期末复习题(二)8
物理粤沪八年级(下册)期末复习检测题(二)
图 3 图1 期末复习检测题（二）（测试范围：6-10章）（满分：100分）一、单项选择题（每题3分，共27分）1.把萝卜腌成咸菜通常需要几天，而把萝卜炒熟，使之具有相同的咸味，仅需几分钟。
造成这种差别的主要原因是（ ）A ．萝卜分子间存在空隙，易扩散B ．盐分子与萝卜分子间存在相互作用的引力C ．炒菜时萝卜是运动的，盐分子更容易进入萝卜中D ．炒菜时温度高，分子热运动更激烈 2.如图1所示，广州亚运会自行车比赛中，一名中国运动员超越另一名运动员的瞬间，如果说中国运动员是静止的，所选择的参照物是（ ）A.另一名运动员B.地板C.他所骑的赛车D.观众3.在图2所示的四种用具中，正常使用时属于费力杠杆的是（ ）4．如图3，起重机的钢丝绳吊着一个重物，比较重物在静止、匀速上升、匀速下降时钢丝的拉力，正确的是（ ）A ．匀速上升时拉力最大B ．静止时拉力最大C ．匀速下降时拉力最小D ．拉力一样大5.小阳同学发现，将两本科学书每隔两页相互交叉叠在一起，竟然很难将它们沿水平方向拉开。
图4所示的现象中，与上述实验原理一致的是（ ）图4A.甲图：快速抽出纸条，杯子仍然静止B.乙图：抛出的球落回地面C.丙图：手握瓶子，瓶子不落下D.丁图：压路机压实路面6.适应生存环境是动物的天性．如图5所示的解释中，不正确的是（）图57.小明在观看乒乓球比赛时，对乒乓球和球拍产生了下列四种想法，其中正确的是（）A.乒乓球在空中飞行时没有惯性B.乒乓球改变运动方向是因为受到了力的作用C.乒乓球给球拍的力和球拍给乒乓球的力是一对平衡力D.接触时，乒乓球先给球拍一个力，球拍然后也给乒乓球一个力8.电工师傅上水泥杆时用的脚扣结构如图6所示，它由一根钢条做成的约3/5的弧度，在前后A、B处绑上橡皮，踏脚板D上固定脚的皮带C，A、B不在同一个水平面上，在竖直方向有一个高度差，下列分析错误的是（）A.脚扣可等效为一个杠杆，B是支点B.在A、B处绑上橡皮是为了减小摩擦C.脚踏板做得宽大是为了减小脚受到的压强D.A、B间有高度差是为了保证脚扣对水泥杆产生足够的压力图6 图79.如图7所示，浸没的潜艇甲和漂浮的渔船乙均由河里驶入海中．它们所受浮力的变化情况是（）A．甲、乙均不变 B．甲不变，乙变大C．甲变大，乙不变 D．甲、乙均变大二、填空题（每空1分，共21分）10.宇宙大千世界，从宏观到微观，从天体到原子，似乎都有那么多惊人的相同规律。
初中英语(八年级)期末复习习题及答案
初中英语（八年级）期末复习习题及答案（1）My uncle_________ (be) in this city for many years.（2）She_________ (not play) football these days.（3）He_________ never_________ (meet) a foreigner.（4）There____(be) a meeting tomorrow. Please_________ ( come) on time.（5）How long_________ you uncle_________ (live) in Beijing？（6）They_____ (write) letters the whole morning. They didn't have a rest.（7）Look! The children_________ (play) in the park.（8）Yesterday I_________ (go) to_________ (see) a film. On my way to the cinema,I_______ (meet) your mother there. We_______(talk) a lot.We_________ (be) very happy. （9）We_________ (have) a good time in the Summer Palace last Sunday.（10）He _________ (break) his left leg in the accident yesterday. His friends_______(take) him to hospital at once.（11）Stop _________ (talk), class begins now." The teacher says. All the students stop ________(listen) to the teacher.（12）Don't forget ________ (close) the window when you leave the room.（13）Why not__________ (go) to the park with me tomorrow?（14）My mother asked me ________ (help) her _________ (clean) the room.（15）Miss Green________ (teach)in that school since about ten years ago.（16）I______(be not) a middle school student.17She ______(be) in Class Six ,Grade One .We________(be) all Young pioneers. 18．Sam and I________(be) in different classes .19．There _______(be) a map on the wall. There _______(be) some boats in the river. 