北师大版2019-2020学年八年级上学英语期中考试试卷D卷
2019年北师大版高一英语第二学期期中试卷

2019年北师大版高一英语第二学期期中试卷本文从网络收集而来,上传到平台为了帮到更多的人,如果您需要使用本文档,请点击下载按钮下载本文档(有偿下载),另外祝您生活愉快,工作顺利,万事如意!xxxx年北师大版高一英语第二学期期中试卷I..根据句子的意思,写出正确的单词,并注意词的正确形式。
:Europe,Asia,Africa,NorthAmerican,SouthAmerica n,AustraliaandAntarctica.____________whenhesawthefoodonthebrothers’table.5.---whatarethetwoolanguagesincanada?--FrenchandEnglish._______thanbegforfood.’ts________hisparents,sotheykeptaskinghim._______ustotheoldman’shouse,sowehadnotroubleinfindinghim.________andhispoemsarepopularwiththeyouth.________hissadnessinwine._____________.______________thatshecomestoapologisetous._______________fromBritain._________manI’veevermet.__________forhisexcellentstudy.II.根据中文意思完成句子1.__________________yourcompanyislarge,itcanstill__ ________________troublebygrowingtooquickly.即使你们公司很庞大,如果发展太快也会陷入困境的。
_______________toworkbecausehehasa_____________ ___workingwithotherpeople.他很快就安定下来专心工作了,因为他很擅长与人合作。
(北师大版)初中英语八年级上册 Unit 5单元测试试卷02及答案

Unit 5 Helping 单元测试一、单项选择(共15小题;共45分)从下面各题所给选项中,选择最佳选项。
1.(2019·泰安改编)________ energy, please turn off the lights when you leave.A. SaveB. To saveC. SavingD. Saved从下面选项中选出可以替换划线部分的最佳选项。
2. — When did you go abroad?— After graduation. And since then I haven’t returned to my hometown.A. above allB. from then onC. at first从下面各题所给选项中,选择最佳选项。
3. To my ________, he didn’t answer my question.A. surpriseB. surprisedC. surprisingD. joy4. Before you turn off the computer, you must ________ the document.A. saveB. openC. printD. click5. ________ his surprise, he won the first prize.A. ToB. OnC. ForD. With从下面各题所给选项中,选出与所给单词划线部分读音不同的选项。
6. A. bear B. ear C. hear D. near从下面各题所给选项中,选择最佳选项。
7. Before you turn off the computer, you must ________ the document, dear.A. keepB. saveC. stayD. hold8. — Would you please not speak so loudly in ________ public?— Sorry. I will remember to speak in ________ lower voice.A. the; aB. /; aC. the; theD. /; /9. ________, British scientist Steven Hawking opened an account(账号) on China’s Weibo on April 12th.A. To our shameB. To our surpriseC. To our pityD. To our sorry10. Animals are our friends and let’s ________ them.A. learnB. forgetC. killD. save11. — Here’s a present for you. Happy birthday, sweetie! Open it.— Wow! An iwatch? ________ Thank you so much, Dad!A. What a surprise!B. What surprise!C. What a waste!D. What waste!12. To my ________, he passed the exam.A. surpriseB. surprisedC. surprisingD. a surprise13. Sun Yang is well known to many Chinese people ________ his winning in Rio.A. becauseB. sinceC.asD. because of14. — What’s your plan for next year?— I’m going to work harder to ________ money to buy a car.A. borrowB. keepC. saveD. ask for15. I phoned again and again, but there was no ________.A. replyB. questionC. telephoneD. man二、完形填空(共1小题;共30分)阅读下面的短文,掌握其大意,然后从短文后各题所给的选项中,选择最佳选项。
