周末练习(12.20)

高一年级英语12月份周周练3第一题：单词拼写1.钢琴家，钢琴演奏者_________2.音乐家3.有时，不时_________4.停止；辞职_________5.才干；天才_________6.全世界的_________7.在某些方面_________ 8.身份，特性_________ 9.根_________10重新发现_________ 11.美；美貌；美人_________ 12.外貌_________13.剃，刮_________ 14.发型_________ 15.转换，转化_________16.百科全书_________ 17. 允许，许可_________18.普通的_________19.代，一代_________ 20.类型，种类_________ 21.往返，来回______22.独特的，唯一的_________ 23.贵族的；贵族_________24.移民的，移居的_________ 25.有责任的，应负责任的_________答案：1.pianist 2. musician 3.at times 4.quit 5.talent 6.worldwide7.in some ways 8.identity 9.root 10.rediscover11.beauty 12.appearance 13.shave 14.hairstyle15.transform 16.encyclopedia 17.permission 18.ordinary19.generation 20.type 21. back and forth 22.unique23.noble 24.immigrant 25.responsible第二题：课文挖空练习The famous classical¬¬¬¬¬___1__(钢琴家), Kong Xiangdong, surprised his fans last week by giving a concert combining classical music with Chinese folk music. “As a __2___(音乐家), playing the same music in different cities of the world is very boring,”say Kong.But it wasn’t always easy for the young Kong Xiangdong. His mother couldn’t buy him a piano __3___he was seven. She had to draw piano keys on a piece of paper____4__(为了，以便) he could learn to play as early as possible. The 5-years old Kong would___5___(v.练习) on the paper piano as his mother clapped the rhythm. He was made____6___( practise) the piano so much that, at times, he thought about _____7____(放弃).Because of Kong’s___8___(才能) and hard work, he became famous worldwide. But after years of performing, he became that in some ways he had lost his___9___(身份，个性，特质). This is why he went back to his roots and __10.___(v.重新发现) the beauty in Chinese folk music.Kong’s new experiment in Chinese folk music is so ___11___(重要的) to him that he even changed his ___12__(n.外貌). When he_13___(到达) his concert last week, he had__14___(剃光) all his hair!Whether Kong is changing his appearance or ___15____(v.转变，改变) his music, he is a pioneer in music today.答案：1. pianist 2. musician 3. until 4. so that 5. practise 6. to practice 7. giving up 8. talent 9. identity 10. rediscovered 11. important 12. appearance 13. arrived at 14. shaved of 15. transforming第三题：阅读理解A“Cool” is a word with many meanings. Its old meaning is used to express a temperature that is a little bit cold. As the world has changed, the word has had many different meanings. “Cool” can be used to express feelings of interest in almost anything.When you see a famous car in the street, maybe you will say, “It’s cool.”You may think, “He’s so cool,”when you see your favourite footballer. We all maximize (扩大) the meaning of “cool”. You can use it instead of many words such as “new”or “surprising”. Here’s an interesting story we can use to show the way the word is used. A teacher asked her students to write about the waterfall (瀑布) they had visited. On one student’s paper was just the one sentence, “It’s so cool.”Maybe he thought it was the best way to show what he saw and felt.But the story also shows a scarcity(缺乏) of words. Without “cool”, some people have no words to show the same meaning. So it is quite important to keep some credibility(可信性). Can you think of many other words that make your life as colourful as the word “co ol”? I can. And I think they are also very cool.1. We know that the word “cool” has had ______.A. only one