20．There__________(be) a pencil-box and some books in the bag .21．There__________(be) two bikes and a car near the house.22．I can ___________(see) some flowers on the table.23. You must__________(find) those things.24. ______ you ________(have) a new watch?25. Let me _________(see),please. I __________(not have) a watch .26. I think he ___________(be)back in a week.27. It's time ___________(play) games.28. I want ___________(take) some books to the classroom .29. Could you ___________(take) it to your room ?30. It's snowing now. We can go out __________ (play) in the snow.31. ___________(not jump) too high! Would you like___________(drink) tea ?32. She __________(like) her new skirt .33. The men ____________(work) near the house now.34. Look! The teachers ___________(talk) to the students.35. Can you __________(look) after her ?36. Don't ________(talk). Jim _________(do) his homework..Look! The windows are__________(close) now.37They __________(like)the kite very much.38 Where _________ your brother________ (come) from?39. Bill ________ (stay) at home every Sunday.40. I can help you ________ (carry) the things. I'd like something ________ (eat).41. Mike _______ (read) English in the morning.He likes _______(read) very much.42 ______ they ______ (speak) Japanese? Yes, they do.43. Jim _______ (not have) any apples, she wants _______ (get) some.44. Would you like _______ (borrow) it? Does he like ________ (sing)?45. We _____ (stay) at home on Sundays. He ______ (go) to classes every week.47. Stop _________(talk). Let's begin our clas1. We ____ to move but are still considering where to go to.A. are decidingB. DecidedC. have decidedD. had decided2. I left my pen on the desk and now it’s gone; who ________ it?A. tookB. has takenC. will takeD. had taken3. They won’t buy any new clothes because they ________ money to buy a new car.A. saveB. were savingC. have savedD. are saving4. I ________ your last point —could you say it again?A. didn’t quite catchB. don’t quite catchC. hadn’t quite catchD. can’t quite catch5. —Are you a teacher?—I ________, but now I am working in a company.A. isB. amC. wasD. had6. I feel sure I ________ her somewhere before.A. was to meetB. have metC. had metD. would meet7. —Does Liu Hui serve in the army?—No, but he ________ in the army for three years.A. servedB. has servedC. is servingD. would serve8. I ___ my breakfast when the morning post came.A. hadB. had been havingC. have been havingD. was having9. Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.A. has just leftB. had just leftC. just leftD. was just leaving10. —I’m sorry; I shouldn’t have been so rude to you.—You ________ your temper but that’s OK.A. have lostB. had lostC. did loseD. were losing11. —You must have met him the other day.—Oh, no, I ________.A. hadn’tB. mustn’tC. haven’tD. didn’t12. —You could have asked Mr Johnson for help. He is kind-hearted.—I ________ that. A whole day ________.A. forget; wastesB. forgot; was wastedC. forgot; had wastedD. forget; was wasted13. —Did you enjoy the film?—Yes, it’s the best one I ________ these years.A. hadB. have hadC. had hadD. would have14. When I called you this morning, nobody answered the phone. Where________?A. did you goB. have you goneC. were youD. had you been15. There __________ a meeting tomorrow afternoon.A. will be going toB. will going to beC. is going to beD. will go to be16. Charlie ________ here next month. A. isn’t working B. doesn’t working C. isn’t going to working D. won’t work17．The twins＿＿＿＿＿＿in Dalian last year．They＿＿＿here now．A．are; were B．were; are C．was; are D．were; was18. There ________ a dolphin show in the zoo tomorrow evening.A. wasB. is going to haveC. will haveD. is going to be19.My brother ___ while he ___ his bicycle and hurt himself.A. fell, was ridingB. fell, were ridingC. had fallen, rodeD. had fallen, was riding20. Mother ________ me a nice present on my next birthday.A. will givesB. will givC. givesD. give21. The reporter said that the UFO ___ east to west when he saw it.A. was travelingB. traveledC. had been travelingD. was to travel22. ___________? He did some reading at home. A What does your father do yesterday eveningB What does your brother do in the schoolC What did your brother do over the weekendD Where did your brother go last Sunday23.________ a concert next Saturday? A. There will beB. Will there beC. There can beD. There are24. What did you do ________ ? I went to the movies.A next morningB yesterdayC at the momentD next Monday25. He ________ her a beautiful hat on her next birthday.A. givesB. gaveC. will givingD. is going to giving26.When I arrived at his office, he ___ on the phone.A. was speakingB. spokeC. had been speakingD. had spoken27. – Will his parents go to see the Terra Cotta Warriors tomorrow?