2019-2020学年浙江省嘉兴市北京师范大学南湖附属学校八年级第一学期期中英语试卷.(含解析)

2019-2020学年浙江省嘉兴市南湖区北师大南湖附校八年级第一学期期中考试英语试卷二、完形填空。
阅读下面短文,掌握其大意,然后在各题所给的四个选项中选出一个最佳答案。
Alex was a giraffe. He lived in a zoo with his mum, dad and other giraffe friends. As Alex grew, he___16__his neck was much shorter than the others’. He began to get__17__. But his mother told him that he was __18__. She said it did not matter how short or long his __19__ was.Alex tried not to __20__ his short neck. But as his friends grew taller and taller, his neck _21__ short. Sometimes the other giraffes__22___ him, but his parents told him not to worry. They said that he should be happy with _23__ the way he was. He tried, but he could not even play in some giraffe sports. He was just too _24___.One day, one of the zoo workers came and took Alex away. Alex was afraid. Would he have to leave the zoo just __25__ he didn’t have a long neck? The zoo worker calmed (使镇静) Alex down and gave him some food. He felt__26__. Then he led Alex into another area of the zoo. There was a small __27___ between the two areas. Alex was the only giraffe that could go through it.Soon Alex’s __28__ came to see him. “I told you that you were special.” his mother said. “The zoo has made a place just for __29__ because so many people want to see how special you are!”She was right. Tourists pointed to him and felt___30___. They looked happy to see something so special at the zoo.16 A.believed B.found C.hoped D.agreed17 A.careful B.great C.interested D.worried18 A.fat B.thin C.special mon19 A.leg B.neck C.foot D.hair20 A.go over B.find out C.think about D.look for21 A.stayed B.became C.turned D.felt22 A.looked after B.fell behind ughed at D.heard of23 A.herself B.himself C.themselves D.ourselves24 A.tall B.short C.fat D.thin25 A.after B.when C.because D.before26 A.better B.worse C.sadder D.angrier27 A.box B.hole C.window D.door28 A.grandparents B.parents C.teachers D.friends29 A.him B.you D.me30 A.excited B.angry C.sad D.heavy【答案】BDCBC ACBBC ADBBA【解答】16.考察动词。
北师大版2019-2020学年七年级上学期英语期中十校联考试卷D卷

北师大版2019-2020学年七年级上学期英语期中十校联考试卷D卷姓名:________ 班级:________ 成绩:________一、单项填空。
请从A、B、C、D四个选项中选出可以填入空白处 (共5题;共10分)1. (2分)—Hi, Daniel. How was your trip to Qingdao?—________. The beaches there are very beautiful and we also enjoyed some fresh seafood.A . Not badlyB . Very muchC . Very goodD . So well2. (2分)What time ______ your best friend go to school?A . isB . doC . does3. (2分)—When did Neil Armstrong walk on the moon?—____July 20th,1969.A . InB . AtC . ForD . On4. (2分)The girl is Linda Black. Linda is her ________ name.A . firstB . lastC . familyD . middle5. (2分)- Bad luck! I lost _______ new pen yesterday.- Don't worry. I'll lend _____ to you.A . my; meB . mine; myC . mine; mineD . my; mine二、交际配对。
