một người thợ sử dụng thước ngắm có góc vuông đề đc hình như bên khoảng cách từ vị trí gốc cây đến vị trí chân đứng của người thợ là 4,8m và từ vị trí chân đứng thẳng trên mặt đất đến mắt của người ngắm là 1,6 m hỏi với các kích thước trên thì người thợ đo đc chiều cao của cây đó là bao nhiêu ( làm tròn đến mét ) tái bút : chụp hình thì càng tốt

17. Choose the best answers: ____________ is La Tomatina celebrated? – Every August. * Why Which When Where 18. Find out the mistake in each sentence: At this time next week, we will take a test on sources of energy. * on At sources of will take 19. Odd one out: * should have to will must 20. Choose the best answers: Lan used to ________ morning exercise when she got up early. * doing do does did 21. Choose the correct sentence that has the same meaning as the first one: What is the distance between Son Tay town and Ha Noi city? * What about is the distance from Son Tay town to Ha Noi city? How about is the distance from Son Tay town to Ha Noi city? How far is it from Son Tay town to Ha Noi city? How far it is from Son Tay town to Ha Noi city? 22. Choose the best answers: My father liked the ____________ of that actor. * performing performance performer perform 23. Choose the best answers: You should study hard ________the coming exam. * with to for of 24. Find out the mistake in each sentence: Wind, hydro and solar is renewable resources. * and is hydro resources 25. Choose the best answers: The performers are trying their ………………… to get everyone’s attention. * best good better well 26. Find out the mistake in each sentence: Our school celebrate the school festival next week. * celebrate the school Our next week 27. Choose the correct sentence that has the same meaning as the first one: Although they are short, they still love playing basketball. * Despite being short, they still love playing basketball. Despite they are short, they still love playing basketball. In spite being short, they still love playing basketball. In spite of they are short, they still love playing basketball. 28. Choose the best answers: – “ Do you like seeing a film?” – “_________________” Sure. What film shall we see? I’m sorry, I can’t. Who is in it? No, I don’t like it at all 29. Choose the best answers: Birthday is a family………………… celebrating celebration celebrated celebrations 30. Choose the best answers: My father __________the bus to work every day, but I cycle. goes drives catches runs 31. Choose the best answers: The play was so boring; ________, Hoa saw it from beginning to end. A. Although B. Nevertheless C. Despite D. Therefore 32. Choose the best answers: Our teacher …………….me answer all the questions daily. A. was made B. makes C. was make D. made

tìm tập xác định 3tan (2x- $\frac{x}{3}$ )

vì sao các động vật ở đới lạnh thường hoạt động vào ban ngày mùa hạ

Dung dịch A chứa hỗn hợp HNO3 0,5M và H2SO4 0,3M, dung dịch B chứa hỗn hợp NaOH 0,2M và Ca(OH)2 0,05M. Tính V (ml) dung dịch A cần để trung hòa hết 2000ml dung dịch B

2021-1+1+1+1+...+1(có 1001 số 1) Làm hộ con ạ

Các bạn ơi giúp mình với🥺 Mình cần phần c ạ ♥‿♥

Tìm min B = 2/1 – 5x + 1/x với 0 < x < 1/5

II. Put the verb in bracket into the present continuous tense or simple present tense. 1. What ____________ she (cook)________________ for dinner tonight? 2. What__________ she often (do) ___________ in the evening? 3. The last train (leave) __________ the station at 11 o’clock. 4. Keep silent! You (talk) ___________so loudly. 5. I (not stay) __________________ at home at the moment. 6. Now she (lie) __________________to her mother about her bad marks. 7. At present they (travel) ___________to New York. 8. He (not work) _____________in his office now. 9. Hoa (have)________________ a birthday party tonight. 10. We (practice) ______________ speaking English now. III. Read the answers and complete the questions. 1. Where ________________________________________________________________ ? I live at 215 Le Loi Street. 2. What time _____________________________________________________________ ? I get up at six o’clock every morning. 3. What _________________________________________________________________ ? I often brush my teeth and do morning exercise until half past six. 4. When ________________________________________________________________ ? I usually leave for school at quarter to seven. 5. How _________________________________________________________________ ? I walk to school. 6. Where ______________________________________________ ? At home or at school? I usually have breakfast at home, but sometimes at the school canteen. 7. How long______________________________________________________________ ? School time lasts from haft past seven to eleven o’clock. 8. How many lessons ________________________________________ in the morning? I usually have three lessons in the morning. 9. How often ____________________________________________________________ ? I have English lesson three times a week. 10.Which subject _______________ best? I must say it’s Math. I like it best of all the subjects.

Trên mạch gốc của gen cấu trúc có 1500 nuclêôtit và có 15% nuclêôtit loại ađênin. Trong quá trình sao mã, gen đã sử dụng của môi trường 1125 ribônuclêôtit loại uraxin. Số lần sao mà và số lượng nuclêôtit của gen nói trên là bao nhiêu?