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2017七下Unit1-12练习题

2017七下Unit1-12练习题
2017七下Unit1-12练习题

Unit1

1.I like music,I want_________(join) the music club.

2.________ does she want to join?

--An art club.

A.How many clubs

B.What subject

C.What club

D.What time

3.John is not a good_________(sing),but he would like to have a try.

4.Jack often plays _______piano and he wants to be a pianist when he grows up.

A.a

B.an

C./

D.the

5.Miss Wang loves her students and she is also good ________their parents.

A.at

B.to

C.for

D.with

6.Gina cut her finger just now,_______she didn’t cry.

A.but

B.and

C.or

7.Please call us _____238-8977.

A.at

B.on

C.in

D.with

8.Hey !Sally! Please help your mother________dinner this afternoon.

A.to make

B.makes

C.making

D.made

9.They often go to this clothes store _____weekends.

A.in

B./

C.on

D.of

10.How happy you are! May I _________ you?

A.take part in

B.join

C.enter

D.take part

11.Please ______us a story,Granny.

A.speak

B.tell

C.say

D.talk

Unit2

1.--_______do you do homework? --At 5:30 p.m.

A.What

B.Where

C.What time

D.How

2.Bill u__________gets home at 6:00,but today he didn’t get home until 7:00.

3.Many parents have to ________ early to make breakfast for their kids.

A.get up

B.stay up

C.give up

4.The 3-D film The Angry Birds in Chinese cinemas ______May 20,2016.

A.on

B.at

C.in

D.to

5.The Blacks usually have milk and bread ______breakfast.

A.for

B.on

C.about

6.--_______do you usually help your mom with housework? --On weekends.

A.What

B.When

C.Why

7.The flight was delayed by the storm,_____the passengers had to wait at the airport.

A.but

B.or

C.so

D.for

8.Mary got hurt in P.E. class .We sent her to the hospital_________(quick).

9.A stupid man tells a woman to shut up,while a wise man tells her that her mouth is quiet beautiful _____it is closed.

A.unless

B.since

C.when

D.though

10.What time does Jane _________after school?

A.do her homeworks

B.does her homework

C.do her homework

11.In the evening,I either watch TV ____ play computer games to relax myself.

A.or

B.and

C.nor

12.—Mum,what are you cooking in the kitchen? It _____so good. ---Fried noodles.

A.smells

B.tastes

C.sounds

13.He likes dogs,but she likes cats _________.

14.Scott has an interesting _________.He works at a radio station.He has much _______to do.

A.job;work

B.work;job

C.job;job

D.work;work

15.---I can’t watch TV on school days .What about you,Judy?

--- I can't, ________.

A.again

B.too

C.either

D.also

16.At school,I have to _______ a school uniform.

A.put on

B.wear

C.in

D.dress

Unit3

1.I usually ride____ bike to school.But this morning ,I went to school by _____bus.

A.a;the

B.the;a

C./;a

D.a;/

2.---When will Mr. Green ____Beijing?

---In a week.

A.reach

B.get

C.arrive

https://www.wendangku.net/doc/d610505143.html,e

3.---Where were you born,Michael?

---I was born in a small village with only three _______people.

A.hundred

B.hundreds

C.hundreds of

4.---______is it from your home to school?

---It is about ten minutes’ walk.

A.How long

B.How far

C.How many

D. How much

5.The local community center is open ______Monday to Saturday.

A.in

B.from

C.for

D.on

6.---Could you tell me _____it takes to walk to the Disneyland?

---About twenty minutes.

A.how far

B.how long

C.how often

D.how soon

7.Mount Xiaolei is not far away from here,but it will still take us a few hours ______there by bike.

A.getting

B.to get

C.got

D.get

8.It is necessary _____ people to have food and water every day.

A.of

B.for

C.with

9.She _______speaking in front of many people because she is shy.

A. is afraid of

B.enjoys

C.likes

D.is good at

10.---I like rain _____it makes me feel cool and relaxed. ---So do I .

