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28 tháng 4

tớ nhắc cậu ( phạm minh tùng ) ko xưng hô vậy nha ✿

18 tháng 12 2022

Chọn B.

28 tháng 10 2021

D.86

28 tháng 10 2021

D

Câu11. Water …………………….at 100°C.       A. boil                     B. boils                    C. boiled                   D. is boilingCâu12. She was not…………be in my class.    A. old enough for       B. enough old           C. old enough to                D. old enoughCâu13.. ………….. is a building in which movies are shown.    A. Movie theater        B....
Đọc tiếp

Câu11. Water …………………….at 100°C.
       A. boil                     B. boils                    C. boiled                   D. is boiling
Câu12. She was not…………be in my class.

    A. old enough for       B. enough old           C. old enough to                D. old enough

Câu13.. ………….. is a building in which movies are shown.
    A. Movie theater        B. University            C. Aquarium           D. Restaurant

Câu14. Alexander Graham Bell was born in ………… .

    A. The USA               B. Scotland              C. Canada                D. America

Câu15. Hoa’s…………watch that movie on TV tonight.

     A. going to                B. go to                    C. be going to          D. is going to

Câu16. Nam has to cook dinner .………… .

          A. herself              B. himself                 C. yourself              D. itself

Câu17. You must …………. all your exercises before going out.

          A. to finish           B. finishing               C.  finished              D. finish

Câu18. Putting a knife into an electrical socket is ………… .

          A. suitable            B. dangerous            C. convenient       D. comfortable

Câu19. My grandma used ………… on a farm.

          A. to live              B. live                       C. lived                  D. living

Câu 20. ………….. is a large piece of furniture where you can hang your clothes.

A. Wardrobe                  B. Refrigerator           C.  Desk               D. Counter

Câu 21. He’s tall and thin. He …………………short black hair.

          A. is                     B. have                 C. had                            D. has

Câu 22. I enjoy telling jokes. My friends usually enjoy my sense of…………..

          A. humorous        B. humor              C. funny                        D. laugh

Câu 23. My sister’s hair is not…………………..

          A. slim                 B. fat                    C. curly                         D. sociable

Câu 24. Yesterday I ……………… to the cinema.

A. go                              B. will go              C. went                          D. has go

Câu 25. Students  ought……………….their lessons before going to school.

          A. prepares          B. prepare            C. prepared                   D. to prepare

Câu 26. We ……………………..in the same class last year.

          A. is                     B. was                  C. are                           D. were

Câu 27.Your school is different …………………his school.

          A. to                        B. with                   C. from                    D. for

Câu 28. I was born in Viet Nam; Vietnamese is my………………..

    A. mother tongue          B. first language     C. foreign language      D. English

Câu 29. The doctor……………………. he should take a few days off.

        A. say                     B. said                  C. asked                     D. tell

 Câu 30.  Airmail is ………………………… expensive than surface mail.

        A. more                     B. the same            C. as                                   D. most                     

           Câu 31. May I …………. you? – Yes. Thank you.

                 A. help                     B. helped            C. to help                     D. helping

Câu 32. We have lived here ………………….. 10 years.

         A. since                    B. at                        C. for                       D. in

Câu 33. Hoa always gets good marks because she studies very…………

          A. hard                B. badly                C. good                       D. slowly

          Câu 34. ………… do they plant and water trees along streets? – On February 7th.

                   A. Where              B. What                C. When                     D. Why

1
11 tháng 1 2022

Câu11. Water …………………….at 100°C.
       A. boil                     B. boils                    C. boiled                   D. is boiling
Câu12. She was not…………be in my class.

    A. old enough for       B. enough old           C. old enough to                D. old enough

Câu13.. ………….. is a building in which movies are shown.
    A. Movie theater        B. University            C. Aquarium           D. Restaurant

Câu14. Alexander Graham Bell was born in ………… .

    A. The USA               B. Scotland              C. Canada                D. America

Câu15. Hoa’s…………watch that movie on TV tonight.

     A. going to                B. go to                    C. be going to          D. is going to

Câu16. Nam has to cook dinner .………… .

          A. herself              B. himself                 C. yourself              D. itself

Câu17. You must …………. all your exercises before going out.

          A. to finish           B. finishing               C.  finished              D. finish

Câu18. Putting a knife into an electrical socket is ………… .

          A. suitable            B. dangerous            C. convenient       D. comfortable

Câu19. My grandma used ………… on a farm.

          A. to live              B. live                       C. lived                  D. living

Câu 20. ………….. is a large piece of furniture where you can hang your clothes.

