延邊寒假作業(yè)答案參考

時間：2020-11-14 17:44:11 寒假作業(yè) 我要投稿

延邊寒假作業(yè)答案參考

　　篇一：延邊寒假作業(yè)答案

　　第1頁—第3頁

　　1．選擇題

　　1A 2D 3A 4C

　　2．填空

　�。�1）T=20-6h 20,6 T h h

　　(2)Q=6x105-pt 6x105 p Q t 0≤t≤6x105/p

　　(3)S=1.5b (4) 0≤x≤7 0≤y≤5 5 0

　　3.解答題

　　(1)y= Q/a-x –Q/a (0≤x≤a)

　　(2)y=80-2x

　　20<x<40

　　(3) ①-2≤x≤3

　　②當x=3,y有最小值為1/2

　�、郛�-2≤x≤0，y隨x的增大而增大，當0≤x≤3，小

　　（4）①`v=800-50t

　�、�0≤t≤16

　�、郛攖=8時， v=800-50x8=400

　�、墚攙=100時，100=800-50t

　　T=14

　　第5頁—第7頁

　　選擇題 y隨x的增大而減

　　1B 2C 3C 4B 5B 6A 7B 8D

　　填空

　　(1)1 (2)y=2x+1 -1 (3)m<2 n<3 (4)y=-3x+3

　　(5)y=x+3 (6)y=64x+48 (7)S=2n+1 (8)y=1/5 x-6 30

　　解答題

　�。�1）設y=kx+b

　　-4k+b=15

　　6k+b= -5

　　k= -2 b=7

　　y= -2x+7

　　(2)略

　　（3）①表示y與x的關系，x為自變量

　�、�10時離家10km 13時離家30km

　　③12時-13時，離家30km

　�、�13km

　　⑤2時-13時

　�、�15km/h

　　第9頁—第11頁

　　1. 選擇題

　�。�1）A （2）C （3）C

　　2．填空

　�。�1）y=-2x (2)m<2 y="5x+3" y2="">y1 (5)y=-2x+100 25<x<50

　　(6)9

　　3.解答題

　　(1) ① Q=200+20t② (0≤t≤30)

　　(2) ①y=80 (0≤x≤50)

　　y=1.9x-15 (50≤x≤100)

　�、趛=1.6x

　　③選擇方式一

　�。�3）①在同一直線上 y=25/72x

　　②當x=72時，y=25

　　當x=144時，y=50

　　當x=216時，y=75

　　y=25/72 x (0≤x≤345.6)

　�、郛攛=158.4時，y=25/72x158.4=55

　　(4) ①y甲=2x+180

　　y乙=2．5x+140

　�、诋攛=100時，y甲=200+180=380

　　Y乙=140+250=390

　　380〈390

　　租甲車更活算

　　第13頁—第15頁

　　1.選擇題

　　（1）D （2）C （3）C

　　2．填空

　　(1)x=2

　　y=3

　　(2)x=2 x>2

　　(3)-3 -2 x= -5/8 y= -1/8

　　(4)1/2 0 x=2

　　y=3

　　(5)y=5/4 x

　　2. 解答題

　　3. （1）略

　�。�2）①依題意

　　-k+b= -5

　　2k+b=1

　　解得

　　k=2 b= -3

　　y=2x+3

　　當y≥0 時

　　2x-3≥0, x≥3/2

　�、诋攛<2時，2x<4

　　則2x-3<1

　　即y<1

　　(3) ①y會員卡=0.35+15

　　y租書卡=0.5x

　�、谌魕會員卡〈y租書卡

　　則0.35x+15<0.5x

　　x>100

　　租書超過100天，會員卡比租書卡更合算

　�。�4）設A（m,n）

　　1/2x4xm=6

　　m=3

　　n=2

　　A ( -3, -2)

　　y=2/3x , y= -2/3x -4

　　(5) ① y甲=0.8x1.5X+900=1.2x+900 (x≥500)