meaningB. no meaningsC. many different meaningsD. the same meaning2. In the passage, the word “express” means “______.”A. seeB. showC. knowD. feel3. If you are ______ something, you may say, “It’s cool.”A. interested inB. angry aboutC. afraid ofD. unhappy with4. The writer takes an example to show he is ______ the way the word is used.A. pleased withB. strange toC. worried aboutD. careful with5. In the passage, the writer suggests(暗示) that the word “cool”______.A. can be used instead of many wordsB. usually means something interestingC. can make your life colourfulD. may not be as cool as it seems1. C 事实细节题。

2019-2020年高一下学期第12周数学周末练习姓名 班级 成绩一、填空题：本大题共14小题，每题5分，共计70分，请把答案填写在答题纸相应位置上1．不等式＜0的解集为 ▲ ．2．已知数列的前n 项和，则 ▲ ．3．在中，若 ，，，则___▲____．4．在中，则 ▲ ．5．已知等差数列满足：，.则数列的通项公式= ▲ ．6．已知等比数列｛b n ｝前n 项和S n =k3n+1,则k 的值为 ▲ ．7. 在中，，则中最大角的余弦值为 ▲ ．8．△ABC 中，设，则AB 的长 ▲9．若变量满足约束条件则的最大值为 ▲ ．10. 已知等差数列{}3260,n a a a a ≠中，公差d 且是和的等比中项，则= ▲ 。

１1．△ABC 中，则△ABC 面积的最大值为 ▲ ．12．若不等式≥对任意的正数总成立，则正数的取值范围为 ▲ .13．已知数列满足，若，则 ▲ ．14已知二次函数满足且3a ＞2c ＞b,则的取值范围是▲一中高一数学xx 春学期第十二周双休练习答题卡1、__________________ 6、__________________ 11、________________2、__________________ 7、__________________ 12、________________3、__________________ 8、__________________ 13、________________4、_________________ 9、_________________ 14、________________5、_________________ 10、_________________二、解答题：本大题共６小题，共计９０分．请在答题纸指定区域内作答，解题时应写出文字说明、证明过程或演算步骤。

1５．（本小题满分14分）在△ABC中，角A，B，C所对的边分别为a，b，c，且满足．（1）求角C的大小；（2）若a=2，△ABC的面积为．求边长c．１６．（本小题满分14分）已知数列{a n}是由正数组成的等差数列，S n是其前n项的和，并且a3＝5，a4·S2＝28．（１）求数列{a n}的通项公式；（２）若数列{b n}的通项b n＝，且，求数列{b n}的前n项的和T n．1７.（本小题满分1４分）某村计划建造一个室内面积为800的矩形蔬菜温室。

2019-2020年九年级英语下学期第12周末作业2一同义替换。

（共8小题，每题1分）( )1 Frank is happy with his grades in the final exam.A. joyfulB. satisfiedC. mad( )2 He is working hard and he won’t let you down.A. make you angryB. make you sadC. make you disappointed ( )3 — I heard from my e-friend Emma and she said she would visit me during the winter holiday.— That sounds nice. You can take her around our city.A. received a letter fromB. heard aboutC. heard of( ) 4. There is plenty of milk in the fridge, so you don’t need to buy it.A. enoughB. a large number ofC. some( )5. If you are well-prepared, the chance will e along in the end.A. disappearB. appearC. happen( )6. — What do you think the magician will hold out?I have no idea.A. put outB. turn intoC. take out( )7. —Have you got the ticket for the celebrated singer Wang Fei’s concert?Yes. I booked it on the Internet yesterday.A. well-knownB. popularC. female( )8. She seems to be very worried.A. appearsB. soundsC. feels( ) 9. All the ladies are full of praise for the service they received.A. plaintB. good remarksC. anger( )10.Mid-term test is ing we should not go near puter games.A. far away fromB. go awayC. stay away from ( )11. --- What will you do if you fail the English exam?I will work harder to get a good grade next time.A. don’t passB. are successful inC. arebored with( )12. I managed to get the chance to study in America. I am so happy.A. wanted to getB. succeeded in gettingC.started to get( ) 13. Most parents like to do whatever they can for their kids. Theythink that’s love.A. nothingB. somethingC. anything( ) 14. All contestants are required to arrive at the studio before 9 tomorrow morning.A. providedB. askedC. worked ( ) 15. The place needs a large quantity of money for people to drink.A. a littleB. a large amount ofC. a number of 1-5: BCABB 6-10:CAABC 11-15:ABCBB二( )1. It’s nearly five o’clock. We can hardly catch the bus.A. almost notB. almostC. nearly( )2. The little girl didn’t realize the danger ahead.A. was unaware ofB. didn’t find outC. wasaware of( ) 3.