–No, ________ （不去）.A. they willn’t.B. they won’t.C. they aren’t.D. they don’t.28. Who ________ we ________ swimming with tomorrow afternoon?A. will; goB. do; goC. will; goingD. shall; go29. We ________ the work this way next time.A. doB. will doC. going to doD. will doing30．—Who was on duty last Friday﹖—＿＿＿＿＿＿．A．I am B．I was C．Yes, I was D．No, I wasn'tHave you ever asked yourself why children go to school? You may 1 they go to learn languages, P.E., history, science and all other 2 . But why do they learn these things?We send our children to school to prepare them for the time 3 they will grow up and will begin to work for 4 . Nearly everything they study at school has some practical use in their life. But is that the 5 reason why they go to school?There is more in education than just 6 facts. We go to school above all to learn how to learn, so that then we have left school we can 7 to learn.A man who really knows how to learn will always be successful, because whenever he has to do something new which he has never had to do 8 he will rapidly teach himself how to do it 9 the best way. The uneducated person, on the other hand, is 10 unable to do something new, or does it badly. The purpose of school, therefore, is not to teach languages, math, geography, etc, but to teach pupils the way to learn.( ) 1. A. speak B. tell C. say D. talk( ) 2. A. matters B. subjects C. math D. physics( ) 3. A. while B. when C. which D. where( ) 4. A. oneself B. they C. them D. themselves( ) 5. A. only B. nearly C . lone D. alone( ) 6. A. study B. studied C. learning D. learn( ) 7. A. make B. keep C. keep on D. go on( ) 8. A. later B. ago C. then D. /( ) 9. A. from B. in C. with D. on( ) 10. A. either B. neither C. other D. NorIn the USA, there are many types of restaurants. Fast food restaurants are very famous. You can find McDonald’s and Kentucky Fried Chicken in many countriesaround the world. You look at a menu above the counter, and say what you’d like to eat. You pay the person who serves you. You take your food and sit down or take it away. There’s no need to leave a tip.In a coffee sho p you sit at the counter or at a table. You don’t wait for the waitress to show you where to sit. She usually brings you coffee when you sit down. You tell her what you’d like to eat and she brings it to you. You pay the cashier as you leave. A diner is like a coffee shop but usually looks like a railway carriage.In a family restaurant the atmosphere is casual, but the