　　篇二：延邊教育出版社寒假作業(yè)答案

　　一．聽力測試。（30分）

　�、�. 情景反應。（5分）

　　聽兩遍。根據(jù)你所聽到的`句子，從A、B、C三個選項中選出最恰當?shù)拇鹫Z。

　　1. A. Oh, that’s all right. B. I’m very happy. C. Oh, that’s right.

　　2. A. Yes, I will. B. No, I won’t. C. No, I’m not.

　　3. A. Yes, please! B. Either will do. C. That’s fine.

　　4. A. He is over sixty. B. He’s a doctor. C. He’s much better.

　　5. A. There was. B. Yes, there was. C. No, there was.

　　II. 對話理解。（5分）

　　聽兩遍。根據(jù)你所聽到的對話和問題，從A、B、C三個選項中選出正確答案。

　　6. A. A week. B. Three days. C. Five days.

　　7. A. Go skateboarding only. B. Go skateboarding or play football C. Read books.

　　8. A. He is going to the park. B. He is going fishing with his father.

　　C. He is going to the beach with his family.

　　9. A. He forget to do his homework at home.

　　B. He didn’t remember to bring his homework with him.

　　C. He left home with his homework.

　　10. A. At the second turning. B. Between a bookshop and a clothing shop.

　　C. Between a bookshop and a hospital.

　�、�. 短文理解。（20分）

　　聽三遍。根據(jù)你所聽到的短文內(nèi)容，從A、B、C三個選項中選出正確答案。

　　(A)

　　11. How many meals do many English people have a day?

　　A. Two. B. Three. C. Four.

　　12. What may people have for their breakfast?

　　A. Tea or eggs. B. Porridge, eggs or bread, tea or coffee.

　　C. Tea and coffee.

　　13. When do English people have lunch?

　　A. Any time. B. One. C. Five.

　　14. What don’t people eat for their dinner?

　　A. Porridge. B. Bananas and apples. C. Meat and fish.

　　15. When do some of the English people have dinner?

　　A. At one clock. B. In the middle of the day. C. In the evening.

　　(B)

　　16. One evening the girl in the park.

　　A. was waiting for her boy friend B. was looking for someone she didn’t know

　　C. was doing exercise

　　17. It was very_______ that day.

　　A. very warm B. cold C. dark

　　18. The man was________.

　　A. looking for his bag B. waiting for the girl C. putting away something

　　19. The girl went to________.

　　A. the man when he was walking here and there B. the place when the man left.

　　C. the police station when she saw the man

　　20. The man was caught_______.

　　A. by the girl and her boy friend B. when he was going to leave

　　C. a few days later

　　二、語言基礎測試。（40分）

　　I.單詞測查。(10分)

　　A. 根據(jù)句意和首寫字母補全單詞。（5分

　　1. You must be careful to c___ the street.

　　2. The t ___ is very busy at this time today.

　　3. Lucy can do her homework a____________, she doesn`t want any help.

　　4. It’s i_____________ to speak loudly in public.

　　5. All the students passed the exam e____________ Wang Ling.

　　B. 用所給單詞的正確形式, 非一空一詞。（5分）

　　1. ___________(luck) I passed the exam this time.

　　2. Thank you very much for ____________(invite) me to your party.

　　3. When I saw him last night, he ____________ (write) an e-mail.

　　4. If it ___ (not snow) tomorrow, we’ll go skating.

　　5. They enjoyed ____________(them) at the party.

　　II. 單項選擇。（20分）

　　從A、B、C、D四個選項中選出可以填入空白處的最佳答案。

　　1. Can you tell me ?

　　A. what present does he like B. what present he likes

　　C. what present is he like D. what present he is like

　　2. —I don't much like playing tennis. —I don't _______ . I enjoy _______ basketball.

　　A. either …to play B. too…playing

　　C. either …playing D. neither, to play

　　3. —Could you ________ the baby laugh? — Certainly. It’s easy.