A.or

B.so

C.but

D.because

11.It’s our duty _______our hometown clean and beautiful.We must do something for it. Akeeping B.keeps C.to keep

12.Don’t look at me like that! I’m telling you the ________(true).

13.We all believe that the Chinese Dream will _____ _________.

14.---________Disney amusement parks are there in China? ---Two

A.How many

B.How often

C.How soon

D.How long

15.---You play the piano so well.________do you take piano lessons?

---I go to piano lessons twice a week.

A.How long

B.How many

C.How often

D.How much

16.There are ______apples on the tree.

A.much

B.many

C.lot of

D.a lot

17.Sleeping is a popular way to relax ______students.

A. on

B.among

C.about

D.between

Unit4

1.Tommy,________play basketball in the street next time.You may get hit by a car.

A.do

B.don’t

C.must

D.mustn’t

2.–Mum,must I clean my room? ----No,you_______

A.mustn’t

B.needn’t

C.can’t

3.As the students,we have to follow the rules and come to school ___________.

A.next time

B.on time

C.in time

4.–Must I wait here all morning?I have a lot of work to do.

–No,you ________.You may be back in the afternoon.

A.mustn’t

B.can’t

C.don’t have to

5.--I have ___________ homework to do every day. –Me,too.

A.too many

B.too much

C.much too

D.many too

6.My English teacher is always strict_________us.

A.in

B.at

C.with

D.about

7.For our own safety,It’s important to _________the traffic rules on th e way to school.

A.follow

B.change

C.make

D.break

8.--I’ll have an important interview tomorrow.I hope I will succeed. --___________

A.Good luck.

B.It’s all right.

C.Have fun.

9._____to smile at your life when you are in trouble,and you will soon be happy again.

A.Try

B.To try

C.Trying

D.Tried

10.You can’t play the guitar in the classroom.(改为祈使句)

_____ ________the guitar in the classroom.

11.–Do you like the songs by Taylor? --Yes,Country music _______nice and full of feelings.

A.sounds

B.listens

C.hears

D.looks

12.–I’m sorry,Mr. Hu.I _______my English exercise book at home.

–It doesn’t matter.Please rememb er ________it here this afternoon.

A.forgot;to bring

B.left;to take

C.forgot;to take

D.left;to bring

13.–I’m feeling terrible!I have a bad cold. --_______.You’d better see a doctor at once.

A.I’m afraid not.

B.Sorry t o hear that.

C.Sounds great.

D.You are right.

Unit 5

1.--____do you like ping-pong? --Because it is relaxing.

A.How

B.When

C.Why

D.Where

2.--I feel upset because I am too heavy. --_______do more exercise to lose some weight?

A.Why don’t

B.Why not

C.Why not to

3.I like giraffes because they are __________smart.

A.kind of

B.a kind of

C.kinds of

D.of kind

4.Paul stayed up late to watch the soccer game last night and now he feels ___________.

A.sleep

B.asleep

C.sleepy

5.Elephants have good memories ,They can walk for a long time and never __________.

A.get married

B.get mad

C.get lost

6.They are going to buy a house ________a garden and a garage.

A.in

B.with

C.at

7.May wild animals are___________.It’s time for us to do whatever we can to protect them.

A.on duty

B.on show

C.in order

D.in danger

8.Our country is taking action to__________air pollution.

9.Look at the model plane _____by my father!It looks so nice.

A.makes

B.made

C.making

D.to make

10.--________do you go to the music club ? --Because I like singing and dancing.

A.What

B.How

C.Why

D.When

11.Boys and girls ,do n’t forget __________your homework here this evening.

A.taking

B.to take

C.bring

D.to bring

Unit6

1.—What are the children doing under the big tree?

--They ___________ and playing games here.

A.dance

B.will dance

C.are dancing

D.danced

2.When I got into the room,Green was talking _____ the phone.

A.on

B.with

C.to

D.in

3.She is doing her homework.(改为一般疑问句)

____she________her homework?

4.Don’t _________the chance when you can catch it,or you’ll regret.

A.guess

B.miss

C.remember

D.allow

5.—Anita,where is your brother?

