Cho tam giác ABC vuông cân tại A, BC = 2cm. Ở phía ngoài tam giác ABC vẽ tam giác ACE vuông cân tại E.a)Chứng minh rằng AECB là hình thang vuông.b)Tính các góc và các cạnh của hình thang AECB

Viết văn về loài cây em yêu(phượng vĩ) viết dài 2,5 mặt giấy

Cho TG ABC có trung tuyến BE ; CF chứng minh BCEF là hình thang

1.(x+y).(x^2+2xy+y^2) 2.(x-y).(x^2-2xy+y^2) 3.(x+y).(x-xy+y^2) 4.(x-y).(x^2+xy+y^2)

Bài 3: (4 điểm) Xem hình vẽ, cho biết a// b và c a a) Đường thẳng c có vuông góc với đường thẳng b không? Vì sao? b) Cho đường thẳng d cắt hai đường thẳng a và b tại A và B. Cho biết góc A1= 1150. Tính số đo các góc B2; B3; A3. c) Gọi Ax và By lần lượt là tia phân giác của các góc A1 và B3. Chứng minh: Ax //By.

21. Prices get .................. A. high and high B. highest and highest C. more and more high D. higher and higher 22. The more manufacturers advise, .................. they sell. A. the most products B. the products more C. the more products D. most products 23. ................. a car is ................. it is. A. The more expensive/ the comfortabler B. The most expensive/ the most comfortable C. The more expensive/ the more comfortable D. The less expensive/ the more comfortable 24. Of the five students. Mary is ................. A. more intelligent B. the more intelligent C. most intelligent D. the most intelligent 25. Steel is ................ than wood. A. more heavy B. as heavy C. heavier D. more heavier 26. A super market is …………………… a shopping center. A. less convenient as B. less convenient than C. not so convenient than D. the most convenient as 27. Viet Nam becomes …………………… to foreign tourists. A. more and most attractive B. the more attractive C. much and more attractive D. more and more attractive 28. This car is …………………… than mine. A. less expensive B. as expensive C. expensive D. not so expensive 29. Tim’s grades are …………………… than John. A. worse B. worst C. as bad D. so bad 30. The …………………… we start, the sooner we will be back. A. early B. earliest C. earlier D. more early V/Viếtlạicâusửdụng so sánhkép: 1. He learns more. He becomes smarter. 2. The wind is strong. The rain is big. 3. Hể reads a lot. He knows a lot. 4. She eats a lot. She becomes fat. 5. He plays video games a lot, He is stupid. 6. She sleeps a lot. She becomes lazy.

Cho 12,08 gam hỗn hợp hợp Ca và CaO tác dụng hết với nước, sau phản ứng thu được dung dịch chứa 18,5 gam Ca (OH)2 và có V lít H2 (đktc) thoát ra . Tính V Giúp tui ik

IV/ 1. The more she smiles , ................ she becomes. A. more graceful B. the most graceful C. most graceful D. the more graceful 2. Hotels have developed …………………… restaurants. A. as rapidly as B. so rapidly as C. as rapid as D. more rapid 3. Can Thobridge is the …………………… one in the South of Viet Nam. A. long B. shortest C. longest D. longer 4. Albert Einstein’s contributions to scientific theory were ................ those of Galileo and Newton. A. important than B. more important C. the most important D. as important as 5. Impalas cannot move as ................ cheetahs but they are more efficient runners. A. faster than B. fast as C. fast D. are fast as 6. Both are informative articles, but this one is ................ . A. best B. the best C. most D. better 7. She is the .………… girl in our town. A. more beautiful B. beauty C. most beautiful D. more beautifully 8. The harder you learn............. A. The better is your English B. The better will be your English C. The better becomes your English D. The better your English will be 9. Jim is the ................. in his class. A. clever B. cleverest C. cleverer D. more clever 10. Of the two shirts, this one is ................... A. the prettiest B. the most pretty C. prettier D. the prettier 11. Your house is ................. mine. A. as bigger as B. many times as big as C. much big as D. not many times big 12. Last year it wasn’t as cold as this year. A. This year it is as colder than last year. B. This year it is colder than last year. C. This year it isn’t as cold as last year. D. This year it isn’t colder than last year. 13. She is older than me. A. I’m more younger than her. B. I’m as younger as her. C. I’m more young than her. D. I’m younger than her. 14. The test is not ………………… A. as difficult as it was last month. B. so difficult as it was last month C. more difficult as it was last month. D. Both A & B are correct 15. The Nile River is ………………… of all. A. longer B. the longest C. long D. longest 16................... we read, .................. we know. A. The most/ the most B. The more/ the more C. Most/ most D. More/ more 17. It gets ................... Let’s go swimming. A. hot and hot B. the more hot C. more and more hot D. hotter and hotter 18. Peter usually drives .................. Mary. A. more fast B. more fast than C. more fast D. faster 19. The problem seems to be .................. A. more serious B. more serious than C. more serious as D. more and more serious 20. Peter can not earn .................. his wife. A. as many money as B. as much money as C. as many money than D. as much money than

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