𝐂â𝐮 𝟏.[NB] Biểu thức nào sau đây không là đơn thức∶ A. 4x3y(− 3x ) B. 1+ 𝑥 C. 2xy (− x3 ) D. 17𝑥2.(−13)𝑦3 𝐂â𝐮 𝟐.[𝐓𝐇] Tích của hai đơn thức 2x2yz và (−4xy2z)bằng∶ A. -8x3y3z2 B. -8x3y3z C. -6x2y2z D. 8x3y2z2

16. Our resources of energy will soon end because we won’t try to save it. If __________________________________________________________ 17. She likes to live in the countryside. She enjoys __________________________________________________________ 18. __________________________________________________________? The new programme often finishes at eight o'clock. 19. It is necessary for us to be present at the class discussion on Saturday. We must 20. I find it difficult to find a better solution to that problem. I have 21. How much is this hat? How much does ____________________________________________? 22. Why don’t we sing an English song? What about ____________________________________________? 23. What’s your father’s weight? How heavy ____________________________________________? 24.Doing exercises every morning is good for you. It ____________________________________________ 25. Lan likes playing tennis the most. Tennis ________________________________________ 26. My brother plays the guitar very well. My brother is ___________________________________ 27. Nick has never been to Da Nang before. This is _________________________________________ 28. Miss Lan teaches us Vietnamese everyday. ____________________________________________ 29.He is going to saty in Hanoi for a week. ____________________________________________ 30. It takes me fifteen minutes to walk to school. ____________________________________________

Sục từ từ khí $\rm CO_2$ vào $\rm 600ml$ dung dịch gồm $\rm KOH$ $\rm 0,15M$ và $\rm Ca(OH)_2$ $\rm 0,2M$ $\rm a)$ Lập luận và vẽ đồ thi biểu diễn số mol kết tủa phụ thuộc vào số mol khí $\rm CO_2$ hấp thụ. $\rm b)$ Tính số mol khí $\rm CO_2$ bị hấp thụ khi khối lượng kết tủa thu được là $\rm 6g$

Đặt câu hỏi cho phần đc gạch chân : 1. They spent two hours looking for your house => 2. They had an exam last week =>

Giúp tớ nhanh ạ!! Ko cần giải thích

Trong các hình sau: hình chóp đều, hình chóp cụt đều, hình lăng trụ đứng, hình hộp chữ nhật, hình lập phương, có bao nhiêu hình có mặt bên vuông góc với mặt đáy?

1. It’s not good to spend a lot of time watching TV. You ___________________________________________________________ 2. Antarctica is colder than any other place in the world. Antarctica is ___________________________________________________________ 3. Shall we go to Times Square to welcome the New Year? Why don’t ___________________________________________________________ 4. A bicycle is more convenient than a car in towns. A car is ___________________________________________________________ 5. Turn right at the first turning. Take ___________________________________________________________ 6. I won't be able to do anything unless I have a quiet room. If ___________________________________________________________ 7. ___________________________________________________________ ? They go to the English club twice a week. 8. ___________________________________________________________ ? She missed a week's lessons because of illness. 9. ___________________________________________________________ ? That newsreader usually gets to work by bus. 10. ___________________________________________________________ ? The game show lasted for two hours and a half. 11. You can trust me to finish the exercise on time. I promise___________________________________________________________ 12. I advise you not to eat lots of sweets. You___________________________________________________________ 13. The children like to watch dragon dance in the street at Tet. The children enjoy __________________________________________________________ 14. It's the first time that I have ever talked to a foreigner. I have __________________________________________________________ 15. Phong was sleepy, but he still stayed up late to watch the end of the game on TV. Although__________________________________________________________

Vẽ anime NL : ố ô Siêu sao rồi

I am trying to imagine the possible reaction of a middle-aged rock singer ____ his latest album will never get played on the radio simply because of his age. A. having just told B. having just been said C. just saying D. just told Câu nào đúng thì giải thích cho em hiểu vì sao lại chọn câu đó được không ạ?

làm hộ Dạng 5 : Phân tích đa thức thành nhân tử bằng phương cách phối hợp nhiều phương pháp