(共1题;共5分)6. (5分)根据短文内容,从短文后的方框ABCDEFG选项中,选出适当的选项B: Certainly. Go along this street. Turn left into Xingfu Street, and the museum is on your right.A:________B: It's about thirty minutes.A: I see.________B: Yes, you can. A No.103 bus will take you there.A:________B: Over there. Look! The bus is coming.A: Thank you very much.B:________三、完形填空。
北师大版八年级上学期期中考试 附答案

八年级上学期期中考试一、选择题1、以下列各组数据为边长作三角形,其中能组成直角三角形的是 ( )A 、3、5、3B 、4、6、8C 、7、24、25D 、6、12、13 2、在-2)5(-、2π、4.0、71、0 、311 中无理数个数为( )A 、1个B 、2个C 、3个D 、4个3、的算术平方根是( ) A .3 B .-3 C . D . 4、下列式子正确的是( ) A 、 16=±4 B 、±16 =4 C 、2)4(- =-4 D 、±2)4(- =±4 5、在直角三角形中,两边长分别为3和4,则最长边的长度为( ) A .5 B .4 C .5 D .5或4 6、下面平行四边形不具有的性质是( )A 、对角线互相平分B 、两组对边分别相等C 、 对角线相等D 、相邻两角互补7、若平行四边形的周长为28㎝,两邻边之比为4:3,则其中较长的边长为( ) A .8㎝; B .10㎝; C .12㎝; D .16㎝8、平行四边形ABCD 中,∠A 、∠B 、∠C 、∠D 的度数之比有可能是( ) A 、1∶2∶3∶4 B 、2∶2∶3∶3 C 、2∶3∶2∶3 D 、2∶3∶3∶29、下列图形中,既是轴对称图形,又是中心对称图形(通过绕着整个图形的中心旋转180后能与原图重合的图形)的是( )A B C D 10、正方形具有而菱形不一定具有的性质是( )933±A .对角线互相垂直B .对角线互相平分C .对角线相等D .对角线平分一组对角 11、如左图,乙图案变为甲图案,需要用到( ) A .旋转、对称 B .平移、对称 C .旋转、平移 D .旋转、旋转12、已知 , 则 的平方根是( ) A . B . -2 C . D .-4 二、填空题13、144的平方根是 ;64的立方根是 . 14、平行四边形ABCD 中,∠A+ ∠C=100゜,则∠B= 。
2024-2025学年北师大版(2019)八年级科学上册月考试卷507

2024-2025学年北师大版(2019)八年级科学上册月考试卷507考试试卷考试范围:全部知识点;考试时间:120分钟学校:______ 姓名:______ 班级:______ 考号:______总分栏题号一二三四五六总分得分评卷人得分一、单选题(共8题,共16分)1、为了缓解我国北方地区水资源不足的状况而实施的南水北调工程,将主要改变水循环环节中的( )A. 蒸发B. 水汽输送C. 降水D. 地表径流2、14.如图所示的电路中,闭合开关S,当滑动变阻器的滑片P向右移动时,电压表、电流表示数的变化情况是 ( )15.A. 电压表、电流表示数均变大B. 电压表、电流表示数均变小C. 电压表示数变大,电流表示数变小D. 电压表示数变小,电流表示数变大3、下列操作中只发生物理变化的是()A. 将二氧化碳通入水中B. 将二氧化碳通入澄清石灰水中C. 将二氧化碳倾倒入盛有燃着蜡烛的烧杯中D. 将二氧化碳加压降温压缩成干冰4、含有硫的煤,在火炉中如果不完全燃烧,则排放出能污染空气的有毒气体是( )A. 和B.C. COD. 和CO5、通过语言功能建立的条件反射应该是()A. 看到老师走上讲台,同学们马上起立向老师敬礼B. 听到主人唤它的“名字”,小狗就向主人跑过来C. 看到有人突然横穿马路,司机立即刹车停了下来D. 听了老师讲的故事,同学们都忍不住笑了6、如图所示,在探究并联电路中的电流关系时,小明同学用电流表测出A、B、C三处的电流分别为I A=0.4A、I B=0.2A、I C=0.2A,在表格中记录数据后,下一步应该做的是()A. 整理器材,结束实验B. 分析数据,得出结论C. 换用不同规格的小灯泡,再测出几组电流值D. 换用电流表的另一量程,再测出一组电流值7、关于人和绿色植物呼吸作用的描述,正确的是()A. 都要吸入二氧化碳B. 人吸入氧气,绿色植物吸入二氧化碳C. 都要吸入氧气D. 人吸入二氧化碳,绿色植物吸入氧气8、如图所示,将原来置于黑暗环境中的绿色植物移至光下后,CO2的吸取量发生改变,下列各项叙述正确的是()A. 曲线AB段表示绿色植物没有进行光合作用B. 曲线BC段表示绿色植物只进行光合作用C. 在B点,光合作用和呼吸作用的速率相等D. 整段曲线表明,随着光照强度增强,光合作用增强,呼吸作用减弱评卷人得分二、填空题(共8题,共16分)9、信息的磁记录:通过 ____ 的方法来记录信息。
甘肃省北京师范大学庆阳实验学校2023-2024学年八年级下学期期中考试英语试题(学生版)
北师大庆阳附校八年级英语第二学期期中考试听力部分(30分)Ⅰ.听力(共20小题,满分30分)第一节(每小题1分,共5分)听下面5个句子,请从每题所给的A、B、C三个选项中选出与句子内容相符的图画。
1. A. B. C.2. A. B. C.3. A. B. C.4. A. B. C.5. A. B. C.第二节(每小题1分,共5分)听下面5个句子,从每题所给的A、B、C三个选项中选出最佳答语。
6. A. I’m coming. B. All right. C. I cut myself.7. A. For ten minutes. B. After 3 this afternoon. C. 9 friends.8. A. No problem. B. I’m 13. C. Not at all.9. A. That’s a good idea. B. No, I don’t. C. He is a doctor.10. A. No, I didn’t. B. Yes, I was. C. Yes, I did.第三节(每小题2分,共10分)听下面5段对话, 从每题所给的A、B、C三个选项中选出最佳选项。