waitress shows you where to sit. Often the waitress tells you her name, but you don’t need to tell her yours. If you don’t eat everythi ng, your waitress gives you a doggy bag to take your food home. You add an extra fifteen percent to the bill as a tip.In top class restaurants, you need a reservation and you need to arrive on time. The waiter shows you where to sit. If you have wine, he may ask you to taste it. You can only refuse it if it tastes bad, not if you don’t like it. When you get your bill, check it and then add fifteen to twenty percent to it as a tip for the waiter.1. counter柜台2. tip小费3. carriage火车车厢4. casual随意的5. percent百分之……6. reservation预定7. refuse拒绝1. There are ______ types of restaurants here.A. threeB. fourC. fiveD. six2. We should sit ______ in a coffee shop.A. near the doorB. in the cornerC. at a counterD. on the floor3. In what kind of restaurant does the waitress often tell you her name?A. In a top class restaurantB. In a fast food restaurantC. In a coffee shopD. In a family restaurant4. How much do you need to tip in a top class restaurant?A. Ten percentB. Fifteen percentC. Thirty percentD. Forty percent附答案CbbdaCddbabcdb。
大学有机化学期末复习三套试题及答案之二
有机化学试题及答案（二）一、命名下列化合物或者写出化合物的名称（共8 题，每题 1 分，共计 8 分）1.CH3CH3CH2CHCHCH 3CH 2CH32.CH 3CH=CCH 3CH 33.NO 2NHNH 24.CH 2CH 3CH 35.CH3CH2CHO6.2， 2-二甲基 -3， 3-二乙基戊烷7.3， 4-二甲基 -2- 戊烯8.α- 甲基 - β- 氨基丁酸二、判断题（共8 小题，每题 2 分，共 16 分）1、由于烯烃具有不饱和键，其中π键容易断裂，表现出活泼的化学性质，因此其要比相应烷烃性质活泼。
（）2、只要含有α氢的醛或者酮均能够发生碘仿反应。
（）3、脂环烃中三元环张力很大，比较容易断裂，容易发生化学反应，通常比其他大环活泼些。
（）4、羧酸在 NaBH 4的作用下能够被还原为相应的醛甚至醇。
（）5、醛酮化学性质比较活泼，都能被氧化剂氧化成相应的羧酸。
（）6、环己烷通常稳定的构象是船式构象。
（）7、凡是能与它的镜象重合的分子，就不是手性分子，就没有旋光性。
（）8、芳香胺在酸性低温条件下，与亚硝酸反应，生成无色结晶壮的重氮盐，称为重氮化反应。
（）三、选择题（共 4 小题，每题 2 分，共 8 分）1、下列物质在常温下能使溴水褪色的是（）A 丙烷B 环戊烷C 甲苯D 乙烯2、羧酸衍生物中，下列哪种最容易水解（）A 酰卤B 酸酐C 酰胺D 酯CH 3CH CCH 33、按照马氏规则，Cl 与 HBr 加成产物是（）BrCH 3CHCHCH 3 CH3CHCHCH 3CH 3CH2CCH 3 CH 3CHCHCH 3A ClB Cl BrC Br ClD Br Br4、下列物质容易氧化的是（）A 苯B 烷烃C 酮D 醛四、鉴别题（共 6 题，每题 4 分，任选 4 题，共计 16 分）（1）乙烷、乙烯、乙炔（2）甲苯、 1-甲基 -环己烯、甲基环己烷Cl CH 2Cl Cl Cl（3）（4）乙醛、丙醛、丙酮CH 2OH CH3OH（5）BrCH 2Br（6）CH3五、选用适当方法合成下列化合物（共7 题，每题 4 分，共 28 分）（1）丙炔异丙醇（2）甲苯邻、对硝基苯甲酸（3） 1-溴丙烷3-溴丙烯CH3CH3CH2CH2 C CH3 CH3C CCH2CH2CH3（4）O CH3(CH 3)2 CHOH (CH 3)2CCOOH(5) OH(6) CH3 CH2CH 2OH HC CCH 3(7) H2C CHCH3 H2C CHCH2COOH六、推导题（共 5 小题，每题 6 分，任选 4 题，共 24 分）1、A、B 两化合物的分子式都是C6H 12，A 经臭氧氧化并与锌和酸反应后得到乙醛和甲乙酮，B 经高锰酸钾氧化只得丙酸，写出 A 和 B 的结构式，并写出相关反应方程式。
2020年人教版二年级数学上册期末复习题及答案(八套)
2020年人教版二年级数学上册期末复习题及答案说明：本套试卷精心编写了各考点和重要知识点，测试面广，难易兼备，仅供参考。
