xin 5* và hay nhất ạ
Xét tính chẵn lẻ của hàm số y=sin⁴x
Cho hai miếng bìa hình tròn A và B. Miếng bìa A có bán kính bằng 1/4 miếng bìa B, và miếng bìa A lăn xung quanh miếng bìa B đúng 1 vòng. Hỏi miếng bìa A đã tự xoay quanh tâm của nó bao nhiêu vòng? A. 2 B. 2,5 C. 4 D. 4,5 E. 6
Giải giúp mn câu hỏi này nhé.Trả lời nhanh và chính xác, thì tớ sẽ đánh 5*. Cảm ơn☺️
8/ He is _______ student in the USA, he will study in the USA in two years a. a change b. an exchange c. a. learning d. a changing 9/ Mr Brown does the farming work, while Mrs. Brown ______ part time in a grocery store. a. does b. gets c. takes d. works 10/ Peter is as old as Tam. They are at the same________ a. year b. old c. age d. time 11/ In the afternoon, when Tam _______ his homework he helps Mr Brown on the farm. a. ends b. completes c. finishes d. both b and c 12/ He is giving food to the chickens. He is __________ the chickens a. fooding b.nursing c. feeding d. earing 13/ Tam also helps _________ the chickens. He is __________ the chickens. a. collect b. gather c. pick d. take 14/ Tam doesn’t go to school on Saturdays and Sundays. He doesn’t go to school on _____ a. weekdays b. other days c. weekends d. any days 15/ The Brown are _________ so Tam likes them very much. a. welcomed b. cold c. friendship d. nice 16/ Tam likes the Brown, he enjoys being a ______ of their family. a. past b. student c. member d. boy 24/ They first met __________ they were at high school. a. while b. since c. when d. where 27/ Everybody _________ present in the meeting hall now. a. are b. is c. being d. is being 30/ There is a shrine ________ the top of the mountain near the lake. a. in b. on c. at d. to Help mee
Viết về hoạt động giúp đỡ/ tình nguyên người khuyết tật Nhanh cho đúng nhất ạ
cíu tui i tr hứa cho ctrlhn
ba tấm vảo dài 22m75cm ,tấm thứ nhất gấp đôi tấm thứ 2, tấm thứ 3 bằng 1/2 tấm hai. Tính mỗi tấm vải
Giải giúp e câu 5 với ạ, please!!!! Đừng dùng bảo điện tích ạ !!! Dùng sơ đồ phản ứng cũng được ạ 😅!!!!
Số học sinh của hai lớp 7A và 7B tỉ lệ 8 và 9. Số học sinh lớp 7B nhiều hơn số học sinh lớp 7A là 5 học sinh. Vậy số học sinh lớp 7A và 7B lần lượt là
1. They used _______ in the countryside. A. to living B. living C. to live D. live 2. What should we do to reduce the level of environmental ______? A. pollution B. pollute C. polluted D. polluting 3. I _______ John since he moved to our neighborhood. A. knew B. has known C. have known D. know 4. They haven’t finished the project, ________? A. haven’t they B. have they C. do they D. don’t they 5. “Thanks for your help.”- “_______” A. My pleasure. B. Don’t worry C. Thank you, too. D. The same to you. 6. He asked me ________? A. where did I live B. where I lived C. where do I live D. where I live 7. “ I’ve passed my final exam.” - “-------------.” A. Good luck! B. It’s nice of you to say so. C. That’s a good idea. D. Congratulations! 8. I’ve looked _______ my book everywhere but I can’t find it. A. for B. after C. at D. in 9. This department store ________ three years ago. A. built B. was built C. builds D. is built 10. Joe has three sisters. He wishes he _______ a brother. A. have B. will have C. has D. had 11. I suggest_____________ some money for poor children. A. raise B. raising C. to raise D. raiseing 1 2. She didn't work hard enough, ____________she lost her job. A. so B. but C. and D. although. 1 3. What ____________ if there were a serious nuclear accident ? A. happens B. will happen C. happened D. would happen 14. Please phone this number for more _____________. A. inform B. informative C. information D. informatively 15. Tom plays soccer very well ,_____________? A. does he B. doesn't he C. did he D. didn't he. 16. “Let’s meet for a coffee to night.”-“_____” A. I hope not B. I’m afraid I can C. Yes, let’s D. Yes, thank you 17. The car____________ he has just bought is very expensive. A. which B. who C. whom D. whose 18. Family members_____________ live apart try to be together at Tet. A.which B. who C.whom D.whose 9.We are____________when the New Year's Eve is coming very near. A.excitement B. excitedly C. excited D.exciting 20. _____________ I was really tired, I couldn’t sleep. A. Although B. So C. Therefore D. However 21. Maths and Literature are ….................subjects at school. A. compulsory B. chosen C. optional D. free 22. The man ……………………is sitting at that desk is my form teacher. A. whom B. who C. which D. where 23. “_______”- “Certainly.” A. Welcome back! B. What are you doing there? C. I’m sorry I’m late D. May I borrow a pencil, please? 24. If we ........ much pesticide on vegetables, the vegetables will become poisonous and inedible. A. use B. used C. are using D. have used 25. He wishes he…………………a doctor now. A. is B. was C. were D. would be 26. He is tired now……...….. he stayed up late watching TV. A. so B. because C. but D. and 27. We have learnt English ………………. 2001. A. in B. during C. for D. since 28. “Pass me that pen, please!” ~ “________”. A. Yes, please B. No, it isn’t C. Here you are D. It doesn’t matter 29. Let’s go swimming,…………………..? A. won’t we B. don’t we C. do we D. shall we 30. He................with friends in an apartment in HCM city for two weeks. A. living B. lived C. has lived D. live 31. We used to ……….past the market on the way to school. A. walk B. walked C. walking D. have walked 32. Remember to turn …….the light when leaving the office. A. off B. on C. down D. in 33. “I’m afraid I can’t come to your birthday party this weekend!”-“___________” A. What a shame! B. What a pity! B. Me too. D. What a happened ? 34. Lan is very tired. ________, she has to finish her assignment before going to bed. A. Although B. So C. Therefore D. However 35. I suggest________some money for poor children. A. raise B. to raise C. raised D. raising 36. Have you ever ………a letter to the local authorities to complain about the public transport in your town? A. wrote B. writing C. written D. write 37. When are you ………vacation with your family, Lan? A. on B. by C. with D. to 38. If you ……late, you wouldn’t finish your work. A. come B. coming C. to come D. came
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