--He ___________ out in the garden with a group of kids.

A.plays

B.played

C.is playing

D.has played

6.My sister and I don’t watch TV in the evening,We_________books.

A.plays

B.played

C.is playing

D.has played

7.He was born in Germany.but he has made China his___________.

A.family

B.address

C.house

D.home

8.--There is on salt left,Jim.Would you like to get_________? --OK,mum.

A.it

B.one

C.some

D.any

9.—Which of the two T-shirts would you like to choose?

--Both.Then I can give one to my brother and leave__________ to myself.

A.another B,the other C.other

Unit7

1.---________is the weather ________in Wuhan in summer? ---It’s hot.

A.What;/

B.How is

C.How;/

D.What;like

2.It’s sunny in Beijing today.(就划线部分提问)_________________________________________

3.---How is it going? ---I am the last in the English test.

A.Great

B.Very good

C.Terrible

D.Not bad

4.---I am going to be a teacher. ---_____________________________

A.You are welcome

B.That’s al l right.

C.Sounds like a good idea

D.Have a good time

5.The teenagers had _____ good time in the summer camp in their sister school.

A.a

B.an

C.the

D./

6.I am having a great time ___________with some American friends.

A.to play

B.playing

C.play

7.---Hi,Jack,could you come to my English party? ---Sorry,__________.I have to look after my little sister at home.

A.must

B.could

C.can’t

8.These people dresses themselves in the bloody shark suits,They tell people___________shark fins in order to protect

A.eat

B.to eat

C.not eat

D.not to eat

9.---There is a beautiful park near your school,____________?

---Yes,I often go walking there.

A.is there

B.isn’t there

C.are there

D.aren’t there

Unit 8

1.__________some milk in the cup.

A.There are

B.There has

C.There is

D.There have

2.---Is there a watermelon on the table? ---________________.

A.Yes,there is.

B.Yes,it is .

C.No,there is.

D.it,isn’t

3.Anna likes to go to the zoo and watches the monkeys __________around on weekends.

A.climb

B.climbing

C.to climb

4.Taiji is my favorite and I often play it _________healthy.

A.to keep

B.keeps

C.keeping

D.kept

5.Could you please _________your MP3 a little ? Your baby sister is sleeping.

A.turn up

B.turn down

C.turn on

D.Turn off

6.You can walk _______the street,and then turn right at the third crossing.You won’t miss is.

A.by

B.along

C.straight

D.for

7.My daughter enjoys__________ stories about historical people.

A.read

B.reads

C.reading

D.to read

8.---Oh,my god! I’ve left my keys in the room.I’ll have to get in______the window.

A.past

B.over

C.across

D.through

9.There is a playground ____________ the library.

A.in front

B.in the front of

C.in the front

D.in front of

10.Before stamps,people didn’t _______for the letters they sent,but for the letters they received.

A.pay

B.cost

C.spend

D.take

Unit9

1.---What does your classmate look like? ---_______________.

A. He is from Australia.

B.He is tall and of medium height.

C.He is very nice to others.

D.He has a pair of blue shoes.

2.---Bill,does your sister have brown hair or red hair? ---__________.She takes after my mother.

A.Yes,she does.

B.No,she doesn’t

C.Brown hair

D.I don’t know.

3.I_________ the shops.Can I get you anything ?

A. go to

B.went to

C.have gone to

D.am going to

4.---Can you tell me_________? ---He lives in Shanghai.

A.where Mark lives

B.where does Mark live

C.where Mark lived

D.where did Mark live

5.---Do you want to join a sports or a music club? ---_____________.

A.Yes,I do.

B.No,I don’t

C.A music club

D.Yes,a sports club.

6.I have__________ friends,so I feel sad.

A.few

B.a few

C.little

1.Would you like some tea? ---________________

A.Yes,please.

B.The same to you.

C.Me,too.

D.My pleasure.

2.----________________? ---I’d like mutton and t omato noodles.

A.Would you like a large bowl

B.What kind of noodles would you like

C.Do you like noodles?