全套试卷共八卷。
目录：2020年人教版二年级数学上册期末复习题及答案（一）2020年人教版二年级数学上册期末强化训练及答案（二）2020年人教版二年级数学上册期末必考题及答案（三）2020年人教版二年级数学上册期末总复习及答案（四）2020年人教版二年级数学上册期末总复习及答案（五）2020年人教版二年级数学上册期末总复习及答案（六）2020年人教版二年级数学上册期末总复习及答案（七）2020年人教版二年级数学上册期末总复习及答案（八）2020年人教版二年级数学上册期末复习题及答案一班级：姓名：满分：100分考试时间：90分钟题序一二三四五六七总分得分一、填空题。
（20分）1、在图中一共有（________）个角，其中有（________）个直角。
2、6个4相加的和是________。
3、图中一共有______个角，其中有_____个直角，_____个锐角，_____个钝角。
4、9的3倍是________，9是3的________倍。
5、在括号里填上合适的单位。
（1）一座楼房大约高18（_________）（2）小红的身高约145（______）（3）一支铅笔长20（_____________）（4）教室长9（____________）6、按规律接着填数：980、985、990、（__________）、（__________）、1005.7、用0、1、2、3、4五个数字，一共可以组成（__）个没有重复数字的三位数。
8、800里面有（__________）个百，700是由（_________）个十组成的。
9、1米=（_______）厘米35厘米+52厘米=（______）厘米500厘米=（_______）米1米-40厘米=（______）厘米10、平行四边形有（_____）条边，（_____）个角。
江西初中英语八年级下册期末经典复习题(含答案)
一、选择题1．—I don’t like smoking.─_____________.A．Neither he is B．Neither is heC．Neither he does D．Neither does he D解析：D【解析】句意：——我不喜欢抽烟。
——他也不喜欢。
根据句意可知本题考查固定的句式结构“Neither+助动词/情态动词/系动词+主语”，表示前面说的情况也适合于后面的情况，即他也不喜欢抽烟；主语是he，所以助动词用does，故答案选D。
点睛：本句考查倒装句，肯定句的倒装句是“So+助动词/情态动词/系动词+主语”，汉语意思是表示“…...也是”；否定句的倒装句是“Nor/Neither+助动词/情态动词/系动词+主语”，汉语意思是表示“…...也不”；对于助动词、情态动词和系动词的用法，应根据前句使用的词加以选择，与前句的词保持一致。
本题根据题干"我不喜欢抽烟"，可知答语应是"他也不喜欢"，所以应用neither；根据前句的don't可知时态是一般现在时，答语的主语是he，所以助动词用does；故答案选D。
2．The 2018Russia FIFA World Cup is interesting． It is worth ．A．watch B．to watch C．watching C解析：C【解析】【详解】句意：2018年俄罗斯世界杯非常的有趣，值得看。
watch 观看，动词原形；to watch动词不定式；watching动名词。
考查固定词组be worth doing 值得做……，后接动名词，故选：C。
3．﹣I'm afraid of giving a speech in public．﹣______ I believe you can do it well．A．Take it easy．B．That's right．C．No problem．A解析：A【解析】【详解】句意：-我害怕在公共场合做演讲。
八年级下期末复习题(汉译英)
初二年级英语下期复习题(汉译英)1．某一天我将会住在太空站。
_______ _______ I _______ live_________ a space station.2. 收音机报道说五天之后会有一场地震。
The radio says there will _______ _______ _______ _______ five days.3. 你认为人们在家里会拥有机器人吗？_______ you _______ people will have robots _______ _______ homes?4. 下一次世界杯哪个国家会获胜？_______ _______ _______ _______ the next World Cup?5. 使机器人像人一样工作在将来会实现。
To make robots _______ as _______ will _______ _______ in the future.6. 孩子们真的需要时间和自由去玩。
Children ______need ______ and ______to _______.7. 孩子们将会在家通过计算机学习。
The children ______ ______ at home ______ _______. 8．十年后我将成为一名工程师。
I will _______ _______ _______ _______ ten years.9. 我们必须穿校服上学。
We have to _______ _______ _______ _______ school. 10．我乘坐的到上海的航班从北京国际机场起飞。
