Một hỗn hợp khí gồm C2H4 và CO2. làm thế nào để thu khí C2H4 tinh khiết

Ngày ngày mặt trời đi qua trên lăng bác Thấy một mặt trời trong lăng rất đỏ. Hãy phân tích ý nghĩa hình ảnh"mặt trời " trong câu t2 trong việc thể hiện lòng ngưỡng mộ và biết ơn đối với Bác của tg?

Câu 1: Đới khí hậu nào nhận được lượng nhiệt và góc chiếu ánh sáng từ mặt trời trung bình : A: Ôn đới B: Nhiệt đới C: Hàn đới D: Cận nhiệt đới Câu 2: Đới khí hậu nào trong năm có 4 mùa xuân, hạ, thu, đông rõ rệt? A: Nhiệt đới B: Ôn đới C : Hàn đới D : Cận nhiệt đới Giúp mk vs ạ, mk đang cần gấp🤗🤗🥰🥰❤️

hãy trình bày xuất xứ ,thể loại và nội dung của bài thơ đi đường

x^2-(m+1)x+m=0 chứng minh phương trình trên luôn có nghiệm với mọi giá trị m

Cho tam giác ABC cân tại A. Kẻ AD vuông góc BC. Chứng minh ABD = ACD

Một khu vườn hình chữ nhật có chu vi 0,76 km. Biết chiều dài bằng 10/9 chiều rộng. Hỏi diện tích khu vườn là bao nhiêu mét vuông? bao nhiêu hec-ta? ​ chiều rộng. Hỏi diện tích khu vườn là bao nhiêu mét vuông? bao nhiêu hec-ta?

Chất đốt khi cháy được dùng để làm gì? Giúp mình với mình cần gấp

III. Choose the best answer (A, B, C or D). 1. I usually play football when I have . A. spare time B. good time C. no time D. times 2. In team sports, the two teams against each other in order to get the better score. A. are B. do C. make D. compete 3. draw on the walls and tables, please. A. Do B. Don‟t C. Should D. Shouldn‟t 4. Nam plays sports very often, so he looks very . A. sport B. sports C. sporty D. sporting 5. Last summer, I fishing with my uncle in the afternoon. A. go B. went C. goes D. going 6. Have you ever to London? A. be B. being C. been D. gone 7. People in Tokyo are very polite friendly. A. or B. and C. but D. so 8. Do you know drink in Viet Nam? A. popular B. more popular C. more and more popular D. the most popular 9. When we were in Stockholm, we had coffee and cakes …a coffee shop the Old Town. A. on - on B. at - at C. in - in D. on - at 10. The Eiffel Tower is the most landmark in the world. A. visit B. visiting C. visited D. to visit 11. Super cars will water in the future. A. go by B. run at C. run on D. travel by 12. The robot will of the flowers in the garden. A. take care B. take note C. be careful D. carry 13. The house will have a super mart TV to the e-mails. A. send and post B. send and receive C. get and take D. receive and get 14. pencils and rapper, every student will have a computer. A. By B. Instead C. Instead of D. At 15. We might have a TV to watch TV programmes from space. A. wireless B. remote C. automatic D. local 16. My brother wants to become a to tell TV viewers what the weather is like. A. newspaper B. actor C. weatherman D. producer 17. TV can join in some game shows through telephone or by mail. A. people B. weatherman C. newsreaders D. viewers 18. are films by pictures, not real people and often for children. A. Documentaries B. Love stories C. Cartoons D. Detective stories 19. Are there any good programs teenagers on TV tonight? A. to B. for C. of D. with 20. My father works late tomorrow, so he will the first part of the film on VTV1. A. miss B. lose C. forget D. cut

III. Choose the best option marked A, B, C or D to complete each sentence. (2.5 points) 1. Is Kuala Lumpur different ___________ Ha Noi? - The two cities are the same in some ways. A. with B. at C. from D. of 2. He wishes he ___________ a good student. A. were B. was C. is D. will be 3. I have met him ___________ over 9 years. A. for B. ever C. since D. never 4. Today young generation is fond ___________ wearing Jeans. A. with B. of C. in D. on 5. If the test ___________ well, my parents will take me to Hanoi. A. do B. does C. is done D. did 6. Susan studied very well, ___________ she could pass the exam easily. A. if B. so C. but D. or 7. Do you enjoy ___________ people from other countries? A. meet B. meeting C. to meet D. met 8. This school ___________ here ten years ago. A. built B. is built C. was built D. has been built 9. My father said he ___________ me a new bike the following week. A. buys B. would buy C. bought D. will buy 10. They asked me ___________ I liked watching T.V. A. if B. whether C. that D. Both A&B are correct IV. Read the following passage, then do the tasks below: The ao dai, the traditional dress of Vietnamese women, has been mentioned in many poems, novels and songs. It is a long silk tunic that is slit on the sides and worn over loose pants. Vietnamese women usually wear it, especially on special occasions such as Tet, Vietnamese Teachers’Day, or Wedding Anniversary. Nowadays, some fashion designers have made it more and more beautiful by changing the traditional ao dai. Some of them print lines of poetry on it, or they add the patterns such as sun, stars, crosses, and stripes to the ao dai. The ao dai becomes the national clothing, just like Kimono in Japan. Every morning, thousands of schoolgirls in white ao dai make the streets look nicer. Vietnamese women continue to wear this unique and fashionable dress. *Choose True (T) or False (F). (1.0 point) 1. The ao dai is the traditional dress of Vietnamese women. 2. Vietnamese women never wear the ao dai on special occasions. * Answer the questions. (1.5 point) 3. What is the traditional dress of Vietnamese women? 4. Do Vietnamese women usually wear the ao dai on special occasions? 5. What occasions is the ao dai worn on? V. Write the second sentence so that it has a similar meaning to the first one. (2.5 points) 1. I last saw her three years ago. I haven’t ................................................... ………………............................ 2. Because Hoa worked hard, she passed the exam. Hoa worked ................................................................................................... 3. I’m sorry I can’t speak English well. I wish ……………………………………………………………………… 4. “ What is your address?” Lan asked. Lan asked me …………………………………………………………….. 5. Someone is going to repair my TV set tomorrow. My TV set ……………………………………………………………..