D.What size would you like

3.There are fifty ___________ in our school.They are all friendly to us.

A.woman teachers

B.women teacher

C.woman teacher

D.women teachers

4.----_________bowl of dumplings would you like? ----I’d like a large bowl.

A.What color

B.How far

C.What size

D.How big

5.Many teenagers don’t like to talk with their parents .But I am _________them,I love to share my joy and sorrow with my parents.

A. the same as

B.different from

C.interested in

D.angry with

6.---I think I’ll take a bus to meeting. ---The bus?If you __,you will be late.

A.do

B.have done

C.will do

7.---Kangkang,could you tell me how to cook noodles?

---OK,First,you should ________ ham,cabbage and onions finely.

A.cut up

B.cut down

C.cut off

8.---Can I help you ,madam? ---I want _________.

A.two boxes of apple

B.two glass of water

C.two bowls od porridge

9.In our city there __________a number of cars and the number of them________growing larger and larger.

A.are;is

B.have;is C,is;are.

Unit11

1.---Did Billy and Anna find a way out at last? ---Yes,they________a plan and did it.

A.were working out

B.worked out

C.are working out

D.have worked out

2.---What did you John do last weekend ? ---________________.

A.It was a great trip.

B.He didn’t think so.

C.We enjoyed a lot

D.He went to play basketball with Tom

3.She__________ some strawberries on the farm.That was interesting.

A.made

B.took

C.put

D.picked

4.---I’ll have a ten-day holiday.But I don’t know ______. ---How about Paris?

A.what to do

B.where to go

C.when to go

5.We went boating,went to cinema ,visited the museum and had a big meal yesterday._________it wa an exciting day.

A.In all

B.In the end

C.At last

D.All in all

6.---Have you read the book Harry potter?

---Sure.Eric is also___________it and we become friends becomes friends because of that.

A.proud of

B.afraid of

C.serious about

D.interesed in

7.---Where did you go last weekend? ---I_____to the Great Wall.

A.go

B.went

C.will go

D.have gone

8.Helen is new here,so we know ____________about her.

A.nothing

B.something

C.anything

D.everything

Unit12

1.---______angry Kangkang looks!What happened?

A.How

B.What

C.What an

2.Don’t ________ late,Betty.You have to go to school early tomorrow.

3.The school parts meeting will be ________ because of the heavy rain.

A.put up

B.put on

C.put off

4.They spoke ________quietly ________I could hardly hear them.

A.such;that

B.so;that

C.neither;nor

D.both;and

5.---__________,Bill!It’s time to go to school.

A.Wake up

B.Look up

C.Make up

6.---___________did you visit Taiwan with,Sarah? ---My parents.We had a good time there.

A.What

B.Who

C.Where

D.When

7.----Have you read this book? ----Yes,I_______it two weeks ago.

