trong dãy số dươi đây , số 15/30 là số thư bao nhiêu 1/1,1/2,2/2,1/3,2/3,3/3,1/4,2/4,3/4,4/4,.......

Tính nhanh : 1+ 3+5 + ... + 101 + 103

1. He want to travel all around the.........(global) 2. This law becomes......on 12 May (operate) 3. Employees will generally be more.......if their views are taken seriously (cooperate) 4. My sister speaks Spanish.......(fluency) 5. When speaking to young people, keep it ...........(simplify) 6. He became a private........in civil aviation (operate) 7. The station will be....... again in November (operate) 8. Jill and Sue are at.........with each other about their lodger (vary) 9. Prices have not shown much.......this year (vary) 10. The machine was quite......to use(simplicity) 11. You have missed several .......this term(attend) 12. They had a quite wedding-only a few friends........(attendant) 13. They are discussing about the........effects of pollution (globe) 14. The problem of this area is famie and its .......diseases (attend) 15. Our.....was held throughout his talk(attend) 16. Employees will generally be more....if their views are taken seriously (cooperate) 17. The queen's......are coming in the place(attend) 18. She spoke Chinese with great......(fluent) 19.A good hostess was is always ......to the needs of her guests(attend) 20. Cleaning the lights is.......itself; just wipe it with a damp cloth(simply) 21. The novel.....for learners of intermediate level(simple) 22. They are expecting a large.......at the meeting (attend) 23. ........warming is now a major difficulty that we are facing(globe) 24. The quality of the hotel food is distinctly......(vary) 25. The mother held her children with.......(tender)

Cho tam giác ABC đều có cạnh bằng 4 .a) tính độ dài bán kính của đường tròn ngoại tiếp tam giác ABC .b) tính diện tích của tam giác ABC

Cirle the best option to complete each sentence: 11. He ran _________ than his friend a. fastest b. faster c. fast d. more fast 12. This summer is not as hot _________ last summer a. as b. than c. to d. like 13. “Could you talk _________ ? I’m learning my lessons” a. as quietly b. so quietly c. more quietly d. most quietly 14. It is _________ to talk about a problem than to solve it a. more easier b. easier c. easy d. easiest 15. Jim is five centimeters _________ than Tom a. higher b. taller c. tallest d. tall 16. Winning a place at university _________ for most students a. has become as difficult b. becomes the most difficulty c. is becoming more and more difficult d. will become more difficult 17. The more you study, _________ a. the more knowledge do you gain b. you will gain more knowledge c. the more knowledge you gain d. you are the more knowledgeable 18. The people here are _________ than I expected a. more nice b. most nice c. nicer d. nicest 19. My new boss isn’t as rude _________ my own boss a. as b. so c. than d. that 20. She was _________ friendly person I’ve ever met a. the least b. less c. less and less d. so

RÚT GỌN BIỂU THỨC:B=( 2/√x -3 - √x -5/x-9): √x -1/√x -3

Task 1: Cirle the best option to complete each sentences 1. This is the .............. river in the work a.most long b.longest c.long most d.longer 2.Do you think older people drive ................... than younger people? a.slow b.slower c.more slow d.more slowly 3.They are dance well, but John dances ............ a.better b.more good c.the better d.the best 5. My car isn’t very new. Your car is _____ than my car a. newer b. older c. not new d. less new 6. Who is _____ in your class? a. the interlligentest b. the most intelligent c. more intelligent d . the more intelligent 7. His mother is older than she _____ a. likes b. looks like c. looks d. is like 8. The winter is coming, it is getting _________ a. more cold b. the more cold c. colder and colder d . the most cold 9. Praja returned home as _________ as he could a. quick b. quicker c. quickest d. quickly 10. This is _________ elephant I have ever seen a. the biggest b. most big c. the most big d. bigger

Catching fish by electricity is.............to small fish. A. Harmed. B. Harm. C. Unharmed D. Harmful.

Xét tính Đồng biến, Nghịch biến của hàm số: y=cosx + (1\2)×cos2x Thank.😍😍😍😍

Ông Khôi sở hữu một mảnh đất hình chữ nhật có chu vi là 100m. Ông ta định bán mảnh đất với giá thị trường là 15 triệu đồng cho một mét vuông. Hãy xác định giá tiền của mảnh đất đó biết chiều dài gấp 4lần chiều rộng