hãy viết một bài thơ về thiên nhiên

2/ Cho mạch điên như hìh. R1=R3=3ôm, R2=2ôm, R4=1ôm, R5=4ôm, CĐDĐ qua mạch chíh I=3A. Tìm a/ UAB b/ HĐT trên 2 đầu mỗi điện trở c/ UAD, UED

Một động tử xuất phát từ A chuyển động trên đường thẳng hướng về điểm B với vận tốc ban đầu v1=32m/s. Biết rằng cứ sau mỗi giây vận tốc của động tử lại giảm đi một nửa và trong mỗi giây đó động tử chuyển động đều. a) Sau bao lâu động tử đến được điểm B, biết rằng khoảng cách AB = 60m. b) Ba giây sau kể từ lúc động tử xuất phát có một động tử thứ hai cũng xuất phát từ A chuyển động về phía B với vận tốc v2 = 31m/s. Hai động tử có gặp nhau không? Nếu có hãy xác định thời điểm gặp nhau kể từ khi động tử thứ nhất xuất phát và vị trí gặp nhau cách B bao nhiêu m?

Một vận động viên điền kinh chạy cự li dài đuổi theo một con rùa cách anh ấy: L = 10km. Vận động viên chạy hết quãng đường đó trong thời gian t1 nhưng con rùa lại bò được một khoảng bằng x1, khi vận động viên vượt qua quãng đường x1 thì con rùa bò được quãng đường x2 và cứ tiếp tục như vậy. Trọng tài cuộc đua chỉ kịp đo được đoạn đường x2= 4m khoảng thời gian t3= 0,8 giây. Cho rằng vận động viên và con rùa chuyển động trên cùng một đường thẳng và tốc độ của cả hai là không đổi. a) Tính tốc độ của vận động viên và con rùa. b) Khi vận động viên đuổi kịp con rùa thì con rùa đã đi được quãng đường bao nhiêu?

Làm lại hộ mình với ai làm nhanh nhất mình vote 5*

Làm hộ mk vs ạ k hiẻu dạng này lắm 40. That teacher is a (n) __________ one. His pupils like his sense of humor. A. amusing B. amused C. amusement D. self- amused 41. The class is ________ control because of the game. A. off B. away from C. out of D. below 42. Let’s go to the cinema, ____. A. will we B. shall we C. let we D. don't we 43. Give her a telephone to ring ______she gets lost. A. whether B. unless C. until D. in case 44. The party, at _____I was the guest honor, was extremely enjoyable. A. where B. that C. who D. which 45. The children _________to the zoo. A. were enjoyed take B. enjoyed being taken C. were enjoyed taking D. enjoyed taking 46. Go and get me some coffee, _________ ? A. shall we B. shan’t we C. will you D. won’t you 47. He was unwilling to explain the reason_________ his absence. A. why B. for C. of D. that 48. She used to a living by delivering vegetables to local hotel. A. earn B. gain C. get D. win 49. I’d have told you if I _________ the book. A. had seen B. should have seen C. saw D. would have seen 50. He was so tired that he wasn’t capable_________ driving himself home. A. to B. for C. of D. from IV: Each line has a mistake, find and correct it 1.Thank you for inviting me to the party. I wish I can but I can’t. 2. He is used to drink coffee for breakfast but now he drinks milk. 3. The kitchen is not very big but there’s a lot of cupboards. 4. Lukas can play the piano when he was two and now he practices it. 5. We were very poor when we were first in America, we can’t buy anything. 6. They are going on a sightsee tour of New York. 7. We have lived in Vietnam for a long time, so we used to the hot. 8. Liverpool is an industry city in the North of England. 9. Primary school children can learn three language at school in Malaysia. 10. The West and the East Malaysia are separate by about 640 km of the sea. V. Read the following passage and choose the best answers.