A.is reading

B.have read

C.will read

D.read

七下英语期末模拟试题

英语期末测试卷(七下) A卷 一、选择填空。(共20分,每小题1分) ( )1. After dinner he often ________ in the park. A. take a walking B. take a walk C. taking a walk D. takes a walk ( )2. What language does she ________ ? A. tell B. speak C. talk D. say ( )3. She ________ the teacher carefully, but didn’t ________ anything. A. listens to, hear B. listened to, hear C. hears, listened to D. hears, listens to ( )4. -----Do you know what they did over the weekend? -----They ________. A. play soccer B. goes to movies C. went shopping D. stay home ( )5. He didn’t have ___ money for a taxi, ___ he walked back to the hotel. A. any, and B. much, because C. any, so D. some, so ( )6. The strict teacher often makes ________ very tired. A. we B. our C. us D. ours ( )7. ---_____? ---It’s cloudy. A. How’s the weather like in Shanghai B. How’s the weather in Shanghai C. What is the weather in Shanghai D. Which is the weather in Shanghai ( )8.There ________ a ruler and two pens on the desk. A. is B. are C. am D. be ( )9. One of my ________ is from the USA. A. dictionary B. dictionaries C. dictionarys D. dictionaris ( )10. What does you brother do? . A. He works very hard. B. He is outgoing and friendly. C. He is a shop assistant. D. He is tall with curly hair. ( ) 11. On Sunday morning I helped my mother ____ the cooking. A. do B. to doing C. does D. doing ( )12. I had a busy weekend. I saw an interesting talk show and a book about history. A. read B. reads C. reading D. to read ( )13. What ____ Tom and his mother like ? A. does B. do C. is D. are ( )14. Where _____ your English teacher from? A. does B. is C. do D. are ( )15. Tom can ______ some vegetables at the market. A. buys B. buying C. buy D. to buy ( )16. Please _______ in class, boys and girls. Let’s begin our class. A. eat B. not talk C. don’t talk D. not sing ( )17. His dog was lost, that made him ______. A. feel sad B. to feel sad C. feel happy D. to feel happy ( )18. We went to the beach ______ Sunday afternoon last week. A. on B. in C. / D. at ( )19. I would like to have fish for lunch______ it is very delicious. A. but B. if C. when D. because ( )20. There are _____rules for us at school. And we always have ____work to do. A. too many, too many B. too many , too much C. many too, much too D. too much , too much 二、完形填空。(每小题1分,共10分) Li Lei has a good friend. 21 name is Jim. He is 22 the USA. .He likes 23 food very much. He can 24 English and 25 Chinese. Li Lei and Jim are in the same 26 .They are classmates. They go to school five 27 a week.They stay 28 home on Saturdays and Sundays. At school they play 29 after class.They like swimming, 30 . ( )21.A. He B.His C. He’s D. Her ( )22.A. from B.to C.of D. after ( )23. A. China B. Chinas C. Chinese D.Japan ( )24. A.say B.tell C.talk D. speak ( )25. A. many B. any C. a little D. lot ( )26. A. class B. shop C. bank D. office ( )27. A. years B.days C.weeks D. months ( )28. A. at B.in C. on D.behind ( )29. A. a basketball B.the basketball C. basketball D.an basketball ( )30. A. also B. as well C. as D. too三、阅读理解(每小题1分,共15分) A John and Sally are in the same school. Their home is far (远)from school. They get up early in the morning and take the early bus after breakfast. Sometimes they have lunch in the restaurant. John likes hamburgers and meat. But Sally likes vegetables

实验思考题参考答案

实验思考题参考答案 实验Fe(OH)3胶体的制备、破坏、分离 1.常压过滤时滤纸为什么要撕去一角?答:使滤纸紧贴玻璃漏斗,有利于排出滤纸与玻璃漏斗之间气泡,形成液柱。 2.抽滤时剪好的滤纸润湿后略大于布氏漏斗的内径、或剪的不圆周边凸出部分贴在布氏漏斗内壁上,对抽滤有何影响?为什么?答:会造成漏虑。滤纸大于布氏漏斗内径会造成滤纸折叠,不能紧贴布氏漏斗。 3.抽滤时,转移溶液之前为什么要先稍微抽气,而不能在转移溶液以后才开始 抽气?答:使滤纸紧贴布氏漏斗,以免造成漏虑。 4. 沉淀物未能铺满布氏漏斗底部、滤饼出现裂缝、沉淀层疏松不实,对抽干效果有什么影响?为什么?如何使沉淀抽得更干爽?答:固液分离效果不好;漏气使压差变小;用药勺铺平、压实沉淀物再抽滤。 由胆矾精制五水硫酸铜 1.结晶与重结晶分离提纯物质的根据是什么?如果被提纯物质是NaCl 而不是CuSO4·5H2O,实验操作上有何区别? 答:根据物质溶解度随温度变化不同。NaCl 的溶解度随温度变化很小不能用重结晶的办法提纯,要用化学方法除杂提纯。 2.结晶与重结晶有何联系和区别?实验操作上有何不同?为什么? 答:均是利用溶解度随温度变化提纯物质;结晶浓缩度较高(过饱和溶液),重结晶浓缩度较低(饱和溶液),且可以进行多次重结晶。结晶一般浓缩到过饱和溶液,有晶膜或晶体析出,冷却结晶;重结晶是在近沸状态下形成饱和溶液,冷却结晶,不允许浓缩。