A. Wardrobe                  B. Refrigerator           C.  Desk               D. Counter

Câu 21. He’s tall and thin. He …………………short black hair.

          A. is                     B. have                 C. had                            D. has

Câu 22. I enjoy telling jokes. My friends usually enjoy my sense of…………..

          A. humorous        B. humor              C. funny                        D. laugh

Câu 23. My sister’s hair is not…………………..

          A. slim                 B. fat                    C. curly                         D. sociable

Câu 24. Yesterday I ……………… to the cinema.

A. go                              B. will go              C. went                          D. has go

Câu 25. Students  ought……………….their lessons before going to school.

          A. prepares          B. prepare            C. prepared                   D. to prepare

Câu 26. We ……………………..in the same class last year.

          A. is                     B. was                  C. are                           D. were

Câu 27.Your school is different …………………his school.

          A. to                        B. with                   C. from                    D. for

Câu 28. I was born in Viet Nam; Vietnamese is my………………..

    A. mother tongue          B. first language     C. foreign language      D. English

Câu 29. The doctor……………………. he should take a few days off.

        A. say                     B. said                  C. asked                     D. tell

 Câu 30.  Airmail is ………………………… expensive than surface mail.

        A. more                     B. the same            C. as                                   D. most                     

           Câu 31. May I …………. you? – Yes. Thank you.

                 A. help                     B. helped            C. to help                     D. helping

Câu 32. We have lived here ………………….. 10 years.

         A. since                    B. at                        C. for                       D. in

Câu 33. Hoa always gets good marks because she studies very…………

          A. hard                B. badly                C. good                       D. slowly

          Câu 34. ………… do they plant and water trees along streets? – On February 7th.

                   A. Where              B. What                C. When                     D. Why

4 tháng 12 2021

11.No river in the world is longer than the Nile River.

No river in the world as long as the Nile River.

12 No one in the team swims more quicky than Linda …….

=>…No one in the team swims as quickly as Linda …………

13. This car is the cheapest car 

=>…No car in the showroom is cheaper than this car

=>=No car in the showroom is as cheap as this car…

14. My mother drives the most dangerously in my family

=>…No one in my family drives more dangerously than my mother………

=>No one in my family drives as dangerously as my mother………

15. No one in my country more carefully than Mai

=> Mai…cleans the room …the most carefully in my country………………………… 

16. No animal of is as big as whale

=>Whale …is the biggest animal……..

4 tháng 12 2021

11. Nile is the longest river in the world

=> No river in the world is longer than Nile.

=>No river in the world as long as the Nile River.

12. Linda swims the most quickly in my team

=>Nobody is swim more quickly than Linda in my team.

=>Nobody isn't swim as quickly as Linda in my team.

13. This car is the cheapest car in the showroom

=> No car is cheaper than this car in the showroom.

=> No car is as cheap as this car in the showroom.

7 tháng 11 2021

Chiều rộng của mảnh đất hình chữ nhật đó là:

        150 × 1/2 = 75 ( m )

Diện tích của mảnh đất hình chữ nhật đó là:

150 × 75 = 11.250( m2 )

Đổi : 11.250 m2 = 1,1250 ha

Đáp số: 11.250 m2

                  1,1250 ha

Câu11:: We must ................... the reality that our handicrafts are competition with those of others villagesA. pass down B. get on with C. deal with D. face up toCâu12:Identify the one underlined words or phrase A, B, C, A that must be changed in order for the sentence to be correctI didn’t like the club because the poor quality of its serviceA. didn’t B. becauseC. quality D. serviceCâu13:Find the word which has CLOSET MEANING with “ stop doing business”A. turn down B. come...
Đọc tiếp

Câu11:: We must ................... the reality that our handicrafts are competition with those of others villages

A. pass down B. get on with C. deal with D. face up to

Câu12:Identify the one underlined words or phrase A, B, C, A that must be changed in order for the sentence to be correct

I didn’t like the club because the poor quality of its service

A. didn’t B. because

C. quality D. service

Câu13:Find the word which has CLOSET MEANING with “ stop doing business”

A. turn down B. come back C. close down D. deal with

Câu14:Adolescence is the period ________ child and young adulthood

A. for B. from C. and D. between

Câu15:Mark the letter A, B, C or D to indicate the correct respond to each of the following exchanges

Peter : “ My life’s got stuck these days. I am so depressed and unable to think of anything”

Mary

A. You will be tired B. Stay calm. Everything will be alright

C. No, thanks D. Stay stuck there

Câu16: These__________are made of thin bamboo strips that are woven together

A. lantern B. drums C. baskets D. conical hats

Câu17: _____ this hand-embroidered picture was expensive, we bought it.

