mong các anh giúp iêm ạ vì mai e thi rùi
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Cho cả năm luôn này cj:) Ngữ pháp tiếng Anh lớp 8 cả năm - Hiến thức tiếng Anh lớp 8 học kì 1 + học kì 2 - VnDoc.com
Tham khảo:
Có vì tình bạn trong sáng lành mạnh có những đặc điểm cơ bản sau: phù hợp với nhau về quan điểm sống,bình đẳng và tôn trọng lẫn nhau, chân thành tin cậy và có trách nhiệm đối với nhau, thông cảm đồng cảm sâu sắc với nhau
\(a,m=0\Leftrightarrow y=3x+2\)
Vì \(3>0\) nên hàm đồng biến
\(b,\text{Thay }x=-1;y=3\\ \Leftrightarrow-m-3+2=3\Leftrightarrow m=-4\\ c,\text{PT giao Ox: }y=0\Leftrightarrow x=-\dfrac{2}{m+3}\Leftrightarrow A\left(-\dfrac{2}{m+3};0\right)\Leftrightarrow OA=\dfrac{2}{\left|m+3\right|}\\ \text{PT giao Oy: }x=0\Leftrightarrow y=2\Leftrightarrow B\left(0;2\right)\Leftrightarrow OB=2\\ \text{Ta có }S_{OAB}=4\\ \Leftrightarrow\dfrac{1}{2}OA\cdot OB=4\Leftrightarrow\dfrac{2}{\left|m+3\right|}\cdot2=8\\ \Leftrightarrow\dfrac{4}{\left|m+3\right|}=8\\ \Leftrightarrow\left|m+3\right|=\dfrac{1}{2}\Leftrightarrow\left[{}\begin{matrix}m=-\dfrac{5}{2}\\m=-\dfrac{7}{2}\end{matrix}\right.\)
2x² + 5x - 12 = 0
∆ = 25 + 4.2.12 = 121
x₁ = (-5 + 11)/4 = 3/2
x₂ = (-5 - 11)/4 = -4
Bảng xét dấu
x -∞ -4 3/2 +∞
2x²+5x-12 + - +
Các nghiệm nguyên của bpt là: -4; -3; -2; -1; 0; 1
Vậy bpt đã cho có 6 nghiệm nguyên
I/ UNSCRAMBLE THE WORDS
1. AREHACE:................. 3. CTOTHEAOH:.......................... 5. CHSMATOHEAC:......................... 7. HDHEAEAC:...................... 9. HSFINIG:....................... 11. CDAINNG:.................... 13. PHOSING:.......................... 15. TENCACID:....................... 17. KAREB:........................ 19. LEIGD:.......................... 21. BAREFOOT:.................. 23. CWOSDHE:....................... 25. VLEAGIL:...................... 27. LECFTAOROMB:.................. 29. FCIALYIT:..................... 31. FGREID:.......................... 33. NTWERI:.......................... 35. NAUMUT:...................... 37. NESHINSU:......................... 39. FGYOG:......................... 41. FREOCSAT:........................... 43. TOMORKEBI:......................... 45. ISOYN:.................... 47. CBEAL:................. 49. CDEOTRYUNSI:................... | 2. ACHBKAEC:.................... 4. SEOR RTHAOT:...................... 6. CDOL:................ 8. HIGEITSENG:..................... 10. KANGATI:................... 12. WSIMNGMI:................... 14. PALACE:................... 16. TRASCHC:..................... 18. TREGLIH:.......................... 20. RUNB:................... 22. WCOR:.................... 24. TDLEAENT:...................... 26. NODEMR:................. 28. MNNTAOUI:........................ 30. IEVW:............... 32.SRETEO:................... 34. SNGIPR:................. 36. RESMUM:............... 38. WYDIN:..................... 40. YSTMOR:.......................... 42. HCACO:....................... 44. HEWTOOMN:...................... 46. PLANE:..................... 48. CTEOTAG:................... 50. CGAINMP:.................... |
II/ DRAW A LINE TO MATCH EACH QUESTION WITH THE ANSWER
1. What will the weather be tomorrow? 2. How far is it from here to Hanoi? 3. What does this sign mean? 4. What's your hometown ? 5. How did the accident happen? 6. How can I get to the zoo? 7. Where's the post office? 8. What's winter in your country? 9. How long does it take to get there by train? 10. What's the matter with you? 11. What's your village ? 12. What happened at the end of the story? 13. What shouldn't he do? 14.What did you do on your holiday? 15. What character in the story do you ? 16. What will you have in your dream house? 17. What did you do in Nha Trang? 18. Why shouldn't they jump into the river? 19. What happen first? 20. What will your dream house be ? 21. How did you get to your hometown? 22. What do you do in your free time? 23.Where will your dream house be? 24. Which city is bigger, Tokyo or London? 25. Don't ride too fast. | a. It's a small village in the countryside . b. It's often cold. c. You can go by bus. d. Go straight ahead . It's opposite the cinema. e. By coach. f. It means we mustn't cross the road. g. It'll be a large house. It's got a yard. h. I went to Tri Nguyen Aquarium. i. You may fall off your bike. k. He shouldn't play with a lighter. l. The fox asked "Will you give me some meat?" m. A motorbike rider hit him. n. Because they may drown. o. It will be in the mountains. p. Tokyo is. q. The fox used tricks to get the meat from the crow. s. It's about 40 kilometers. t. I've got a toothache. r. Robots. They'll do the housework. x I listen to music. u. It will be hot and sunny. v. Ten hours. w. It's beautiful. It's hasn't got a lot of cars. y. I the fox because it is clever. z. I went to Malaysia. |
III/ DRAW A LINE TO MACTH THE WORDS THAT GO TOGETHER
1. dry 2. go by 3. go 4. take 5. road 6. home 7. in front 8. turn 9. get 10. once upon 11. gas 12. cell 13. break 14. fall off 15. go 16. spill 17. do 18. go to see 19. a comfortable 20. a large 21. a cable 22. a hi-fi 23. take 24. get 25. piece | a. train b. sightseeing. c. country d. signs e. a bus f. of f. season g. phone h. station i. of meat j. right k. a time l. housework m. a rest n. a bad cut. o. the doctor. p. your bike. q. hot water r. garden s. stereo t. house u. TV v. a leg w. for a walk. y. off the bus |