3.水浴浓缩速度较慢,开始时可以搅拌加速蒸发,但临近结晶时能否这样做? 答:搅拌为了加快水分蒸发;对于利用晶膜形成控制浓缩程度,在邻近结晶时不能搅拌。否则无法形成晶膜。 4.如果室温较低,你准备采用什么措施使热过滤能顺利进行?答:预热漏斗、 分批过滤、保温未过滤溶液。 5.浓缩和重结晶过程为何要加入少量H2SO4?答:防止防止Fe3+水解。 粗盐提纯 1.为什么说重结晶法不能提纯得到符合药用要求的氯化钠?为什么蒸发浓缩时 氯化钠溶液不能蒸干? 答:NaCl 的溶解度随温度变化很小不能用重结晶的办法提纯,药用氯化钠不仅要达到纯度要求,还要符合药用要求。不能浓缩至干NaCl 溶液,是为了除去KCl。 2.用化学法除去SO42-、Mg2+ 、Ca2+的先后顺序是否可以倒置过来?为什么? 答:不能,除杂要求为除去杂质引入的离子必须在后续的除杂过程中除去,先除去Mg2+ 、Ca2+后除SO42-,无法除去Ba2+。 3.用什么方法可以除去粗盐中不溶性杂质和可溶性杂质?依据是什么? 答:不溶性杂质用过滤方法;可溶性杂质用化学方法除杂。依据:溶度积。 醋酸解离度和电离常数测定 1.不同浓度的HAc 溶液的溶解度α是否相同?为什么?用测定数据说明弱电解质解离度随浓度变化的关系。 答:不同,因K a,θ AH 。c↑,α↓。 c 2.测定不同浓度的HAc 溶液的pH 值时,为什么按由稀到浓的顺序?答:平衡块,减小由于润洗不到位而带来的误差。

毛概第四章习题(含答案)

一、单项选择题(下列各题的四个备选答案中,只有一个正确答案。每小题1分,共20分) 1A 2C 3D 4B 5B 6C 7B 8D 9B 10B 11C 12C 13C 14C 15A 16A 17B 18B 19B 20B 1、马克思主义中国化就是运用马克思主义解决()。 A、中国革命、建设和改革的实际问题; B、中国的民族问题; C、中国关于“一国两制“问题 D、中国的“三农”问题 2、毛泽东明确号召“使马克思主义在中国具体化”是在()。 A.遵义会议上; B.瓦窑堡会议上; C.中共六届六中全会上; D.中共六届七中全会上 3、1978年,邓小平支持和领导的实践是检验真理的唯一标准的大讨论,是针对()。 A、“以阶段斗争为纲” B、苏联模式; C、农村家庭联产承包 D、“两个凡是” 4、新民主主义革命总路线的核心是() A、人民大众的参与 B、无产阶级的领导 C、反对帝国主义 D、反封建主义 5、中国共产党在民主革命中战胜敌人的三大法宝是() A、土地革命、党的建设、武装斗争 B、统一战线、武装斗争、党的建设 C、武装斗争、土地革命、统一战线 D、工农运动、武装斗争、党的建设 6、1974年2月,毛泽东在会见赞比亚总统卡翁达时提出的重要思想是()。 A、“中间地带”的思想 B、“三种力量”的思想 C、“三个世界”的思想 D、“两个霸权”的思想 7、邓小平理论的首要的基本理论问题是()。 A、什么是解放思想、怎样坚持解放思想 B、什么是社会主义、怎样建设社会主义 C、什么是改革开放,怎样实施改革开放 D、什么是实事求是,怎样坚持实事求是 8、邓小平认为,中国解决所有问题的关键是要靠()。 A、强大的人民政权 B、强大的人民军队 C、安定团结的政治局面 D、自己的发展 9、.我国实行对外开放格局所呈现的特点是()。 A、分步骤、多层次、逐步推进 B、全方位、多层次、宽领域 C、多层次、多渠道、全方位 D.、沿海、周边、内地 10、社会主义初级阶段的基本任务是()。 A、发展商品经济 B、解放和发展生产力 C、完善生产关系 D、完善上层建筑 11、国现阶段的所有制结构中,国有经济对经济发展起主导作用。这种主导作用主要体现在()。

