易错练习2

定语从句专项练习2（重难点，易错点及错题重现）1.Til never forget the days we worked together.2.Til never forget the days we spent together.3.1went to the place I worked ten years ago.4.1went to the place I visited ten years ago.5.This is the reoson he was late.6.This is the reason he gave me.7.The reason he gave me is not reasonable.8.The reason he is late is reasonable.9.When you read books, you had better make a mark at thespot you have any questions.10.When you read books , you had better make a mark you have any questions.11.He did all / everything he could to help me.12.This is the very thing I am after.13.We talked about the men and the things we remembered at school.14.He is the only man can do the work.15.This is the first thing I want to say.16.He is the finest man I have ever worked with.17.Who is the man spoke to you at the gate.18.Which is the star is nearest to the earth.19.Is there anything else you want to say?20.Any person has the money can join the group.21.He often speaks the role he played in the play,made others upset.22.He opened the door, in front of sat a boy.23.The man to I spoke is a famous scientist.24.The boy mother is dead was brought up by his father.25.This is the teacher teaches us maths.26.She is the girl I met at the party.27.The money is in the wallet is mine.28.The money my mother gave me yesterday has been stolen.29 .This is the house my sister lives in.30.This is the room they once lived.31.Til never forget the day I joined the army.32.This is the reason I failed.33.The pencil he wrote was broken.34.She has three children, all are at school.35.China has a lot of famous writers, one is Lu Xun.36.He has lost the key to the box the papers arekept.37 My glasses,I was like blind man, fell to the ground and broke.38. The age children can go to school is seven.39The bike he went to work was stolen last night.40.This is the factory I once worked.41.The house he spent 100,000 yuan is very beautiful.42.The house he paid 100,000 yuan is very beautiful.43.This is the hero we are proud.44 .1 can't find the very pen I wrote that letter.45. Do you know the boy your mother is talking?46.1still remember the day I first got to Paris.47.He gave me some novels I am not very familiar.48.The person you should write is Mr. Hall.49.1lost the book there are five color pictures.50.The day we can send men into space has come at last.51.Recently I bought an ancient Chinese vase,（它的价格）was very reasonable.52.The headmaster（他的学校）Mr. Brown teaches in is a man who works hard53.1don't know the student Tom quarreled yesterday.54.1don't know the thing Tom and Mary quarreled yesterday.55. This is the hotel you will stay.56.She is the girl I went there.57. This is the house my sister lives58.1 will never forget the day I first went to school.59.1 will never forget the day we spent in Beijing.60.The house we visited is being repaired now.61.The house Luxun once lived is being repaired now.62.Is this the factory we visited last week?63.Is this factory we visited last week?64.Is this the factory his father works?65.The reason he was late was that his mother was ill.66.The reason he gave for his being late was his motherwas ill .67.The man you shook hands just now is our headmaster.68.The room my family live used to be a garage.69.Did you find the pen I wrote just now?70.Did you find the paper I wrote my letter?71.Did you find the composition I wrote just now?72.1will never forget the day. I first went to school on the day.73.1will never forget the day I first went to school.74.1will never forget the day I first went to school.75.（k匕较）I will never forget the year I first went to school.Last week we visited the factory. My brother works in it.Last week we visited the factory my brother works.Last week we visited the factory my brother works in.Last week we visited the factory my brother works.76.（比较）He didn't come for the reason. The reason was not clear The reason he didn't come was not clear.The reason he didn't come was not clear.77.All is useful to us is good.A. whichB.whatC.thatD.whether78.Is this factory the foreign visitors visited last week?A.whereB.thatC.whichD.the one79.She will never forget the days she spent in Beijing.A.whenB.whatC.whichD.why80.Here is the bicycle in the shop.A.that you saw itB.that saw itC.you sawD.you saw it81.Those to take part in the game write down your names, please.A.whoB.who wantC.that wants D want82.I,your good friend, will try my best to help you out.A.who isB.what isC.what amD.who am83.He is not the man he used to be.A.whatB.thatC.whichD.as84.This is the only thing I can do now.A.whatB.whichC.thatD.all85.1don't like the way he spoke to me.A.by thatB.whatC.by whichD./86.It is the library I borrowed the book.87.is from this library I borrowed the book.88.---Where did you last see Mr. Smith?---It was in the hotel I lived.89.We all have heard the news our team won.90.We don't believe in the news he told us yesterday.91.The place the bridge is supposed to be built should be the cross-river traffic is the heaviest.92.We should go to the place we are most needed.93.We should go to the place needs us most.94.It was October we met in Lucy for the first time.95.It was in October we met in Lucy for the first time.96.This is the most exciting football match I have ever seen.97.It is the third time you have been late this week.98.The reason he didn't attend the meeting was that his mother was seriously ill.99.The reason he didn't attend the meeting was that his mother was seriously ill.100.The reason for his failure is he didn't work hard.。