---Is everyone here today? ---No. Jack isn’t here because he is under the weather.A. not feeling wellB. feeling sadC.feeling sorry( ) 4. The plane has taken off. You’ve missed it.A. arrived hereB. didn’t workC. left the ground ( ) 5.The film was not at all what everyone thought it would be about.A. expectedB. plannedC. agreed ( ) 6. I suppose you will pass your exam because you always study hard.A. preferB. findC.think( )7. Tom di dn’t watch the FIFA World Cup because he has no interest in football.A. isn’t interested inB. isn’t good atC.doesn’t do well in( )8. Linda and Monica share the bedroom. And they always talk about their life happily.A. buy ... togetherB. use ... togetherC.spend ... together( )9. Do you want to go abroad?A. outB. to a foreign countryC. anothercity( )10. These are his personal possessions. You don’t have the right(权利) to get them.A. ownB. favoriteC. natural ( ) 11. She can get along well with all types of people.A. numbersB. kindsC. topics ( ) 12. Every year, our school holds several events to municate with other schools.A. public meetingsB. public speechesC. publicactivities( )13. I feel lonely when my parents are away from home.A. are atB. leaveC. stay ( )14. I was invited to her birthday party last night.A. reminded to eB. asked to eC. introduced to e ( ) 15.All the members in our family support each other.A. helpB. loveC. prefer1-5: AAACA 6-10:CABBA 11-15:BCBBA三( ) 1.You can’t go swimming unless you go with your parents. Because they will look after you.A. look atB. look overC. take care of( ) 2. The story of the old couple was very touching.A. movingB. feelingC. interesting ( )3. Jenny is watching a magic show, and her eyes are fixed on the hands of the magician.A. repaired byB. concentrated onC. moved from ( ) 4.Both the girls are crazy about fashion clothes and make-up.A. are very fond ofB. are good atC. don’t mind ( ) 5. The car is so expensive that we can’t afford it.A. are unable to takeB. are able to driveC. areunable to buy( ) 6. Let’s use the new machine instead of the old one.A. better thanB. in place ofC. displace( ) 7.They are searching for the lost boy in the forest.A. looking forB. waiting forC. looking up ( ) 8. If you want to be ahead of your classmates, you have to run as fast as you can.A. away fromB. better thanC. in front of ( ) 9. Don’t worry. We have plenty of time to get to the airport.A. a large amount ofB. a large number ofC. a few( ) 10. If you don’t know the question, you can put up your hand.A. riseB. raiseC. receive( )11.I like fruit as well as vegetables, because they are both good for my health.A. orB. andC. but( )12.The president works hard to develop the relationship between countries.A.make…worseB. make…betterC. make…smaller( )13. – What do you think of the film ,Linda ?