中国传统文化习题

1【单选题】(1分) 亨廷顿认为:文化的重要作用是用价值观影响人类的进步。 A.正确 B.错误 正确 2【单选题】(1分) 《文化经济学》认为“文化是明天的生产力”。 A.正确 B.错误 正确 3【单选题】(1分) 文化精神是指:民族文化中占主导地位的基本思想与观念,或者说是文化传统的主流。 A.正确 B.错误 4【多选题】(1分) 文化精神与民族精神的关系:() A.文化精神是指一个民族文化中占主导地位的思想与观念。属于事实判断畴。 B.民族精神是指文化精神中的优秀成分。属于价值判断畴。 C.文化精神属于事实判断畴。 D.民族精神属于价值判断畴。 一、 1【多选题】(1分) “以人为本”的思想包括: A.以人为尊 B.以民为贵 C.以仁为本 正确 2【多选题】(1分) 礼教的核心是:() A.父子有亲 B.君臣有义 C.夫妇有别 D.长幼有序 E.朋友有信 3【多选题】(1分) 有关孟子倡导“五伦”的说法,哪些是正确的?() A“五伦”指父子有亲,君臣有义,夫妇有别,长幼有序,朋友有信。 B.五伦的观念是几千年来支配了我们中国人的道德生活的最有力量的传统观念之一。 C.“五伦”是我们礼教的核心,它是维系中华民族的群体的纲纪。 D.五伦里的权利和义务受到适当的遵循,社会就会稳定和有秩序。 正确

二、 1【单选题】(1分) 孔子思想体系的核心概念是:() A.仁 B.义 C.礼 D.知 2【单选题】(1分) 颜渊问仁,子曰:() A.仁者爱人 B.克己复礼为仁 C.仁者其言也讱 D.能行五者(恭宽信敏惠)于天下,可谓仁矣 3【单选题】(1分) 孔子关于仁的答案的共同之处,是强调() A.博学 B.审问 C.明辨 D.自我修养 ? 4【单选题】(1分) 孔子关于仁的回答,正确的答案应该在所有那些答案的()中寻找 A.共性 B.个性 正确 5【单选题】(1分) 传统中国人的基本思维方式是:() A.天人感应 B.形式逻辑 C.辩证逻辑 D.天人合一 正确 6【单选题】(1分) 天的涵义包括:() A.神性义 B.道德义 C.自然义 D.神性义道德义自然义 正确 7【单选题】(1分)

七年级下英语期末模拟试卷

七年级下英语期末模拟试卷 班级姓名_____________ 出卷人: 听力部分25分 一、听句子选择正确的答语。每个句子读一遍。(共5小题,计5分) 1. A. Sorry. B. You’re welcome. C. Never mind. 2. A. I’ll buy ten. B. Thirty dollars. C. I’ll buy them for my friends. 3. A. Not at all. B. Thank you. C. Yes, very good. 4. A. Yes, he did. B. Yes, he does C. Yes, he is. 5. A. Wednesday B. January 1st. C. Twelve thirty. 二、听对话,根据所听对话和问题,选择正确答案。读两遍。(共5小题,计5分) 6. A. Some food. B. Some books. C. Some food and some books. 7. A. Monday. B. Tuesday. C. Saturday. 8. A. Happy. B. Merry. C. Sad. 9. A. Pop. B. A little meat. C. Some water. 10. A. In the shop. B. In the hospital. C. In the zoo. 三、听长对话,根据对话内容选择正确答案,对话读两遍。(共5小题,计5分) 11. Where is the man? A. At a shop. B. At the train station. C. At a restaurant. 12. What would he like? A. A pair of pants. B. A winter jacket. C. A shirt. 13. What color does he like? A. Blue. B. Black C. Red. 14. What size does he want? A. Size S. B. Size M C. Size L. 15. How much is it? A. $ 360. B. $260 C. 260 yuan. 四、听短文,根据短文内容选择正确答案。短文读两遍。(共5小题,计10分) 16. Of all the seasons, Mike likes ________ best. A. winter B. summer C. spring 17. During the Spring Festival, the children will have _______. A. delicious food to eat B. flowers to plant C. letters to write 18. Mike thinks ________ is very interesting. A. making a snowman B. skiing C. playing games 19. Mike can ______ fastest in his class. A. run B. skate C. walk 20. Mike wants to win the _________ match. A. skate B. ski C. ice hockey 笔试部分95分