　　A. keep B. ask C. teach D. make

　　4. The old woman had ________ teeth in her mouth, so she was very,very difficult to eat meals.

　　A. a little B. a few C. little D. few

　　5. —Must I finish my homework tonight? —No, you ________.

　　A. mustn’t B. needn’t to C. don’t have to D. don’t need

　　6. These men are _________ strong . They can eat _________ food every meal.

　　A. too many, too much B. much too, too much

　　C. too much, too many D. much too, many too

　　7. Her answers _________ everyone here.

　　A. surprised B. surprising C. were surprised D. were surprising

　　8. —Is Mr Wang in the office now?

　　—No, I’m sure he __________ be there. I saw him driving a car in the street just now

　　A. mustn’t B. can’t C. may not D. needn’t

　　9. Peter isn’t the tallest student in the class, but he is taller than __________ boys.

　　A. all of the B. any other C. all the other D. some of the

　　10. I’ m going to __________ hospital to see my uncle. He is ill in __________ hospital.

　　A. /,the B. a, the C. the, a D. the,/

　　11. —Tom plays football well. —___________________.

　　A. So he does B. So does he C. So he is D. So is he

　　12. — Robert’ s never late, ____________?

　　—_______________. He always comes on time.

　　A. is he; No, he isn’t B. isn’t he; No, he isn’t

　　C. is he; Yes, he is D. hasn’t he; Yes, he is

　　13. There ____________ a lot of traffic in the future.

　　A. will have B. will be C. are going to be D. is going to have

　　14. Little Tom becomes very ________ in history and he find it very _________.

　　A.interested, interested B.interested, interesting

　　C.interesting, interesting D.interesting, interested

　　15. Did it take you two hours your homework yesterday?

　　A. did B. doing C. to do D. does

　　16. —Whose trousers are these? —______________, I think.

　　A. They B. Their C. Theirs D. Them

　　17. They ________ the maths problem when I came in.

　　A.worked on B.were working o n C.were working D .were working for

　　18.—Would you mind my taking this seat? —__________________.

　　A. Yes, sit down, please B. Yes, take it, please

　　C. No, of course not D. No, you can’t take it

　　19. They arrived ___________ London___________ a cold winter morning.

　　A. at, in B. in, on C. at, on D. in, at

　　20. —Do you know if he ____________to play basketball with us?

　　—I think he will come if he ___________free tomorrow.

　　A. will come; will be B. comes; is C. comes; will be D. will come; is

　�、�.句型轉換。(10分)

　　根據(jù)所給提示，完成句子。每空一詞，含縮略詞。

　　1. This violin cost me much money. (改為一般疑問句)

　　__________ this violin ___________ you much money？

　　2. She had to do it again. （改為反意疑問問句）

　　She had to do it again, ____________ ____________?

　　3. They have lived in this town since they moved to Nanjing. （對劃部分提問）.

　　__ __ ___ __ ___ ___ have they lived in this town?

　　4. Cities will be very big and crowded. (改為否定句)

　　Cities ___________ _____________ very big and crowded.

　　5. It seems that Kate has supper at home.（改為同義句）

　　Kate __________ ____________ have supper at home.

　　三、綜合運用測試。（80分）

　　I. 完成對話。（5分）

　　從方框內(nèi)選擇恰當?shù)木渥油瓿蓪υ挕?/p>

　　A. Well, she always enjoys sports games, doesn’t she?

　　B. I didn’t know Eva was interested in photography.

　　C. There are a lot of photographers there.

　　D. You mean she’s coming to the game, too.

　　E. I just have to close up the shop.

　　F. It’s time to go.

　　G. Eva’s closing the door.

　　Charley: Come on, Steve. 1

　　Steve: Wait a moment. 2

　　Charley: OK.

　　Steve: By the way, can we give my sister a ride home tonight?

　　Charley: Sure. 3

　　Steve: Yes. She wants to take some pictures.

　　Charley: 4

　　Steve: Yeah. She wants to work for a newspaper someday.