–In general, It’s a good movie though it is a little long.A.At firstB. Generally speakingC. In a second( )14. Jack came at last ! We had waited for a long time!A. soonB. in the endC. early( )15.My puter is dead.A. is not aliveB. is brokenC. doesn’t work1-5: CABAC 6-10:BACAB 11-15:BBBBA四( )1. There is mountains of homework today.A. manyB. a littleC.plenty of( )2. I appreciate your help.A. enjoyB.understandC. am thankful for( )3. Lucy is a home bird.A. like shoppingB.like staying at homeC.is a housewife( )4. Tom eats nothing but fish.A. only eatsB. doesn’t eatC.eats a little( )5.We must help the people in the earthquake area in no time.A. on timeB. at onceC.for the time being.( )6. If you want to learn English well, you should practise it. Aboveall, you should keep doing it.A. Most importantlyB. After allC. Eventhough( )7.People give the movie a lot of reviews, and most of them are good.A. explanationsB. discussionsC.ments( )8. I have too much concern before my driving test. I think I need some help.A. angerB. worryC. pleasure( )9. I am dying to go abroad to study English. However, I don't have enough money.A. hate goingB. look forward to goingC. am used to going ( )10. The students will conduct an experiment in the laboratory tomorrow.A. carry outB. make upC. think of( )11. To be honest, I’d rather stay at home than go out with him.A. To be seriousB. To be fairC. To tellthe truth( )12.Every weekend a crowd of students e to clean the beach.A. a large group ofB. millions ofC. more andmore( )13.I have three basketballs. Besides, I have two footballs.A. Except forB. In additionC. paredwith( )14.He doubted if he would learn anything new from Marie.A. didn’t knowB. wasn’t sureC. asked( )15. --Look at the shopping window here. If I have enough money, I will treat myself to many toys.--Amazing! Me too.A. offer many toys to meB. buy many toys for myselfC. provide me with many toys1-5: CCBAB 6-10:ACBBA 11-15:CABBB五( )1. --Are you sure you can paint the fence without any help?--Please trust me and I will try my best to do the job well.A. believeB. followC. invite( ) 2. This Maths problem is too difficult for me to work out .A.askB. understandC. solve( ) 3. We may never know what took place that night.A. foundB. happenedC. came( ) 4. She is very hard-working in everyday work, so she always getspraise from theboss.A. daily B similar C. whole( ) 5. We all had a good time at the party.A. learnt a lotB. knew the timeC. enjoyedourselves( ) 6. The man who sets fire to destroy the forest will be sent intoprison.A. FindB. protectC. damage( ) 7. The people who were hurt in the accident were sent to the hospital immediately.A. at onceB. in timeC. now and then ( ) 8. In my opinion we must take action immediately to stop the factorypouringwaste water into the river.A. I thinkB. I agreeC. I support( ) 9. As a result of the greenhouse effect, the Earth’s temperatureis increasing.A. raisingB. risingC.changing( ) 10. Do you feel like a cup of tea?A. likeB. wantC. think ( ) 11. The scientist is doing experiments that no one has so far tried.A. as far asB. as long asC. up to now( ) 12. The doctor told my father to give up smoking .A. cutB. give offC. stop( ) 13. The post office is opposite to the station..A. at the back ofB. besideC. acrossfrom( ) 14. Hemingway is known as the writer of The Old Man and the SeaA. regardedB. famousC. acted( )15. The rain provides the crops with enough water to grow.A. takesB. buysC. gives1-5: ACBAC 6-10:CAABB 11-15:CCCBC六( ) 1. I regret that I made my mother angry and