11. What does the man advise the woman to do?A. Get an X-ray.B. Move her arm.C. Wash her arm.12. What may the girl attend?A. An educational program.B. A math training program.C. An after-school study program.13. What does the girl want to borrow?A. A football.B. A magazine.C. A CD player.14. Why can’t the boy go to play football with the girl?A. He doesn’t like playing football.B. He’ll go to see the doctor.C. He’ll do his homework.15. What was the mother doing when the boy was knocking at the door?A. She was sleeping.B. She was cooking.C. She was dancing.第四节(每小题2分,共10分)听下面一段短文,从每题所给的A、B、C三个选项中选出最佳选项。
2019-2020学年北师大版八年级上册第三章位置与坐标 轴对称与坐标变化拔高练习
2019-2020北师大版八年级上册 轴对称与坐标变化拔高练习(含答案)一、单选题1.点A (a ,3)与点B (4,b )关于y 轴对称,则(a+b )2017的值为( )A .0B .﹣1C .1D .720172.若A (2a ﹣b ,a+b )关于y 轴对称点是A 1(3,﹣3),则P (a ,b )关于x 轴对称点P 1的坐标是( )A .(﹣2,﹣1)B .(2,﹣1)C .(﹣2,1)D .(2,1)3.已知M (2,2).规定“把点M 先作关于x 轴对称,再向左平移1个单位”为一次变换.那么连续经过2018次变换后,点M 的坐标变为( )A .(﹣2016,2)B .(﹣2016,一2)C .(﹣2017,﹣2)D .(﹣2017,2) 4.如图,A ,B 的坐标为()2,0,()0,1,若将线段AB 平移至11A B ,则a b +的值为( )A.2B.3C.4D.55.如图,动点P 在平面直角坐标系中按图中箭头所示方向运动,第1次从原点运动到点(1,1),第2次接着运动到点(2,0),第3次接着运动到点(3,2),……,按这样的运动规律,经过第2019次运动后,动点P 的坐标是( )A .(2018,0)B .(2017,1)C .(2019,1)D .(2019,2)6.如图,过点A 0 (2,0)作直线l :y =33x 垂直,垂直为点A 1,过点A 1作A 1 A 2⊥x 轴,垂直为点A 2,过点A 2作A 2 A 3⊥l ,垂直为点A 3,……,这样依次下去,得到一组线段:A 0 A 1,A 1 A 2,A 2 A 3,……,则线段A 2016 A 2017的长为( )A .(32)2015B .(32)2016C .(32)2017D .(32)2018 7.如图,在平面直角坐标系中,一动点从原点O 出发,按向上,向右,向下,向右的方向不断地移动,每移动一个单位,得到点()1A 0,1,()2A 1,1,()3A 1,0,()4A 2,0,⋯那么点4n 1A (n +为自然数)的坐标为( )(用n 表示).A .()2n 1,1-B .()2n 1,1+C .()2n,1D .()4n 1,1+8.如图,一个机器人从点O 出发,向正西方向走2m 到达点A 1;再向正北方向走4m 到达点A 2,再向正东方向走6m 到达点A 3,再向正南方向走8m 到达点A 4,再向正东方向走10m 到达点A 5,…按如此规律走下去,当机器人走到点A 2017时,点A 2017的坐标为( )A.(2016,2016)B.(2016,-2016)C.(-2018,-2016)D.(-2018,2020)9.如图,一个粒子在第一象限内及x轴、y轴上运动,在第一分钟,它从原点运动到点(1,0),第二分钟,它从点(1,0)运动到点(1,1),而后它接着按图中箭头所示在与x轴,y轴平行的方向上来回运动,且每分钟移动1个单位长度,那么在第2019分钟时,这个粒子所在位置的坐标是( )A.(44,5) B.(5,44) C.(44,6) D.(6,44)10.如图,所有正方形的中心均在坐标原点,且各边与x轴或y轴平行.从内到外,它们的边长依次为2,4,6,8,…,顶点依次用A1,A2,A3,A4,…表示,则顶点A55的坐标是()A.(13,13)B.(﹣13,﹣13)C.(14,14)D.(﹣14,﹣14)二、填空题11.已知坐标平面内一点A(1,-2)(1)若A、B两点关于x轴对称,则B(________),(2)若A、B两点关于y轴对称,则B(________),(3)若A、B两点关于原点对称,则B(________).12.已知点P(3,1)关于y轴的对称点Q的坐标是(a+b,﹣1﹣b),则ab的值为_____.13.已知()234a-=,则点A(1,a)关于y轴的对称点为B,则点B的坐标为___________. 14.如图,点A0(0,0),A1(1,2),A2(2,0),A3(3,-2),A4(4,0),….根据这个规律,探究可得点A2 019的坐标是_______.15.如图,动点P在平面直角坐标系中按图中箭头所示方向运动,第1次从原点运动到点(1,1),第2次接着运动到点(2,0),第3次接着运动到点(3,2),…,按这样的运动规律,经过第2011次运动后,动点P的坐标是________16.正方形A1B1C1O,A2B2C2C1,A3B3C3C2,…按如图的方式放置,点C1、C2、C3…在x轴上,点A1、A2、A3…在直线l上,A1(0,1),∠A2A1B1=45°,则点B n的坐标为____________(用n的代数式表示,n为正整数);参考答案1.B【解析】【分析】根据关于y轴对称的点的纵坐标相等,横坐标互为相反数,可得答案.【详解】解:由题意,得a=-4,b=3.(a+b)2017=(-1)2017=-1,故选:B.【点睛】本题考查了关于y轴对称的点的坐标,利用关于y轴对称的点的纵坐标相等,横坐标互为相反数得出a,b是解题关键.2.C【解析】【分析】根据关于y轴对称的点,纵坐标相同,横坐标互为相反数,可得方程组,解方程组,可得P点坐标,根据关于关于x轴对称的点,横坐标相同,纵坐标互为相反数,可得答案.【详解】解:由A(2a-b,a+b)关于y轴对称点是A1(3,-3),得233a ba b-=-⎧⎨+=-⎩,解得21ab=-⎧⎨=-⎩,∴P(-2,-1).P(-2,-1)关于x轴对称点P1的坐标是(-2,1),故选:C.