Tìm x,y biết 4(2016 - x)$^{2}$ + 3|y - 3| = 42 ( x,y ∈ Z)

cây điều có phải cây hạt trần ko,Vì sao?

Cho em hỏi nmoon địa lý vs môn lịch sử mấy câu đó đc ko ạ giúp em vs em sẽ cote 5 sao

Giải hộ mik 2 câu này vs ạ mik cảm ơn

Chúng ta cần sử dụng mọi nguồn năng lượng như thế nào?

Làm giúp mình với ạ mình cần nộp luôn bn nào làm được giúp mình nha c.ơn nhiều

Giúp mình với Người ta dùng 1 máy biến thế có cuộn sơ cấp 8000 vòng, cuộn thứ cấp có 200 vòng mắc vào mach điện xoay chiều thì thu được hiệu điện thế ở 2 đầu cuộn thưa cấp là 220V. a) Máy biến thế trên là máy tăng thếhay hạ thế? Giải thích. b) Máy này được đặt ở vị trí nào trên đường dây tải điện? c) Tính hiệu điện thế đặt vào 2 đầu cuộn sơ cấp.

she didn't visit you becuse she didn't know you were in hospial => If

I. Find the word which has a different sound in the part underlined 1. A. delicious B. like C. nice D. fine 2. A. postcard B. come C. home D. so 3. A. motor B. money C. show D. robot 4. A. near B. bear C. idea D. appear 5. A. here B. series C. sphere D. there 6. A. match B. square C. badminton D. grandfather 7. A. programme B. sport C. most D. show 8. A. thirty B. them C. both D. theme 9. A. schedule B. when C. red D. comedy 10. A. brother B. through C. then D. weather II. Find which word does not belong to each group. 1. A. director B. viewer C. audience D. watcher 2. A. international B. local C. national D. boring 3. A. gym B. athlete C. player D. swimmer 4. A. swimming B. high jump C. running D. marathon 5. A. hobby B. interest C. music D. pastime 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 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 IV. Complete the sentences with and, so, but or because. 1. I didn‟t feel well I stayed at home.. 2. He liked her she was happy. 3. I liked Spain I wanted to go home. 4. She likes swimming jogging. 5. We were late there was an accident

hỗn hợp khí x gồm o2 và o3 có tỉ khối hơi so với oxi là 1,3. tính % về khối lượng của mỗi khí trong hỗn hợp