班级姓名学号分数Unit 2 How often do you exercise?（时间：100分钟，满分：100分）第一部分选择题一、单项选择(本大题共15小题，每小题1分，共15分)1．-Can you go swimming with me next Sunday?-Sorry, next week is ____________ for me.A．free B．good C．enough D．full 2．You can buy almost everything the Internet, and it’s very easy.A．into B．for C．at D．on 3．Gina often helps her mother ________ housework in her free time.A．in B．to C．at D．with 4．He never goes to the dentist for ________ cleaning.A．teeth B．headC．food D．mind5．The old man starts ________ sports at five every day.A．playing B．playsC．played D．play6．Katrina wants to keep ________，but she is always in bad ________．A．health; healthy B．healthy; healthC．health; health D．healthy; healthy7．Lucy is a good student.She is ________ late for school.A．hardly ever B．oftenC．always D．usually8．________ Simon does well in his studies, he still works really hard.A．Although B．BecauseC．/D．When9．The old woman wants us ________ her clean the house.A．help B．to helpC．helps D．helpingA．May be B．MaybeC．May is D．Maybe is11．I was ________ that they never used the Internet.A．surprise B．surprisingC．surprised D．surprises12．Grace thinks _________ is the best way __________．A．exercise, relax B．to exercise, relaxingC．exercising, to relax D．exercising, relax13．Taiji is my favorite and I often play it ______ healthy.A．to keep B．keepsC．keeping D．kept14．—________ do your parents take exercise, William?—About three times a week.A．How long B．How muchC．How soon D．How often15．Some children ________ drink milk ________ all.A．doesn’t; in B．don’t; atC．isn’t; of D．doesn’t; at二、完型填空(本大题共10小题，每小题1分，共10分)Nick is a 14-year-old schoolboy. His life is full of exams and studies on weekdays. He has __16__ free time. He thinks playing computer games __17__ the best way to make him relaxed. When he has free time, he sits in front of the computer. Just __18__ that way, he doesn’t eat or drink for several hours.Last weekend, he played games on the computer again. He was too __19__ and didn’t want to move. He didn’t have __20__ for six hours. When he had to go to the bathroom, he found he could not move. He was taken to the __21__ . The doctor told him he should have a good rest and __22__ doing sports.After coming back from the hospital, Nick follows the doctor’s __23__ . He often plays soccer with his friends. __24__ sometimes he still plays computer games on weekends, he __25__ does it for long. Now he lives a happy and healthy life.16．A．much B．few C．little D．a few17．A．be B．is C．was D．are18．A．for B．on C．in D．since20．A．nothing B．anything C．something D．everything 21．A．office B．room C．hospital D．house 22．A．take out B．take care of C．pay attention to D．look forward to 23．A．advice B．habits C．dreams D．hobbies 24．A．And B．Unless C．Because D．Although 25．A．ever B．never C．often D．always三、阅读单选(本大题共10小题，每小题2分，共20分)AToday is Sunday. What are people doing?26．What is the teacher doing?A．She is calling her best friend.B．She is taking a bus to the zoo. C．She is telling funny stories to students.D．She is giving students an English class. 27．The job as a policeman is ________ according to the passage.A．dangerous and boring B．busy and boringC．dangerous and busy D．busy and tired28．Where does the third person work?A．In a post office.B．At school.C．In a restaurant.D．In a hospital. 