My _______ to Shanghai _______ _______ _______ Beijing International Airport. 11．当飞碟恰好停在我前方时，我正在街上走。
I _______ _______ down the street when a UFO landed _______ in front of _______. 12．当外星人正在买纪念品时，我打电话给警察。
宁夏吴忠市第四中学2022-2023学年上学期人教版八年级物理期末综合复习题二
人教版八年级物理上学期期末综合复习题二一、单选题(本大题共10小题，共30分)1．下列关于误差与错误的说法中，正确的是（）A.测量中误差不可避免B.错误是完全可以避免的，误差跟错误一样可以避免C.只要测量时态度认真仔细、工具精密，就不会有误差D.多次测量可以减小由于刻度不精密而产生的误差2．如图所示，是汽车通过某一平直公路时绘制的s-t图象，下列说法正确的是（）A.0-t1时间内汽车做加速运动B.t1-t2时间内汽车做匀速运动C.t1-t2时间内汽车处于静止状态D.t2-t3时间内汽车做减速运动3．下列说法中正确的是（）A.利用超声波传递信息制成B超B.次声波对人体有百害而无一利C.通过监测超声波，可以预报台风、地震D.次声波有去污作用，人们据此制成了次声波清洗器4．物态变化让物质世界多姿多彩。
关于物态变化，下列说法不正确的是（）A.放入饮料里的冰块逐渐消失是熔化现象B.冰箱冷冻室内霜的形成是凝华现象C.衣柜里的樟脑丸变小是升华现象D.冬天口中呼出的“白气”是汽化现象5．小明对生活中的热现象的解释或做法正确的是（）A.衣柜中的樟脑丸时间长了会变小甚至消失，是一种汽化现象B.夏天从冰柜中拿出的饮料瓶外有“流汗”现象，是由于瓶内的饮料扩散导致C.将湿衣服晾在通风且光照充足的地方有利于加快水分蒸发D.寒冬的玻璃窗户上常常会有一层“水汽”，应当从室外擦玻璃才能擦干“水汽”6．有一种光电控制液面高度的仪器，它是通过光束在液面上的反射光线射到光电屏上的光斑位置来判断液面高低的。
如图所示的光路中，一束光与液面的夹角为40°，则以下说法正确的是（）A.当液面升高时，光电屏上的光斑S将向右移动B.反射角的大小为40°C.当液面降低时，入射角会随之变大D.该装置利用了光的反射定律7．小京通过焦距为10cm的凸透镜看到了提示牌上“关灯”两字放大的像，如图所示。
下列说法正确的是（）A.“关灯”两字放大的像是实像B.提示牌上“关灯”两字在凸透镜的焦点上C.提示牌上“关灯”两字到凸透镜的距离小于10cmD.提示牌上“关灯”两字到凸透镜的距离大于20cm8．某同学利用注射器、水透镜（弹性膜制成的凸透镜）、蜡烛、光屏、光具座等器材进行探究。
部编版2019-2020学年第一学期八年级语文期末复习试卷含答案
部编版2019-2020学年第一学期八年级语文期末复习试卷含答案一、古诗文积累与运用：（15分）1．几处早莺争暖树，。
2．烽火连三月，。
3．，病树前头万木春。
4．《次北固山下》一诗中，诗人在对自然景物的描写中融入生活理趣的名句是：，。
5．《过零丁洋》中最能体现诗人“舍生取义，杀生成仁”的民族气节的诗句是：？。
6．《游山西村》既写出春社欢快，又表达了民风淳朴可爱的诗句是：，。
7．陶渊明在《桃花源记》中虚构了一个令人向往的世外桃源，千百年来散发着不朽的魅力。
文中表现桃源人与外人间隔，不知如今是何年何月之意的句子：，。
8．学校食堂的菜品公示栏上有如下内容：（4分）①请将公示栏中的两个错别字：改为；改为。
（2分）②就上面的错别字，你准备给食堂师傅提出来，请他们改正。
你将怎么说？（2分）。
二、阅读：（一）文言文阅读（15分）甲．课内文言文阅读（10分）《论语》九则孟武伯问孝。
子曰：“父母唯其疾之忧。
”子游问孝。
子曰：“今之孝者，是谓能养。
至于犬马，皆能有养；不敬，何以别乎？”子曰：“父母在，不远游，游必有方。
”子曰：“父母之年，不可不知也。
一则以喜，一则以惧。
”子曰：“巧言令色，鲜矣仁！”子曰：“德不孤，必有邻。
”子曰：“，。
”子曰：“君子坦荡荡，小人长戚戚。
”子贡问曰：“有一言而可以终身行之者乎？”子曰：“其恕乎！己所不欲，勿施于人。
”9.《论语》是记录的一部书，共20篇，是家经典著作之一。
（1分）10．解释下列加点的词语在文中的意思。
（2分）①是谓能养．（）②游必有方．（）③德不孤，必有邻．（）④君子喻．于义（）11．补全文中第七则写在下面横线上（2分）12．如何理解“德不孤，必有邻”？（2分）13．“己所不欲，勿施于人”是最早由儒家提倡的待人接物的处世之道。
请你联系生活体验，谈谈自己的观点。
（3分）乙．课外文言文阅读（5分）沐则心覆文公之出也①，竖头须②，守藏者也③，不从④。
公入⑤，乃求见，公辞焉以沐⑥。
新人教版八年级数学(下册)期末复习题及答案
新人教版八年级数学(下册)期末复习题及答案 班级： 姓名：一、选择题（本大题共10小题，每题3分，共30分）1．将直线23y x =-向右平移2个单位，再向上平移3个单位后，所得的直线的表达式为（ ）A ．24y x =-B ．24y x =+C ．22y x =+D ．22y x =-2．下列各数中，313.14159 8 0.131131113 25 7π-⋅⋅⋅--，，，，，，无理数的个数有（ ）A ．1个B ．2个C ．3个D ．4个3．对于函数y ＝2x ﹣1，下列说法正确的是（ ）A ．它的图象过点（1，0）B ．y 值随着x 值增大而减小C ．它的图象经过第二象限D ．当x ＞1时，y ＞04．如图，在四边形ABCD 中，∠A=140°，∠D=90°，OB 平分∠ABC ，OC 平分∠BCD ，则∠BOC=（ ）A ．105°B ．115°C ．125°D ．135°5．