　　Charley: But I think it might be hard for her to succeed. 5

　　II.完形。（20分）

　　從A、B、C、D四個選項中選出一個能填入相應空格內(nèi)的最佳答案。

　　Have you 1 drunk the water directly (直接) from a river? I’m sure your answer is “ 2 ”. Perhaps you may have tried the water from a well (井), or from a tap (龍頭) a long time ago. 3 as I know, most of you only drink water from a water boiler (水壺) or the bottled water bought from a show nowadays (現(xiàn)在).

　　But things were quite 4 twenty years ago. At that time, all the small rivers 5 us were very clear and the water was very clean. If you were 6 , you could just bend (彎腰) down by the riverside and drink some water 7 your hands. It was cool and sweet. How pleasant(令人愉快) it was!

　　But all this was in the past. Things 8 a lot. Some river water is not even 9 for us to wash our hands. 10 pity(遺憾)!

　　1. A. already B. just C. ever D. even

　　2. A. Yes B. No C. Right D. Wrong

　　3. A. However B. Though C. Since D. Yet

　　4. A. same B. easy C. different D. difficult

　　5. A. between B. around C. among D. by

　　6. A. thirsty B. hungry C. tired D. sleepy

　　7. A. in B. with C. on D. by

　　8. A. have changed B. have turned C. have got D. have exchanged

　　9. A. enough dirty B. dirty enough C. enough clean D. clean enough

　　10.A. How B. What a C. What D. How a

　　III. 理解。（30分）

　　下列材料，從A、B、C、D四個選項中選出最佳答案。

　　(A)

　　Mr Jenkins is in a clothing shop. He is going to buy a coat. The shop-assistant isn’t there, so he is standing near the counter(柜臺) and waiting for her. A young woman is standing near the counter, too. She looks at Mr Jenkins and says to him, “Excuse me.” “Yes?” Mr Jenkins asks. “ Are you going to do something for me? I want a coat.” says the woman. Mr Jenkins says, “I

　　can’t help you.” Then the woman says, “You must help me. That’s your work.” Mr Jenkins says kindly, “It’s not my work. I want a coat, too. I’m a customer. I’m not a shop-assistant.”

　　1. The young woman is looking at________.

　　A. a coat B. the counter C. the shop-assistant D. Mr Jenkins

　　2.The young woman thinks Mr Jenkins is going to_______.

　　A. leave the shop B. take a coat

　　C. work for her D. speak to her

　　3. From the passage we know the shop-assistant is a_________.

　　A. boy B. man C. young man D. woman

　　4. Why does the young man want Mr Jenkinsto help her?

　　A. Because she thinks he is the shop-assistant.

　　B. Because Mr Jenkins is a man.

　　C. Because she is standing near the counter.[

　　D. Because she wants to buy a coat.

　　5. The “customer”in Chinese is________.

　　A. 店主 B. 營業(yè)員 C. 顧客 D. 服務員

　　(B)

　　Some animals sleep in winter because the weather can be very cold and it is difficult for them to find food. They can sleep for a long time. This kind of winter sleep is called “hibernation”. If an animal moves about a lot, it needs food. Hibernating animals do not need to eat much because they are not moving about. Their hearts beat(心跳) very slowly and they also

　　breathe(呼吸) slowly. They find a place out of danger. Their body fat keeps them alive and warm. Some animals, such as bears, may wake up from their hibernation on warm winter days and then quickly go b ack to sleep again when they see the snow is still thick on the ground. When the weather becomes warmer in spring, the animals start to wake up and look for food.

　　1. Some animals hibernate in winter because _____.

　　A. they feel cold

　　B. it isn’t easy for them to find something to eat

　　C. they are weak

　　D. both A and B

　　2. If an animal moves about a lot, it needs _____.

　　A. the sunshine B. winter sleep

　　C. food D. water

　　3. Hibernating animals don’t have to eat much because _____ keeps them alive and warm.

　　A. the sunshine B. their body fat

　　C. bad weather D. their hearts

　　4. Some animals may _____ when they find the snow is still thick on the ground.