【点睛】本题考查了关于x轴、y轴对称的点的坐标,解决本题的关键是掌握好对称点的坐标规律:关于x 轴对称的点,横坐标相同,纵坐标互为相反数;关于y轴对称的点,纵坐标相同,横坐标互为相反数;关于原点对称的点,横坐标与纵坐标都互为相反数.3.A【解析】【分析】根据题意,将M点沿着x轴翻折,再向左平移一个单位长度,所以点M向左平移2018个单位长度,知道M点的横坐标,当翻折次数为奇数时,纵坐标为-2,翻折次数为偶数时,纵坐标为2即可求解.【详解】根据题意,将M点沿着x轴翻折,再向左平移一个单位长度,所以点M向左平移2018个单位长度,知道M点的横坐标为-2018+2=-2016,当翻折次数为奇数时,纵坐标为-2,翻折次数为偶数时,纵坐标为2,∵2018是偶数,∴M点的坐标为(-2016,2),故答案为A.【点睛】本题考查了图形经多次变换后的规律,正确找到规律是解决本题的关键.4.A【解析】由B 点平移前后的纵坐标分别为1、2,可得B 点向上平移了1个单位,由A 点平移前后的横坐标分别是为2、3,可得A 点向右平移了11个单位,由此得线段AB 的平移的过程是:向上平移1个单位,再向右平移1个单位,所以点A 、B 均按此规律平移,由此可得a 011=+=,b 011=+=,故a b 2+=.故选:A .5.D【解析】【分析】分析点P 的运动规律,找到循环次数即可.【详解】分析图象可以发现,点P 的运动每4次位置循环一次.每循环一次向右移动四个单位,∴2019=4×504+3.当第504循环结束时,点P 位置在(2016,0),在此基础之上运动三次到(2019,2). 故选D .【点睛】本题是规律探究题,解题的关键是找到动点运动过程中,每运动多少次形成一个循环. 6.B【解析】解:由33y x =,得l 的倾斜角为30°,点A 坐标为(2,0),∴OA =2,∴OA 1=32OA =3,OA 2=32OA 1=32,OA 3=32OA 2=334,OA 4=32OA 3=98,…,∴OA n =3()2n OA =2×3()2n ,∴OA 2016=2×20163()2,A 2016A 2107的长12×2×20163()2=20163()2,故选B . 点睛:本题考查了规律型中点的坐标以及含30度角的直角三角形,利用“在直角三角形中,30°角所对的直角边等于斜边的一半”结合图形找出变化规律OA n =3()2n OA =2×3()2n 是解题的关键. 7.C【解析】【分析】根据图形分别求出n 1=、2、3时对应的点4n 1A +的坐标,然后根据变化规律写出即可.【详解】由图可知,n 1=时,4115⨯+=,点()5A 21,, n 2=时,4219⨯+=,点()9A 41,, n 3=时,43113⨯+=,点()13A 61,, ……所以,点()4n 1A 2n 1+,, 故选C .【点睛】本题考查了点的坐标的变化规律,仔细观察图形,分别求出n 1=、2、3时对应的点4n 1A +的对应的坐标是解题的关键.8.C【解析】∵点A1在x轴的负半轴上,从点A2开始,点Ax按顺时针方向,4个一循环,依次出现在第二象限,第一象限,第四象限和第三象限,-÷=,由于(20171)4504∴A2017在第三象限;观察图形和已知条件可得点A2的坐标为(-2,2),A3的坐标为(4,4),A4的坐标为(4,-4),A5的坐标为(-6,-4),∴出现在第二象限的点Ax的坐标为(-x,x),出现在第一象限的点Ax的坐标为(x+1,x+1),出现在第四象限的点Ax的坐标为(x,-x),出现在第三象限的点Ax的坐标为(-x-1,-x+1),∵点A2017在第三象限,∴点A2017的坐标为(-2018,-2016).故选C.9.A【解析】【分析】要弄清粒子的运动规律,先观察横坐标和纵坐标的相同点:(0,0),粒子运动了0分钟.(1,1)就是运动了2=1×2分钟,将向左运动!(2,2)粒子运动了6=2×3分钟,将向下运动!(3,3),粒子运动了12=3×4分钟.将向左运动…(44,44)点处粒子运动了44×45=1980分钟!此时粒子会将向下移动,进而得出答案.【详解】粒子所在位置与运动时间的情况如下:位置:(1,1),运动了2=1×2(分钟),方向向左;位置:(2,2),运动了6=2×3(分钟),方向向下;位置:(3,3),运动了12=3×4(分钟),方向向左;位置:(4,4),运动了20=4×5(分钟),方向向下,由上式规律,到(44,44)处时,粒子运动了44×45=1980(分钟),方向向下,故到2019分钟,须由(44,44)再向下运动2019-1980=39(分钟),所以在第2019分钟时,这个粒子的纵坐标为44-39=5,所以其坐标为(44,5),故选A.【点睛】本题考查了点的坐标的确定.本题也是一个阅读理解并猜想规律的题目,解答此题的关键是总结规律首先确定点所在的大致位置,然后就可以进一步推得点的坐标.10.C【解析】【分析】观察图象可知每四个点一圈进行循环,每一圈第一个点在第三象限,再根据点的脚标与坐标找出规律解答即可.【详解】∵55=4×13+3,∴A55与A3在同一象限,即都在第一象限,根据题中图形中的规律可得:3=4×0+3,A3的坐标为(0+1,0+1),即A3(1,1),7=4×1+3,A7的坐标为(1+1,1+1),A7(2,2),11=4×2+3,A11的坐标为(2+1,2+1),A11(3,3);…55=4×13+3,A55的坐标为(13+1,13+1),A55(14,14);故选C.【点睛】本题是图形规律探究题,解答本题是根据每四个点一圈进行循环先确定点所在的象限,然后根据点的脚标与坐标找出规律,再求点的坐标即可.11.(1,2)、(-1,-2)、(-1,2)【解析】【分析】关于x轴对称的点的坐标的特点是:横坐标不变,纵坐标互为相反数;关于y轴对称的点的坐标的特点是:横坐标互为相反数,纵坐标不变;关于原点对称的点的坐标的特点是:横纵坐标都互为相反数.由此即可解答.【详解】(1)∵A、B两点关于x轴对称,∴点B的坐标是(1,2).(2)∵A、B两点关于y轴对称,∴点B的坐标是(-1,-2).(3)∵A、B两点关于原点对称,∴点B的坐标是(-1,2).故答案为:(1). (1,2);(2). (-1,-2);(3). (-1,2).【点睛】本题考查了平面直角坐标系中,关于对称轴及原点对称点的坐标的特点,熟记关于对称轴及原点对称点的坐标的特点是解题的关键.12.2【解析】【分析】根据“关于y轴对称的点,纵坐标相同,横坐标互为相反数”求出ab的值即可.