upset.A. forgetB. am sorryC. believe( )2. I was so relaxed in bed that I didn't want to get up.A. fortableB. shyC. popular( ) 3. His memory is so good that he can learn these new words without difficulty.A. reallyB. quicklyC. easily( ) 4.I found out that I wasn’t as sma rt as I thought.A. knewB. discoveredC. thought( ) 5. Don’t play a joke on that old man. It’s impolite.A. have a word withB. make a fool ofC. play a game with( ) 6. How many students joined in the sports meeting yesterday?A. got inB. made inC. took part in( ) 7. We have no idea how the birds find their way.A. know nothing aboutB. learn something aboutC. talkeverything about( ) 8. The luggage is so heavy. Could you give me a hand with it?A. ask me forB. remind me ofC. help me with( )9、Though the woman has been to Beijing twice ,she will go there once more in xx.A、again and againB、the second timeC、another time ( )10、Do you often help raise money for charity on your day off ?A、makeB、collectC、save( )11、At present, the weather in Yunnan is terrible. We all hope it’ll rain cats and dogs.A. animalsB. lightC. heavily( )12、My bike is out of order, so I can’t ride it, I must have it repaired this afternoon.A.badB. brokenC. mistake( )13. All the boys went to play basketball except Jack.A. includingB. withC. but( )14. Scientists don’t know how the trees municate with each other.A. learn aboutB. get things fromC. send messages to( )15. Please take a seat. Everything will be ready in a minute.A. lie downB. get downC. be seated1-5: BACBB 6-10:CACCB 11-15:CBCCC七( ) 1. The weather today is awful. Let’s stay at ho me.A. badB. hotC. harmful( ) 2. They makes jokes about the way I wear glasses.A. look aroundB. think ofC. laugh at( ) 3. I try to be on a diet. And I can’t eat too much meat.A. lose weightB. put on weightC. be on time ( )4. I’ll ask my father to return your call.A. return your telephoneB. e back with youC. call youback( )5. I wish all my dreams can e true.A. realizeB. bee realC. e real( )6. She studies very hard in order not to let her motherdown.A. make ... disappointedB. make ... angryC.make ... worried( )7.— How did you meet your classmate?I met him in the street by accident.A. by chanceB. at lastC. on time( )8. — I have great trouble in learning English .Could you help me:— Sure. I’d be glad to.A. thingB. interestC. difficulty( )9. In ancient times, only children from rich families could learn to read andwrite.A. In factB. In the futureC. A very longtime ago( ) 10. All of the students in our class are going to plant trees near our school except Susan, because she is ill.A. not includingB. not addingC. including( ) 11. Jenny is watching a magic show, and her eyes are fixed on the hands of themagician.A. repaired byB. concentrated onC. movedfrom( ) 12. It’s very convenient to use the puters to calculate.A. guess the answerB. work out the answerC. look for information( ) 13. There is no space in my room to put a book shelf.A. roomB. floorC. hall( )14. e on! The train is leaving, or we’ll miss it.A. Look overB. Hurry upC. Be careful ( )15. The Japanese army tried to capture China during a war from 1937 to 1945.A. talk toB. e over toC. take control of1-5: ACACB 6-10:AACCA 11-15:BBABC八( ) 1.They have searched for the house for hours, but they still can not find it.A. set forB. accused ofC. looked for( ) 2.It