Hấp thụ hết 3,36 lít khí S O 2 (đktc) vào dung dịch NaOH thu được dung dịch chứa 2 muối. Thêm B r 2 dư vào dung dịch X, phản ứng xong thu được dung dịch Y. Cho dung dịch Y tác dụng với lượng dư dung dịch Ba ( O H ) 2 . Khối lượng kết tủa thu được sau khi phản ứng xảy ra hoàn toàn là

Làm lại hộ mình ạ Mình mong mn làm hộ

giúp mik với nkaaaa yêu mấy bạn nhiều

III. Choose the word or the phrase or sentence that best completes each unfinished sentence below or that best keeps the meaning of the original sentence if it is substituted for the underlined word or phrase. 1. I ________ it 5 years ago A. have been B. saw C. was seeing D. am seeing 2. We ________ in Lenin Park when it rained. A. walked B. have walked C. were walking D. walk 3. I often play soccer ________ Sunday afternoon. A. in B. at C. on D. after 4. My father was good at swimming. He is used to________swimming in summer. A. go B. goes C. went D. going 5. Kate hates ________ to classical music. A. listen B. listened C. listens D. listening 6. I’ve lived in this house ________1990 A. from B. since C. for D. in 7. Mr. Smith ________his car for 15 years, but it still looks very new. A. has B. had C. have had D. has had 8. We must be there ________ 7.30 and 8.25. A. at B. before C. between D. after 9. I wish you________me with my work. A. help B. will help C. helped D. would help 10. My father started ________in a small village 10 years ago. A. teachingB. Teach C. taught D. teaches 11. Leave it _________it is . A. that B. as C. like D. so. 12. She can’t afford that book because she has________money. A. a lot of B. few C. a little D. little. 13. When was that book ________? A. made B. produced C. published D. created. 14. She spoke quietly to him ________nobody also could hear a word. A. because B. if C. although D. so that 15. He was ________ill that he couldn’t get up. A. such B. so C. much D. too. 16. We consider him ________.A. our father B. is our father C. be our father D. to be our father. 17. I don’t like the place ________he lives. A. that B. which C. where D. what 18. That man is ________ deaf to hear what we say A. so B. enough C. too D. not 19. It’s very crowded here. I wish ________A. there were a few people B. there is no one C. there weren’t so many people D. there was somebody here 20. Ann’s birthday is ________ February 14th A. in B. on C. for D. at 21. They ________in that house for several months. A. live B. lived C. have lived D. are living 22. My father ________teaching in a small village 10 years ago. A. starts B. started C. has started D. is starting 23. We have lived in Ha Noi ________ 4 years A. in B. since C. for D. at 24. Lan and Maryam are penpals. They ________each other twice a month. A. writing B. write C. has written D. wrote 25. Lan enjoyed the peaceful atmosphere ________Maryam was praying. A. when B. during C. while D. where 26. She has taught English here ________ 10 years. A. in B. for C. since D. from 27. He wishes he ________fly A. can B. will C. should D. could 28. Vietnamese language is different ________English language. A. from B. on C. in D. at 29. A: Would you like to have lunch with us? B: _________________. A. All right B. Yes, I would C. No, I wouldn’t like D. Yes, I’d love to 30. A: Congratulations on your winning B: _________________. A. You’re welcome B. That’s very kind of you C. No, thanks D. Yes, of course 31. A: Shall I get a taxi for you? B: _________________. A. Yes, I’d love to B. Oh, that would be nice C. Let’s do D. Yes, why not? 32. A: Could you mail this letter for me, please? B: _________________. A. No, I couldn’t B. I’ll try C. Yes, here it is D. I’m sorry, I can’t 33. A: How about going out to dinner tonight? B: _________________. A. Oh, thank you B. Yes, please C. No, I don’t want to D. I’m afraid not 34. Family members who live apart try to be together at Tet. A. beside B. away C. near D. close 35. A: Would you mind lending me your bike? A. Yes, here it is B. No, not at all C. Yes, let’s D. Good idea 36. A: Why don’t we go for a picnic this weekend? A. What do you suggest? B. Yes, please C. How’s that? D. That’s a good idea 37. She often goes ________church to pray because her religion is Islam. A. on B. at C. of D.