【详解】∵点P(3,1)关于y轴的对称点Q的坐标是(a+b,﹣1﹣b),∴a+b=-3,-1-b=1;解得a=-1,b=-2,∴ab=2.故答案为2.【点睛】本题考查了关于x轴,y轴对称的点的坐标,解题的关键是熟练的掌握关于y轴对称的点的坐标的性质.13.(-1,-1) 或(-1,7)【解析】【分析】先由已知条件求出a的值,再求出点B的坐标即可.∵()234a-=,∴|a﹣3|=4,∴a﹣3=±4,∴a=7或﹣1,∴A(1,7)或(1,﹣1),∴点B(﹣1,7)或(﹣1,﹣1).故答案为(﹣1,﹣1) 或(﹣1,7).【点睛】平面直角坐标系中,若两点关于y轴对称,那么这两个点的纵坐标相等,横坐标互为相反数;若两点关于x轴对称,那么这两个点的横坐标相等,纵坐标互为相反数.14.(2019,-2)【解析】【分析】由图形得出点的横坐标依次是0、1、2、3、4、…、n,纵坐标依次是0、2、0、-2、0、2、0、-2、…,四个一循环,继而求得答案.【详解】解:观察图形可知,点的横坐标依次是0、1、2、3、4、…、n,纵坐标依次是0、2、0、-2、0、2、0、-2、…,四个一循环,2019÷4=504…3,点A2019是从点A0开始第2020个点,2020÷4=505.故点A2019坐标是(2019,-2).故答案为:(2019,-2).本题考查规律型:点的坐标,学生的观察图形的能力和理解能力,解题关键是根据图形得出规律,题目比较典型,但是一道比较容易出错的题目.15.(2011,2)【解析】【详解】根据动点P在平面直角坐标系中按图中箭头所示方向运动,第1次从原点运动到点(1,1),第2次接着运动到点(2,0),第3次接着运动到点(3,2),第4次运动到点(4,0),第5次接着运动到点(5,1),…,∴横坐标为运动次数,经过第2011次运动后,动点P的横坐标为2011,纵坐标为1,0,2,0,每4次一轮,∴经过第2011次运动后,动点P的纵坐标为:2011÷4=502余3,故纵坐标为四个数中第三个,即为2,∴经过第2011次运动后,动点P的坐标是:(2011,2),故答案为:(2011,2).16.(2n﹣1,2n-1)【解析】【分析】根据等腰直角三角形的性质结合正方形的性质可得出点B1的坐标,同理可得出点B2、B3、B4、…的坐标,再根据点的坐标的变化即可找出点B n的坐标.【详解】∵A1(0,1),∴OA1= 1.∵四边形A1B1C1O为正方形,∴点B1的坐标为(1,1).∵∠A2A1B1=45°,∴A2B1=A1B1=1,∴A2C1=2,∴点A2的坐标为(1,2).∵四边形A2B2C2C1为正方形,∴点B2的坐标为(3,2).同理可得:点A3的坐标为(3,4),点B3的坐标为(7,4),点A4的坐标为(7,8),点B4的坐标为(15,8),…,∴点B n的坐标为(2n﹣1,2n﹣1).故答案为:(2n﹣1,2n﹣1).【点睛】本题考查了正方形的性质以及点的坐标,根据等腰直角三角形的性质结合正方形的性质找出点B n的坐标是解题的关键.。
2023北京西城北师大附中初二期中(下)英语试卷及答案
北京师大附中2022—2023学年第二学期期中考试初二英语试卷教学班姓名学号一、听力选择。
听下面四段对话或独白。
每段对话或独白后有两道小题,从所给的A、B、C三个选项中选出最佳选项。
每段对话你将听两遍。
本大题共8小题,共8分。
听一段对话,完成第1至第2小题。
1. What did Anna win in the writing competition?A. The first prize.B. The second prize.C. The third prize.2. What did Anna do every day to improve her writing?A. She kept writing a report.B. She took a writing lesson.C. She read some books about writing.听一段对话,完成第3至第4小题。
3. When will China send Shenzhou 16?A. In June.B. In May.C. In March.4. Why is David writing a letter?A. To let them know the news.B. To show he is proud of them.C. To be an astronaut on Shenzhou 16.听一段对话,完成第5至第6小题。
5. Why does the woman like the movie Ant-man?A. Because this is the most interesting movie she has watched.B. Because the actors are wonderful and the story is full of surprises.C. Because it talks about the deep love between a father and his daughter.6. What will the two speakers do next Thursday?A. Watch a play.B. Act in a film.C. Meet actors.听一段独白,完成第7至第8小题。
北师大附中2020-2021学年八年级上学期期中考试道德与法治试卷(word版,含答案解析)
③只要自己资质聪慧,玩玩网络游戏也无妨
④要理性参与网络生活
A.②③④B.①②③C.①②④D.①③④
17.在网络世界中,只要具备上网条件就可以进入“聊天室”。在思想感情交流中,交往者可以直抒胸臆,进退自如,爱恨随意。性格内向的人在网络中可能非常活跃,生活中没有交集的人可能成为亲密的网友。下列对此理解正确的是()
A.网络让生活变得更加便利和丰富
B.网络丰富了民主形式,促进了民主政治的进步
C.网络打破了传统人际交往的时空限制
D.唯有网络才能让生活更美好
14. 2019年10月20日至22日,第六届世界互联网大会在乌镇举行。来自全球83个国家和地区的约1500名嘉宾齐聚乌镇,围绕“智能互联开放合作——携手共建网络空间命运共同体”主题,纵论网络空间发展大势,展示信息技术创新成果,共商网络空间开放合作途径。全球各界人士广泛关注互联网,是因为()
北京师范大学附属中学2020-2021学年八年级上学期期中考试
道德与法治
考试时长60分钟,满分100分。
第I卷(共40分)
一、单项选择题本大题共40小题,共40分。