VI/ PUT THE QUESTIONS FOR THESE ANSWERS
1. .........................................................................................to the zoo ?
- You can get there by bus.
2. .........................................................................................Phu Quoc Island?
- You can get there by ship.
3. .........................................................................................the post office?
- Go along that street. It's by the lake.
4. .........................................................................................the nearest bookshop?
- Go straight ahead. It's on the right.
5. How .....................................................................................?
- A motorbike rider hit him.
6. .........................................................................................live?
- I live in a village.
7. What's .........................................................................................?
- I'ts beautiful. It's got a lot of parks.
8. ................................... New York ?
-It's modern. It's got a lot of buildings.
9. ..................................................................?
- There will be a robot. I'll use it to do the housework.
10. ...............................................................................?
- I have got a stomachache.
11. ..................................................................free time?
- I go camping and surf the Net.
12. . ..................................................................by plane?
- 2 hours.
13. .................................................................. tomorrow?
- It'll very cold and snowy.
14. . ..................................................................?
- There will be a fridge. I'll use it to keep food fresh.
15. . ..................................................................?
- You should use some eye drops
16. . ..................................................................?
- You may get a burn
17. ..................................................................?
- I Snow White. She's very beautiful.
18. . ..................................................................?
- It'll be a large house. It's got a yard.
19. ..................................................................the cat?
- Because it may scratch his face.
20. . ..................................................................your country?
It's often hot. There is much rain.
V. ANSWER THESE QUESTIONS
1. Where is your hometown? .......................................................................................
2. How often do you get there? ....................................................................................
3. How do you get there? ............................................................................................
4. How long does it take you to get there? ..................................................................
5. What is your hometown ?...................................................................................
6. Where did you go for Tet?.........................................................................................
7. Did you get to your hometown?...............................................................................
8. What are the seasons in the North of Vietnam? .......................................................
9. What are the seasons in the central and the south of Vietnam?..................................
10. What is summer in your country? ..................................................................
11. What is spring in your country?..................................................................
12. What is Autumn in your country?..................................................................
13. What is winter in your country?..................................................................
14. What do you do in your time?..............................................................................
15. What's your dream house be ?..........................................................................
xong , bn làm đi nhé!
I. Phonics:
Odd one out:
1. A. story | B. worry | C. fly | D. study |
2. A. ride | B. | C. nice | D. fish |
3. A. fever | B. very | C. bed | D. well |
4. A. school | B. chocolate | C. child | D. children |
5. A. many | B. animal | C. engineer | D. friend |
Odd one out:
6. A. singer | B. worker | C. farmer | D. engineer |
7. A. cartoon | B. programme | C. music | D. classroom |
8. A. garden | B. question | C. delicious | D. water |
9. A. intelligent | B. greedy | C. princess | D. favourite |
10. A. character | B. apple | C. because | D. stupid |
II. Vocabulary:
Odd one out:
11. A. engineer | B. teacher | C. farm | D. doctor |
12. A. stomachache | B. headache | C. fever | D. school |
13. A. bike | B. motorbike | C. plane | D. comic |
14. A. write | B. read | C. song | D. sleep |
15. A. apple | B. fox | C. elephant | D. lion |
Choose the correct answer:
16. What would you to be in the future? – I’d to be _____ writer.
A. a
B. an
C. Ø
D. the
17. I think Tam is _______.
A. greedy
B. kind
C. ugly
D. stupid
18. My favourite book is _______.
A. comics
B. songs
C. TV
D. children
19. The main character in Snow White is _______.
A. the princess
B. Snow White
C. Doraemon
D. Tom
20. Trung would to be a _______ in the future.
A. pilot
B. engineer
C. artist
D. architect
21. What are you doing? – I am _______ my favourite books.
A. read
B. reading
C. listen
D. listening
22. Nam has a high temperature. He has a/an _______.
A. earache
B. stomachache
C. fever
D. toothache
23. Why do you would to be a teacher? - _______ I’d to teach children.
A. When
B. Because
C. What
D. Where
24. Why would you to be a nurse? - _______.
A. Because I would to look after the patients.
B. Because I would to teach the children.
C. Because I would to write stories for children.
D. Because I would to fly a plane.
25. Linda has a pain in her throat. She has a/an _______.
A. toothache
B. sore throat
C. earache
D. backache
26. Don’t ride your _____ so fast!
A. car
B. matches
C. bike
D. stairs
27. You shouldn’t play with the knife because it’s _______.
A. small
B. sharp
C. tall
D. deep
28. What is she doing? – She _______ with matches.
A. are playing
B. was playing
C. is playing
D. am playing
29. What’s the ______ with you, Tony? – I’ve got a fever.
A. problem
B. matter
C. happiness
D. luck
30. What do you do in your free time? – I surf _______.
A. the Internet
B. comics
C. homework
D. flowers
31. John is riding his bike _______ the park.
A. on
B. at
C. above
D. in
32. I love karate. I _______ karate every day.
A. work
B. make
C. do
D. clean
33. Hoa often _______ to the music club every Sunday.
A. goes
B. does
C. listens
D. climbs
34. They _______ and singing songs.
A. dancing
B. climbing
C. going
D. doing
35. A: Thanks for your lovely gift.
B: ________.
A. You’re welcome
B. Go ahead!
C. I’m sorry!
D. Don’t worry about it!
36. Quan has a pain in his stomach. He has a/an _______.
A. toothache
B. stomach ache
C. sore throat
D. headache
III. READING
Task 1. Look and write the correct words.
Toothache/ bus stop/ pilot/ rice/ The story of Tam and Cam/
37. It’s a fairy tale about two sisters. ______________
38. He has a pain in her tooth. ________________
39. A person who flies or is qualified to fly an aircraft or spacecraft. ____________
40. A Southeast Asian grass widely grown in warm wet areas especially for its seeds which are used for food. _________________
41. A place where a bus regularly stops, usually marked by a sign. _________________
Task 3: Read and answer the questions.
Hi, I’m Mai. My hobby is reading folk tales. Folk tales are usually short and interesting. They often give me one surprise after another. The character are sometimes honest, sometimes greedy, sometimes wise, and sometimes stupid. I The Fox and the Crow very much. The Fox was clever and the Crow was not. The Crow lost its delicious meat and the Fox got it. I love folk tales very much because each of them gives me a lesson in life.
49. What kinds of stories does Mai reading?
____________________________________________________.
50. What does she think of folk tales?
____________________________________________________.
51. What does she think of the characters in folk tales?
____________________________________________________.
52. What does she think of the characters in The Fox and the Crow?
_________________________________________________
35 đề thi học kì 2 môn tiếng Anh lớp 5 năm 2021 có đáp án - 35 Đề thi tiếng Anh lớp 5 học kì 2 năm 2020 - 2021 - VnDoc.com
tham khảo
- Công nghiệp châu Phi còn chậm phát triển là do:
+ Trình độ dân trí thấp,
+ Thiếu lao động có trình độ,
+ Quản lý yếu kém.
+ Cơ sở vật chất lạc hậu,
+ Thiếu vốn, phụ thuộc vào nước ngoài…
- Một số nước tương đối phát triển ở châu Phi là: cộng hòa Nam Phi, Li –Bi, An –giê-ri và Ai Cập.
Tham khảo:Tuy châu Phi có nguồn khoáng sản phong phú nhưng máy móc thô sơ, số lượng hàng hóa vẫn còn rất hạn chế. Những mặt hàng xuất khẩu có giá trị không cao.
a) Zn + H2SO4 $\to$ ZnSO4 + H2
b) n H2 = n Zn = 0,85/65 = 17/1300 mol
=> V H2 = 17/1300 .22,4 = 0,292(lít)
PTHH: \(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\uparrow\)
Ta có: \(n_{Zn}=\dfrac{0,65}{65}=0,01\left(mol\right)=n_{H_2}\) \(\Rightarrow V_{H_2}=0,01\cdot22,4=0,224\left(l\right)\)
*P/s: Sửa 0,85 \(\rightarrow\) 0,65