29．What is the fourth person doing?A．Singing a beautiful song B．Shouting at the singer30．Which of the following is TRUE?A．The last person works in a post office.B．Kate doesn’t go to work on Sunday.C．Kate doesn’t want to take a bus to the zoo.D．The last person is a singer.BHealthy eating is not about strict nutrition（营养）and staying very thin. It’s about feeling great, having lots of energy and keeping yourself as healthy as possible. Healthy eating begins with learning how to eat smartly. It’s not just what you eat, but how you eat. Learning the habits of healthy eating can help you gain more energy. You can add your food choices and learn how to plan a healthy diet.Here are some useful steps that can help you make a change from now on.Step 1: Start slowly and make changes to your eating habits.Step 2: Try not to think of certain kind of food as “off-limits（禁止探讨的）”.Step 3: Take time to eat your food and enjoy meal-time（进餐时间）.Step 4: Eat breakfast and eat smaller meals during the day.Step 5: Eat more healthy vegetables and whole grains.Step 6: Eat less sugar and salt.Plan your healthy diet in a number of small steps, rather than in one big change. If you approach the change step by step, you will have a healthy diet sooner than you think.31．The underlined word “gain” in the first paragraph can be best replaced by “________”A．get B．take C．buy D．find32．What is healthy eating?A．It is about staying thin.B．It is about having lots of energy.C．It is about strict nutrition.D．It is about delicious food.33．What is NOT the step to plan a healthy diet?A．Try to know the food you can’t eat.B．Change your eating habits little by little.C．Try to eat food of whole grains.D．Spend longer time enjoying your meal.34．The underlined word “approach” in the last paragraph means “_______” in Chinese.A．帮助B．接受C．接近D．前进35．What is the best title of the passage?A．Eating Healthy Food Every Day B．Enjoying Your Mealtime to Keep HealthyC．How to Change Your Eating Habits D．Steps on Healthy Eating第二部分课本知识应用36．I’m so sleepy (困倦) that I can h____ keep my eyes open.37．John plays computer games o_____ a week, only on Saturday night.38．—Are you free tomorrow, Gina?—No. Tomorrow is quite f_____ for me. I have many things to do.39．He has to do some ______ (家务劳动) at home.40．These ______ (节目) are very interesting.41．A____ she is very young, she can play the piano very well.42．If you don’t want to get fat, eat 1____ meat and take more exercise.43．I feel sad because my pet dog d____ yesterday.44．Mo Yan is one of the most famous (最著名的) ______ (作家) in China.45．In our class, eighty-five ______ (百分之……) of the students watch TV every day.五．用所给单词的正确形式填空(本大题共10小题，每小题1分，共10分) 46．My mother goes to Beijing ______ (two)a year.47．She often ________ (help)her mother _______(do) housework.48．I _______ (hard)ever see him.49．Tom _______( watch)TV every day. Look!He ______ (watch)TV now. 50．Mary always________(exercise)in the morning.51．I was __________(surprise) that I met one of my old friends at the station. 52．Peter goes online three __________(time) a week.53．My love for you will never __________(die).54．Jenny bought some __________(magazine) yesterday.55．Our school got 25 __________(point) in the basketball game.六、完成句子(本大题共5小题，每小题2分，共10分)56．她每周使用网络不到两次。

