ______ 5. ______ 6. ______B. Listen to the dialogue and choose the best answer to the question you hear (根据你听到的对话和问题,选出最恰当的答案): (共8分) 7. A) The first floor.B) The second floor. C) The third floor. D) The fourth floor. 8. A) Drinks and snacks.B) Fruit and drinks.C) Milk and bread.D) Fruit and vegetables.9.A) At 5:30.B) At 5:45.C) At 7:30. D) At 7:45. 10. A) Once.B) Twice.C) Three times.D) Four times.11. A) By underground. B) By bike.C) By bus.D) By car.12. A) At a cinema. B) In a park.C) At a hotel.D) At a post office.13. A) Her old friend. B) Her cousin. C) Her new boss.D)Hernewsecretary.14 A) Because she is worrying about her son.B) Because she is not feeling well today. C) Because her husband is sick at home.D) Because she has made many typingmistakes.C. Listen to the passage and tell whether the following statements are true or false (判断下列句子是否符合你听到的短文内容,符合的用“T ”表示,不符合的用“F ”表示): (共6分)15. There was an important problem with one of the main computer in Smith ’s company. 16. A child answered Smith ’s calling.17. Neither the boy ’s father nor his mother was at home.18. Mr Smith thought leaving such a small child at home alone was very common. 19. The policeman was busy talking with the boy ’s parents and a fireman. 20. The low voice made Mr Smith get more and more surprisedD. Listen to the dialogue and complete the following sentences (听对话,完成下列内容。
每空格限填一词):(共10分)● Martin didn't want to live on campus; ____21___ ____22___ he want to take the bus. ● Martin learned very quickly, and received his driver's license just before his ____23_______24___.● Finally he caught sight of a red Blue Bird. He had a testing drive on the ____25_______26___, and called out,●Martin wondered why his father chose that seat, for his father always enjoyed looking____27___ ____28___ .●Dad replied, "Do you remember what you did to me all those years when Itook you toand from school?”Martin said nothing, ____29___ ____30___.Part 1 Vocabulary and grammar (第一部分 词汇和语法)I. Choose the best answer (选择最恰当的答案): (共20分)31. When the soldier found that the Greeks had gone, he hurried down the stairs of the citywall, two at _______ time. A) a B) an C) the D) /32. The customer was angry_______ the boss for her bad service of Taobao on November11. A) in B) at C) with D) about33. A musician shot and killed three people in a three story building in Williamsburg,brooklyn, New York. Finally, he killed _______. The police still do not know why he did that. A) he B) him C) his D) himself34. Damin usually sells some of the fish and shares _______ with his twelve cormorants.A) other B) another C) the other D) the rest35.When people get_______, their short-term memory becomes worse. (bad)A. oldB. oldestC. olderD. elder36.Steven completed the science test _______ in our class yesterday.A) most quickly B) more quickly C) less quickly D) quickly37.________funny the monkeys are! They are jumping up and down the trees excitedly.A) How B) What C) What a D) What an38.Look! Our classroom is tidy and bright. It _______ be Tom who has helped clean theclassroom!A) can B) must C) need D) ought39.You won‘t understand how to use the software of _______ you read the instructions carefully.A) unless B) if C) when D) because40.After the interview the reporter decided_________ an article on school buses in China.A) write B) to write C) wrote D) writing41.They usually have lunch at school, ________?A) haven‘t they B) do they C) don‘t they D) have they42.—Would you like to go and have some coffee with me?—I‘d like to, but my father _______ for me outside now.A) waits B) is waiting C) will wait D) waited43.Many aged people ________ an active part in the Talent Show (达人秀) last year.A) take B) took C) will take D) have taken44.The robbers _______ away long before the police arrived.A) had left B) were leaving C) left D) would leaveually a light _______ on the front of the bamboo raft when evening comes. This helpsDamin see better.A) hanged B) hung C) is hanged D) is hung46.Steven got home late last night and found that someone had _______ the house. An I-phone 5Swas stolen.A) broken off B) broken out C) broken into D) broken down47.– I think Shanghainese food is better than Sichuan food.–_______. In my opinion, Sichuan food is better.A. I don‘t agree.B. I hope not.C. I hope so.D. I agree.48.– Sorry, I didn‘t return your book on time.–_______A) I agree with you. B) That‘s a good idea C) You‘re welcome. D) It doesn‘t matter..49.People will succeed in putting astronauts on the moon. The underlined word pronounces―______‖.A. /s✈k'si:d /B. /sək's♏♓d /C. /sək'si:d /D. /'səksi:d/50.I /ə'pɔlədʒaiz♎ / to John for losing his book. The underlined part spells ―______‖.A. apologizeB. apologizesC. apologyD. apologizedII. Complete the following passage with the words and phrase in the box. Each can only be used once (): (8分)musicians and write about them for her magazines. When she was a teenager, Anna read all the magazines she could find. She wrote 51. ________ for her school magazine and dreamed that one day she would be a real journalist (记者).Now she has a very exciting job. “It’s wonderful,” she says. “I get paid to go to concerts and parties to 52. ________ pop stars. Most young people would love my job.”Before she started to work for the magazine, Anna did a two-year course (课程) in journalism and business. “I’m 53. ________ I did the course,”says Anna. “It taught me a lot.”“All my friends at school laughed when I told them I wanted to be a pop writer. They said IReading is like reading newspapers and 55. ________ enjoy novels or comic books. My favourite books are those about the lives of great people. Reading them always gives me a lot of ideas on how to make my own life better.Great people are remembered not because they were handsome or beautiful, but because they did not 56. ________ when their life was difficult. They tried to use every chance to change their life and to make the world better.One good example is Orville and Wilbur Wright, the two brothers who invented the airplane. The plane has made the world into a(n) 57. ________ village. Hard work, not good luck, was the reason why the Wright Brothers could invent this convenient machine and became great people.Whenever I read 58. ________ about great people, I always learn a lot from them and they encourage me to march on (前进).This is why I enjoy reading great people’s lives.III. Complete the sentences with the given words in their proper forms (用括号中所给单词的适当形式完成下列句子): (8分)59.The writer Mo Yan won the 2012 Nobel Prize in Literature(文学)。