通信实验思考题

通信原理实验指导书思考题答案 实验一思考题P1-4: 1、位同步信号和帧同步信号在整个通信原理系统中起什么作用? 答:位同步和帧同步是数字通信技术中的核心问题,在整个通信系统中,发送端按照确定的时间顺序,逐个传输数码脉冲序列中的每个码元,在接收端必须有准确的抽样判决时刻(位同步信号)才能正确判决所发送的码元。位同步的目的是确定数字通信中的各个码元的抽样时刻,即把每个码元加以区分,使接收端得到一连串的码元序列,这一连串的码元序列代表一定的信息。通常由若干个码元代表一个字母(符号、数字),而由若干个字母组成一个字,若干个字组成一个句。帧同步的任务是把字、句和码组区分出来。尤其在时分多路传输系统中,信号是以帧的方式传送的。克服距离上的障碍,迅速而准确地传递信息,是通信的任务,因此,位同步信号和帧同步信号的稳定性直接影响到整个通信系统的工作性能。 2、自行设计一个码元可变的NRZ码产生电路并分析其工作过程。 答:设计流程图如下。 提示:若设计一个32位的NRZ码,即要求对位同步信号进行32分频,产生一路NRZ码的帧同步信号,码型调节模块对32位码进行设置,可得到可变的任何32位码型,通过帧同步倍锁存设置的NRZ码,通过NRZ码产生器模块把32位并行数据进行并串转换,用位同步信号进行一位一位输出,循环输出32位可变NRZ码即我们的设计完毕。 实验二思考题P2-4: 1、实验时,串/并转换所需的帧同步信号高电平持续时间必须小于一位码元的宽度,为什么? 答:如果学生认真思考,可以提出没有必要一定小于一位码元的宽度。如24位的数据在串行移位时,当同步信号计数到第24位时,输出帧信号,通过帧信号的上升沿马上锁存这一帧24位数据,高电平没有必要作要求。主要检查学生是否认真考虑问题。 2、是否还有更好的方法实现串/并转换?请设计电路,并画出电路原理图及各点理论上的波形图。 答:终端模块采用移位锁存的方法实现串/并转换,此方法目前是最好的方法了。 实验四思考题P4-6: 1、在分析电路的基础上回答,为什么本实验HDB3编、解码电路只能在输入信号是码长为24位的周期性NRZ码时才能 正常工作? 答:因为该电路采用帧同步控制信号,而1帧包含24位,所以当NRZ码输入电路到第24位时,帧同步信号给一个脉冲,使得电路复位。HDB3码再重新对NRZ码进行编译。且HDB3码电路对NRZ进行编译的第一位始终是固定的值。 因此HDB3编译码电路只能在输入信号是码长为24位的周期性NRZ码才能正常工作。但是由于HDB3码很有特点,现在为了使学生更好的观察HDB3如何进行编译码,我们对电路进行了改正,去掉了帧同步控制信号,所以现在对任意位的NRZ码都可以进行编码。 2、自行设计一个HDB3码编码电路,画出电路原理图并分析其工作过程。 答:根据HDB3的编码规则,CPLD电路实现四连“0”的检测电路,并根据检测出来的结果确定破坏点“V”脉冲的加入,再根据取代节选择将“B”脉冲填补进去。原理框图如下: 3

第四章课后思考题及参考答案

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