1. “我们吃别人种的粮食,穿别人缝的衣服,住别人造的房子。我们的大部分知识都是别人创造的,由别人传授给我们……”对这段话理解正确的是
A.投身于社会才能走向成熟
①小张:“中学生学习任务非常紧,参加综合实践活动会影响学习。”
②小王:“中学生年龄小,社会经验不足,没有能力参加综合实践活动。”
③小李:“中学生积极参加综合实践活动能让我们开阔视野、培养能力。”
④小黄:“综合实践活动应该因材施教,开展一些能提高学生能力的活动。”
A.①②B.①④C.②③D.③④
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北师大版2019-2020学年八年级上学英语期中考试试卷D卷一、完形填空 (共1题;共1分)1. (1分)When I was a junior high school student in 1980, God gave me a gift, it was happiness.One weekend, I went to visit my grandparents in the countryside. On my way home a car ran over me and cut off my 1 because of its high speed.Several days later when I woke up at the hospital, I realized I had to spend the rest of my life2 arms. How sad I felt at that time! Even I was full of fears.3 slowly I knew I had to face the fact and got over it. I couldn't get my arms back even though I 4every day.However, it's easier 5 than done. It took me nearly half a year to get out of the sadness 6 .I got so much from my past story. From then on, I could treat my life with a 7 mind. But in our daily life, I often see my classmates 8 about little things: They get a bad grade on a test; their bus comes9; they don’t have a mobile phone but 10 have, and so on. But I only 11 life. I was lucky to realize from an accident : It is a waste of our life to focus on what you have 12 . We should always think of what we have. So why are so many people unhappy? Someone may say, “My whole life would improve 13 I have a new car.” But when you get the car and what 14 ? For a whole week you are walking on air. Then you go right back to being unhappy.Happiness depends on what we have! It’s in our heart. It’s a state of mind, even though you own the whole world, you may still feel15 .Happiness comes from mastering the art of appreciating(感激) and taking pleasure in what you really have.(1)A . feetB . legsC . armsD . ears(2)A . withB . withoutC . forD . on(3)A . OrB . ButC . SoD . Once(4)A . criedB . laughedC . satD . stood(5)A . dreamedB . actedC . calledD . said(6)A . stronglyB . especiallyC . completelyD . similarly (7)A . crazyB . normalC . fullD . special (8)A . get excitedB . get nervousC . get seriousD . get worried (9)A . earlyB . firstC . fastD . late(10)A . the otherB . one anotherC . otherD . others (11)A . hateB . dislikeC . enjoyD . save(12)A . lostB . hadC . foundD . spent (13)A . becauseB . asC . ifD . whether (14)A . happensB . takes placeC . usedD . uses(15)A . funnyB . happyC . excitedD . unhappy二、补全对话 (共2题;共2分)2. (1分)阅读下面对话,从方框内7个选项中选择5个恰当的句子完成此对话。
B: ________ But you have to do some chores first.A: What do I have to do?B: Well, first sweep the kitchen floor.A: OK.________B: Then take out the trash.A: Yeah________B: And you need to clean your room.A: Wow! I'm going to be too tired to hold my own party!B: ________ And I'll go to the store for drinks and snacks.A: ________3. (1分)根据材料内容从方框中选择合适的句子填入材料空缺处,使材料内容完整、正确,其中有一个句子是多余的。
