GIẢI THÍCH NỮA NHA K GIẢI THÍCH MÌNH BÁO MOD XÓA ĐÓ

Một viên bi khối lượng 150g đang đứng yên trên mặt phẳng ngang thì chịu tác dụng của một lực không đổi theo phương ngang có độ lớn 2.25 N. Sau khi đi được 2s thì ngừng tác dụng lực đồng thời viên bi này va chạm vào viên bi thứ hai có khối lượng 300g cũng đang đứng yên. Bỏ qua ma sát. A. Tính động lượng viên bị thứ nhất ngay khi và chạm B. Sau va chạm 2 viên bi dính vào nhau và cùng chuyển động với vận tốc V. Tính V

Một hình lập phương có diện tích toàn phần là 6337,5 dm² thì diện tích một mặt của hình lập phương đó là.................m²

So sánh sự khác biệt giữa khởi ngữ trạng ngữ và thành phần biệt lập

Cho hàm số: y= f(x) = -3x. a. Vẽ đồ thị hàm số trên. Nêu cách vẽ. b. Tính f(2); f(-1/3) c. Trong các điểm sau, điểm nào thuộc đồ thị hàm số trên: M (-1/3;-1) ; N (-6;18)

Cho A=a+b-5 ; B=-b-c+1 ; C=b-c-4 ; D=b-a Chứng minh A+B=C-D

Cho ABC cân tại B, có ∠A= 70độ . Tính số đo ∠B?

Giúp mình nha ! Cảm ơn moi người nhiều !

GIẢI THÍCH NỮA NHA K GIẢI THÍCH MÌNH BÁO MOD XÓA ĐÓ

1. The ___________ are the people who don’t have accommodation. A. elderly B. sick     C. homeless D. disabled 2. English is the ___________ language of many countries such as the US, the UK, and Australia. A. international B. usual C. popular D. official 3. After a month, Jenny got used to ____________ in her new school. A. studying B. study C. studied D. to study 4. Her son was absent from school ____________ his illness last Tuesday. A. because B. although C. because of D. despite of 5. She spends 1 hour ____________ English every day. A. learn B. to learn C. learning D. learns 6. A: “I have bought you a toy. Happy birthday to you.” B: “ __________” A. The same to you B. Have a nice day! C. What a pity D. What a lovely toy !Thanks 7. “How long have you known him?” A. Since 5 years B. For 5 years C. Ever since 5 years D. Along 5 years 8. In Canada, New Year’s Day ____________ a long tradition of celebration. A. have B. has C. will have D. had 9. First names ____________ used more frequently in Australia than in other countries. A. are B. is C. was D. were 10. ______ is an ancient story about a place or a person that may or may not be true. A. A sci-fi B. A legend C. A fairy tale D. A picture- book Mark the letter A, B, C, or D to indicate the words OPPOSITE in meaning to the underlined words in each of the following questions 11. The number of patients of Sars-Covid2 has increased fast all over the world. A. decreased B. developed C. given D. cutdown 12. What time does the flight from London arrive? A. happen B. end C. approach D. depart Mark the letter A, B, C, or D to indicate the words CLOSEST in meaning to the underlined words in each of the following questions 13. The public speaking English begins at 11am on Saturday. A. finishes B. closes C. starts D. ends 14. Police are carrying out investigation to find the missing documents. A. available B. absent C. expected D. lost Read the passage and do the tasks, choose the best option Alaska is perhaps the most amazing state in the USA. It has coastlines facing both the Arctic Ocean and the Pacific Ocean. This state has an incredible three million lakes. That’s four lakes per person living there. Many cities in Alaska cannot be reached by road, sea, or river. The only way to get in and out is by air, on foot, or by dogsled. That’s why Alaska has the busiest sea airport in the world, Lake Hood Seaplane Base. Nearly two hundred floatplanes take off and land on the water of this airport every day. It is a really fun scene to watch. Alaska is called the land of Midnight Sun because in summer, the sun does not set for nearly three months. But in winter the sun stays almost unseen. All Alaskans take special pride in their beautiful and unique state. 15. Alaska ___________. A. is another name for the USA B. is an island in the Pacific Ocean C. has coastlines facing both the Arctic Ocean and the Pacific Ocean 16. Which statement below is NOT CORRECT? A. In Alaska, the number of lakes is bigger than that of people. B. There is one lake for each person living there. C. Alaska has an incredibly high number of lakes. 17. Which method (phương pháp) below can always be used to reach a place in Alaska? A. by air B. by road C. by river 18. In Alaska we can always see the sun ___________. A. in winter B. in summer C. every month of the year 19. Alaska is perhaps the most …………… state in the USA. It has over three million lakes. A. puzzling B. festive C. amazing 20. Many cities in Alaska ______ by road, sea, or river A. cannot be reached B. can be reached C. can reach