某旅店一共70个房间，大房间每间住8个人，小房间每间住6个人，一共480个学生刚好住满，设大房间有x 个，小房间有y 个.下列方程正确的是( )A ．7086480x y x y +=⎧⎨+=⎩B ．7068480x y x y +=⎧⎨+=⎩C ．4806870x y x y +=⎧⎨+=⎩D ．4808670x y x y +=⎧⎨+=⎩6．如果2a a 2a 1-+，那么a 的取值范围是（ ）A ．a 0=B ．a 1=C ．a 1≤D ．a=0a=1或715 ）A．点P B．点Q C．点M D．点N8．如图，每个小正方形的边长为1，A、B、C是小正方形的顶点，则∠ABC的度数为（）A．90°B．60°C．45°D．30°9．如图所示，下列推理及括号中所注明的推理依据错误的是（）A．∵∠1＝∠3，∴AB∥CD（内错角相等，两直线平行）B．∵AB∥CD，∴∠1＝∠3（两直线平行，内错角相等）C．∵AD∥BC，∴∠BAD+∠ABC＝180°（两直线平行，同旁内角互补）D．∵∠DAM＝∠CBM，∴AB∥CD（两直线平行，同位角相等）10．如图，已知∠ABC=∠DCB，下列所给条件不能证明△ABC≌△DCB的是（）A．∠A=∠D B．AB=DC C．∠ACB=∠DBC D．AC=BD二、填空题（本大题共6小题，每小题3分，共18分）1．分解因式：29a-=__________．21a+8a＝__________．3x2-x的取值范围是________．4．如图，一次函数y=﹣x﹣2与y=2x+m的图象相交于点P（n，﹣4），则关于x的不等式组22{20x m xx+----＜＜的解集为________．5．如图，直线AB，CD被BC所截，若AB∥CD，∠1=45°，∠2=35°，则∠3= _________度。
(必考题)初中英语八年级下册期末复习题(含答案解析)
一、选择题1．—Excuse me, could you please show me the time?—Sorry, I ________. My watch doesn’t work.A．mustn’t B．couldn’t C．needn’t D．can’t D解析：D【详解】句意：——打扰了，你能告诉我现在几点吗？——对不起，我不能。
我的手表坏了。
考查情态动词。
mustn’t禁止；couldn’t不能；needn’t不必；can’t不能。
“could you please do sth.”中的could是表示委婉的请求，回答时否定回答中用can’t表示“不能”，而不用couldn’t。
故选D。
2．—Volunteers are raising money to set up a special hospital for _______ old and sick. —What _______ unbelievable idea they’re coming up with!A．an; an B．the; a C．an; the D．the; an D解析：D【详解】句意：-----志愿者们正在筹集资金，为老年人和病人建立一所特别的医院。
----他们想出了一个多么不可思议的主意！考查冠词。
定冠词the用在形容词前表示一类人，或一群人，是一种复数含义，若做主语，谓语动词应用复数形式。
结合句意可知第一空填the；不定冠词（a、an）表示泛指、类指，仅用在单数可数名词前来表示"一"的意义，但不强调数目概念，只表示某类事物中的一个，a用于辅音音素开头的可数名词单数前，an用于元音音素开头的可数名词单数前。
结合句意可知第二句表示泛指，指“一个”多么不可思议的主意；故填an；选D。
【点睛】冠词是虚词，本身不能单独使用，也没有词义，它用在名词的前面，帮助指明名词的含义。
英语中的冠词有三种：定冠词、不定冠词、零冠词。
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期末复习题(二)
1.
2.按数的顺序填数。
(1)
(2)
二、在正确的答案下的○里打“√”。
1.
下图中哪枝铅笔长
?
2.9-7□
2 1 7 8
○
○○○
3.2＞□-8
9 10 18 11
○
○○○
4.比12大的数是几?
12 13 11 15 9
○○○○○
5.13是怎样组成的?
10个十和3个一3个一和1
○○
1个一和3个十13
○○
6.把0至9按从小到大的顺序排列，从0开始数，第7个数是几?
6 7 8 9
○○○○
7.小明和冬冬看一本页数相同的书，小明看了11页，冬冬看了8页，谁剩下的页数多?
小明多
○○
长方形有( )个；正方形有( )个；
三角形有( )个；圆形有( )个。
四、在( )
6+( )＝10 9+( )＝17 ( )+2＝12
( )+7＝15 5+( )＝12 16+( )＝19
五、在○里填上“＞”、“＜”或“＝”
17○20 13○11 8○10
5+8○14 -2○11 7+7○15
15-5○9 9○15 7+6○13
六、计算下列各题。
5+8+3＝9-6+4＝10+8-5
16-0-5＝3+9+2＝10-5+7
七、在○里填上数，使横、竖三个数相加的和是16
(1)一个加数是8，另一个加数是9，和是多少?
(2)被减数是10，减数是2，差是多少?
1.
2.
3.白兔和黑兔共15只，其中黑兔有5只，白兔有多少只?
4.小明有16本课外读物，捐给校图书馆后，还剩10本，小明捐给校图书馆多少本?
5.妈妈买回一袋巧克力，送给奶奶6块后，还剩8块，这袋巧克力原来有多少块?
6.同学们做了8个红色风车，4个黄色风车，6个纸船，同学们一共做了( )个风车。
7.玲玲的左边有12个人，右边有8个人，从左边移( )个人到玲玲的右边，玲玲就站在正中间了。