When the first Ice Age film came out in 2002.a group of cute animals became well-known in the world.Now Time For Kids(TFK)talks with actress and singer Keke Palmer.Keke Palmer voices(给……配音)a mammoth called Peaches in Ice Age:Collision Course,the fifth Ice Age film.(P=Palmer)TFK:________P:In this Ice Age.Peaches is getting ready to get married.But her dad can't accept the fact that she will leave him.So Peaches tries to make her dad believe that change is coming and he has to accept this new kind of their relationship(关系).TFK:________P:To tell the truth,I have a lot in common with her.She's very close with her mum,and I'm close with mum.And like her,I also try my best to be independent(独立的).TFK:________P:Fun but educational.You know,Ice Age has always been so popular because it conveys(传递)deep messages but still finds a way to keep it fun for kids.TFK:________P:I think kids will see that change is a good thing—it's the opening of new doors in their life.TFK:________P:It's different for everyone.In fact,if you love acting you can do it anywhere.You can start your own acting club,have fun with friends,or create a scenario(电影脚本)on the Internet.Just find creative ways to do what you love.4. (25分)任务型阅读。
维生素对人体很重要,大家了解他们吗?请仔细阅读题中的五种维生素的介绍和A至F材料说明,匹配需要补充该种维生素的人。
What can high-vitamin A foods do for you?be great for night visionhelp you see in colorhelp your grow properly and aids in healthy skin﹡ vitamin A in carrots helps you see at night________The B vitaminsWhat can the B vitamins do for you?help make energy and set it freehelp make red blood cells which carry oxygen(氧气) throughout your body﹡ The B vitamins in leafy green vegetables help your body make protein(蛋白质)and energy.________Vitamin CWhat can vitamin C do for you?keep body tissues(组织) in good shapehelp you heal when you get hurthelp your body resist infection﹡ Vitamin C in oranges helps yourself heal if you get a cut________Vitamin DWhat can vitamin D do for you?help keep your bones strong and healthyhelp keep your teeth strong and healthyhelp your body absorb the amount of calcium(钙)﹡ Vitamin D in milk helps your bones and teeth.What can vitamin E do for you?protect your skin from ultraviolet(紫外线) lightprotect you lungs from becoming damaged by polluted airhelp make red blood cells﹡ Sunflowers seeds are the richest in Vitamin EA. Emily often feels tired and seems to be lack of energy.B. Jeff spent his summer vacation on the beach and got serious sunburnt.C. Kate has poor eyesight and she can't see clearly at night.D. Tony sometimes feels pains in his bones and he has loose teeth.E. Linda feel nervous before the new people.F. Luke is so careless that he often gets hurt. And it takes a long time for his wound to heal.四、阅读理解 (共2题;共20分)5. (10分)阅读下列短文,从下面每小题的A、B、C、D四个选项中选出最佳选项。