北师大版数学四年级下册第4单元《观察物体》易错精选强化练习题(2)姓名：__________ 班级：__________考号：__________一、单选题（共8题；共24分）1.从正面观察，所看到的图形是（）A. B. C.2.下面第（）种情况从左面看到的图形是。

A. B. C.3.从上面看到的形状不同的是（）A. B. C.4.如图，从（）看到的形状是相同的。

A. 上面和左面B. 前面和右面C. 前面和左面5.由7个小正方体搭成的立体图形，从正面看到的形状是，从左面看到的形状是，这个立体图形是（）。

A. B. C.6.从正面观察所看到的图形是（）A. B. C.7.用三个同样大小的正方体横着排成一个长方体，从侧面看到的形状是下面( )个图形。

A. B. C.8.一个物体由若干个小正方体组成，从上面看到的是，从侧面看到的是，拼成这个物体至少需要（）小正方体。

A. 6B. 7C. 8D. 9二、判断题（共5题；共15分）9.4个正方体摆成如图所示，从正面、右面看到的形状是长方形，从上面看到的形状是正方形．（）10.从正面和右面看都是。

（）11.我们看到的物体的一个面是正方形，这个立体图形一定是正方体．（）12.这个立体图形从每个方向看到的形状都不同．（）13.一个正方体，无论从任何一个面看，看到的都是正方形．（）三、填空题（共6题；共16分）14.一个正方体或者一个长方体，从一个方向看，最多能看到它的________个面？最多能看到它的________个角？拿一个物体实际观察一下．15.看图回答这是在________号位看到的图形？16.一个用小立方块摆成的立体图形，从上面看形状是，从左面看形状是，摆这个立体图形至少用________个小立方块，最多可以用________个小立方块。

17.从________面看是，从________面看是，从________面看是。

18.从正方体、长方体、圆柱的右面看各看到什么图形，选一选。

北师大第二单元《线与角》知识点知识点1：直线（无端点）1、经过一点可以画无数条直线；经过两点只能画一条直线，即两点确定一条直线。

2、两条直线相交，只有一个交点3、直线没有端点，它可以向两端无限延伸不可以度量其长度。

4、直线l直线公理：经过两点有一条直线，并且只有一条直线。

简述为：两点确定一条直线。

易错练习1：（1）小明画了一条直线，它的长度为6厘米（判断对错）；（2）过任意一点可画出（）条直线．A 1B 2C 无数知识点2：射线（一个端点）1、在直线上某一点起朝向一边的部分叫做射线，这一点叫做射线。

这一点叫做射线的端点。

2、射线只有一个端点，只能向一端无限延伸，不可以度量其长度3、注意：①表示端点的字母一定要写在前面，使字母的顺序与射线延伸的方向一致，如图1射线OA不能表示成射线AO；②同一条射线是指射线的端点相同，而延伸方向也相同的射线。

如图2，射线OA与射线OB表示同一条射线；③两条不同射线是指端点不同的射线，或者是指端点相同但延伸方向不同的射线，如图2中，射线OB与射线AB不是同一射线。

易错练习2：(1)(2)手电筒发出的光线属于（）A.直线B.射线C.线段知识点3：线段（两个个端点）1、直线上任意两点间的部分叫做线段。

这两点叫做线段的端点。

2、线段有长有短，可以度量其长度3、在连接两点的所有连线中，线段最短（重点）两点之间，线段最短知识扩展：长度：两点之间的距离叫做长度直线、射线、线段区别图形名称特征端点表示方法用两个大写字母或直线向两端无限延伸无一个小写字母表示用两个大写字母或射线只向一方无限延伸1个一个小写字母表示用两个大写字母或线段有实际长度，可延长2个一个小写字母表示易错练习3：(1)下面图形，（）是线段．A.B.C.(2)指出下图中有多少条线段、直线、射线(3)判断下列说法是否正确。

1）两点之间，直线最短。

（）2）直线比射线长。

（）3）直线AB大于直线CD。

（）（4）画一画．1）画一条长4厘米6毫米的线段．2）画一条比57毫米少2厘米的线段．（5）如图所示，甲、乙之间有四条路可走，那么最短线路的序号是（）A.①B.②C.③D.④(1)定义：同一平面内，将一个图形上的所有点都按照某个直线方向做相同距离的移动，这样的图形运动叫做图形的平移运动，简称平移。