Tính (-10)+(-11)+(-12) bà chấm (-19)+(-20)

a. Hãy sắp xếp các nguyên tố sau theo chiều hoạt động hóa học của kim loại tăng dần: Cu, K, Fe, Al, Au, Mg b. Dd muối AlCl3 có lẫn tạp chất CuCl2. Có thể dùng chất nào để làm sạch muối nhôm. Viết PTHH (nếu có)

1 Xác định luận điểm và bố cục của văn bản '' Tình yêu nước của nhân dân ta'' 2 Để làm rõ luận điểm tác giả đã sử dụng những dẫn chứng nào ? Dẫn chứng được sắp xếp theo trình tự ra sao?? Ai đúng 5 sao và cảm ơn

Bài 1: Trên đường thẳng xy lấy 4 điểm A,B,C,D theo thứ tự đó. Gọi E là một điểm nằm ngoài đường thẳng xy. Vẽ các tia EA, EB,EC,ED. a) Có mấy góc đỉnh E, đó là các góc nào? b) Trong bốn tia EA, EB, EC, ED tia nào nằm giữa hai tia còn lại ? Bài 2: Vẽ hình theo cách diễn đạt bằng lời trong mỗi trường hợp sau: a) Vẽ góc bẹt mAn b) Vẽ góc cNb và bNc saoc ho tia Nb nằm trong góc aNc. c) Vẽ các góc xOy, yOz, zOt , tOx sao choxOz là góc bẹt, hai tia Oy và Ot nằm trên hai nửa mặt phẳng đối nhau bở xz

out of this world. It brings them coverage of America’s astronauts as the astronauts explore (21)_______ space. In addition to all these things, television brings its viewers a steady stream of programs that are (22)______ to entertain. In fact, TV provides many (23)_____ entertainment programs than any other kind. The programs include dramas, comedies, sports, and (24)______ pictures. 19. a. ways b. means c. ranges d. shows 20. a. at b. in c. for d. about 21. a. deep b. large c. outer d. open 22. a. happened b. designed c. composed d. guided 23. a. more b. even c. most d. hardly 24. a. lovely b. clear c. motion d. full Read the following passage, and then answer the questions There are two main kinds of sports: team sports and individual sports. Team sports are such sports as baseball, basketball and volleyball. Team sports require two separate teams. The teams play against each other. They compete against each other in order to get the best score. For example, in a football game, if team A scores 4 goals and team B scores 3 goals, team A wins the game. Team sports are sometime called competitive sports. 25. How many main kinds of sports are there in the world? 26. Can you name some team sports? 27. How many teams do team sports require? 28. Why do two separate teams compete against each other? 29. What are team sports sometimes called?

một hình chữ nhật có diện tích là 100 m^2 . nếu giữ nguyên chiều dài tăng chiều rộng lên 2 lần thì diện tích là bao nhiêu

6). Sử dụng Such that hay so that để hoàn thành các câu bên dưới 1. Jessica is a brilliant woman that everyone admires her. 2. He made an unforgivable mistake that it caused him his marriage. 3. She is shy that she would only talk to her parents. 4. The teacher was tired that she had to dismiss the class.

Hòa tan hoàn toàn 18 gam một kim loại M cần dùng 800ml dung dịch HCl 2,5M. Xác định kim loại M. Biết hóa trị của kim loại trong khoảng từ I đến III.

Trong văn bản “Bài học đường đời đầu tiên ” của Tô Hoài, em thấy thương nhân vật nào nhất ? Vì sao ?

3.A. clothes B. fireworks C. scissors D. mountains 4.A. stadium B. place C. paddy D. lake 5.A. lunch B. music C. unpopular D. study II. Complete the sentences below using the correct form of comparative or superlative adjectives. Ex: - Lan is Hoa. (tall) Lan is taller than Hoa. - Nam is student in his class. (young) Nam is the youngest student in his class. 1. A new house is ……………………………… an old one. (expensive) 2. Motorbikes are ……………………………… bicycles. (fast) 3. My television is ……………………………… his television. (modern) 4. Summer is ……………………………… Spring. (hot) 5. Jane is ……………………………… her sister. (beautiful) 6. Skirts are ……………………………… dresses. (cheap) 7. Her English is ……………………………… my English. (good) 8. A bicycle is often ……………………………… a car in busy cities. (convenient) 9. Nile River is ……………………………… river in the world. (long) 10.This book is ……………………………… of these books. (interesting) 11. Ho Chi Minh City is ……………………………… city in Viet Nam. (big) 12.They are ……………………………… students in my class. (good) 13.These houses are ……………………………… in the village. (beautiful) 14.Winter is ……………………………… season in the year. (cold) 15.Airplane is ……………………………… means of transport. (fast) III. Give the correct form of the verbs in the simple future. 1. ……………………………… (they / come) tomorrow? 2. When ……………………………… (you / get) back? 3. If you lose your job, what……………………………… (you / do)? 4. They ……………………………… (do) it for you tomorrow. 5. My father ……………………………… (call) you in 5 minutes. 6. ……………………………… (she / get) the job, do you think? 7. We believe that she ……………………………… (recover) from her illness soon. 8. What ……………………………… (the weather / be) like tomorrow? 9. I promise I……………………………… (return) from school on time. 10. ( you / show )……………..me how to operate the new machine, please ? IV. Fill in the gap with should/ shouldn’t/ must/ mustn’t : 1.I don’t think you ………………………eat so much chocolate. It’s bad for your health. 2.I think waiters………………………………try to be pleasant with customers. 3.If you feel sick, you ……………………………… stay at home. It’s better for you. 4.I ……………………………… get my hair cut. I don’t like long hair. 5.We ………………………… go home. My mother has told me to arrive at ten o’clock. 6.I ……………………………… study hard. I want to pass the exam. 7.You ……………………………… accept things from strangers! 8.You ……………………………… steal things from shops.