is my task to clean the classroom.A. workB. noteC. decision( ) 3. It’s a pleasure to go to the beach on a sunny day.A. a boring thingB. a relaxing thingC. a happything( ) 4. When the class is over, students can have a break.A. restB. drinkC. party( ) 5 Jack can’t make up his mind whether to go to college or get a job.A. chooseB. decideC. agree( ) 6. You cheated in the exam. You should feel ashamed of yourself.A. be happy aboutB. get bored withC. feel embarrassed about( ) 7.It is still pouring outside. You’d better stay in thehouse.A. snowing heavilyB. raining heavilyC.blowingstrongly( ) 8. Mary didn’t reply to me. It is so disappointing.A. give an answer toB. lend money toC. give anyadvice to( ) 9. He is still single.A. not marriedB. ableC. victory( ) 10. The woman turned to survey her daughter’s pale face.A. look after ... carefullyB. look at ... carefullyC. look up ... carefully( ) 11. I am dying to see the news tonight because we might be on TV.A. can’t wait toB. forget toC. refuse to( ) 12. Tom is a naughty boy. He always tricks others into doing something foolish.A. persuadesB. cheatsC. believes( ) 13, Please send the letter to the pany as soon as possible.A. at onceB. as usualC. slowly( ) 14. After the accident, he had no choice but to walk with the stick.A. chose toB. was willing toC. had to( ) 15. I believe that you will make it if you work hard.A. finish itB. done itC. be successful( ) 16.If you go on working like this, you will break down one day.A. startB. stopC. keep1-5: CACAB 6-10:CBAAB 11-16:ABACCC$30416 76D0 盐)39708 9B1C 鬜E25143 6237 户q27291 6A9B 檛430501 7725 眥37198 914E 酎40324 9D84 鶄_35859 8C13 谓。

2019-2020年七年级数学12周周末练习一、选择题一、选择题：1.下列方程中，是一元一次方程的是（ ）A. B. 2 C. D.2．已知是关于的方程的解，则的值是 （ ）．A ．B ．C ．D ．3．已知x ＝y ，则下列各式中：x －3＝y －3；3x ＝3y ；－2x ＝－2y ；y x＝1，正确的有( )A ．1个B ．2个C ．3个D ．4个4．下列说法正确的是( )A ．在等式ab ＝ac 两边都除以a ，可得b ＝cB ．在等式a ＝b 两边都除以c 2＋1，可得a c 2＋1＝b c 2＋1C ．在等式b a ＝c a两边都除以a ，可得b ＝c D ．在等式2x ＝2a －b 两边都除以2，可得x ＝a －b5．解方程2x －5＝3x －9时，移项正确的是( )A ．2x ＋3x ＝9＋5B ．2x －3x ＝－9＋5C ．2x －3x ＝9＋5D ．2x －3x ＝9－56. 若方程，则等于（ ）A.15B.16C.17D.347.一个两位数的个位数字与十位数字都是x ，如果将个位数字与十位数字分别加2和1，所得新数比原数大12，则可列的方程是（ ）A. C. ()()()10101210x x x x +-+-+=B. D. ()()10121012x x x x +++=++8．若与的和是单项式，则m 、n 的值分别是（ ）A ．m =2，n =2B ．m =4，n =1C ．m =4，n =2D ．m =2，n =39.某商人在一次买卖中均以120元卖出两件衣服，一件赚，一件赔，在这次交易中，该商人( )A.赚16元B.赔16元C.不赚不赔D.无法确定10．用“●”、“■”、“▲”分别表示三种不同的物体，如图所示，前两架天平保持平衡，若要使第三架天平也保持平衡，那么“？”处应放“■”的个数为（ ）A ．2个B ．3个C ．4个D ．5个二、填空题11．已知x 的4倍比x 的 23多5，则列出的方程是 ． 12. 若关于的方程是一元一次方程，则m=__________13．若2a －b ＝5，a －2b ＝4，则a －b 的值为 ．14．一个三角形三边长之比为3∶4∶5，最短边比最长边短6 cm ，这个三角形的周长为 cm.15.七、八年级学生分别到雷锋、毛泽东纪念馆参观，共589人，到毛泽东纪念馆的人数是到雷锋纪念馆人数的2倍多56人．设到雷锋纪念馆的人数为人，可列方程为_______ ______________________.16．某校学生志愿小组在“三月学雷锋”活动中，购买了一批牛奶到敬老院慰问老人．如果送给每位老人2盒牛奶，那么剩下16盒；如果送给每位老人3盒牛奶，则还少1盒．设敬老院有x 位老人，依题意可列方程为 ______________________ ．三、解答题17. （1）2213(25)7(2)4+--÷--⨯-； （2）化简求值：)2(2)2(2y x y x x --++，其中x =﹣2，y =1．？18.解下列方程: (1)3x －4x=3―(―1); (2);(3)2.4y-1.4y-3y=5.2-8. (3)19.已知方程2x-2=4的解也是关于x 的方程mx-1=x+2的解,求m 的解.20.我们知道，|a|表示数a 到原点的距离，这是绝对值的几何意义．进一步地，数轴上两个点A ．B ，分别用a ，b 表示，那么A ．B 两点之间的距离为AB=|a-b|或者|b-a|．（思考一下，为什么？），利用此结论，回答以下问题：（1）数轴上表示2和5的两点之间的距离是___________，数轴上表示-2和-5的两点之间的距离是_________，数轴上表示1和-3的两点之间的距离是__________；（2）数轴上表示x 和-1的两点A ．B 之间的距离是_______________，如果|AB|=2，那么x 的值为_______________；（3）当表示数x 的点在－2与3之间移动时，|x ﹣3|+|x+2|的值总是一个固定的值 为： 。