A. Even though B. Because C. As D. so

Câu18: Find the word which has OPPOSITE MEANING withunderlined word in following sentence.

To an American, success is the result of hard work and self - reliance

A. laziness B. enthusiasm C. devotion D. industry

Câu19:Choose the word which has a different position of the main stress

A. intention B. horrible C. refreshment D. exciting

Câu20: Choose the word which has a different position of the main stress

A. candidate B. attendance C. security D. obedient

Choose the best option A, B, C, D to complete the passage from 21 to 28.

Many books, newspapers, airports and air-traffic control, technology, sports, pop music and advertising have the English as the (21) _______ language. In general, theuniversal language on the Internet is the English. The majority of the electronically stored (22) _____ around the world is in English. You can travel to any English speaking country without the need of having a (23) _____ . Usually, if you don’t know the language your trip would be hard and maybe you wouldn’t enjoy it. Nowadays in the competitivejob (24) _____ it is necessary to speak English. So if you learn English you will have a better (25) ______ of getting a job that pays more. English is also helpful if you are going to move to a different country (26) _______ it is a global language. A lot of educational information is in English; therefore, to have (27) _________ to this material or maybecommunicate with other students it is necessary to have knowledge of English. It is necessary to learn English if you are (28) _____ to study at a foreign university or school. Usually many educational institutions will provide you preparatory courses to improve your English language skills but you have to have at least a medium level of knowledge.

Câu 21: A. dominant B. particular C. regional D. foreign

Câu 22:. A. device B. information C. literature D. textbook

Câu 23:. A. specialist B. writer C. businessman D. translator

Câu 24:. A. company B. agency C. market D. workshop

Câu 25:. A. income B. chance C. source D. vision

Câu 26:. A. however B. though C. but D. because

Câu 27:. A. access B. entry C. permit D. guidance

Câu 28:. A. planning B. thinking C. dreaming D. looking

Câu29:Identify the one underlined words or phrase A, B, C, A that must be changed in order for the sentence to be correct

The cost of life in England is higher than in most other parts of Britain

A. life B. higher C. other D. of

Câu30: The city has recently set ……………………. a library in the West Suburn

A. on B. up C. in D. off

Câu31: London is probably most famous for its museums, galleries, palaces and other sights, but it also includes a …………… range of peoples, cultures and religions than any other places.

A. big B. wide C. greater D. wider

Câu32:Do you think cycling tour from Ha Noi to Ho Chi Minh City with some friends is ________?

A. interest B. interestingly C. interesting D. interested

Câu33:I wish I _________ my homework last night

A. did B. had done C. do D. will do

Câu34 : Did I really tell you I was unhappy? I don’t remember _______ that.

A. to say B. saying C. say D. said

Câu35:Ha Noi City now is …………. than it was 10 years ago.

A. much larger B. as large C. more large D. the largest

Câu36: This vase is a beautiful piece of__________It’s made from clay dug from our river banks.

A. conical hat B. potery C. basket D. lacquerware

Câu37: She lives one of the most ……………………..parts of the city : there are a lot of luxury shops here.

A. cosmopolitan B. stressful C. forbidden D. fashionable

Câu38: _____ good teacher must have _____ additional activities prepared for weak students.

A. The/ x B. a/x C. the/a D. the/an

Choose a word whose underline part is pronounced differently from the others.

Câu39 : A. wandered B. embarrassed C.embroidered D. preserved

Câu40 : A.climb B. brain C. lamb D. comb

Read the text and choose the correct answer.

Bill Gates is the co-founder of Microsoft, the world’s largest PC software company. He is among the richest people in the world. Bill Gates’ interest in computers started when he was a teenager. After high school, he was accepted to several top colleges in the USA: Harvard, Yale, and Princeton. He chose to go to Harvard to study law. At Harvard, he focused more on his interest in computer than on coursework. He often relaxed by playing video games in Harvard’s computer lab. He left Harvard before graduating because he wanted to open a software company

with his friend Paul Allen. However, he later said, “ I don’t think dropping out is a good idea.” In 2007, he received an honorary degree from Harvard. He began his speech by saying this to his father in the audience. “I’ve been waiting more than 30 years to say this: Dad, I always told you I’d come back and get my degree.” Bill Gates is no longer working full time for Microsoft. He is now, with his wife, running The Bill & Melinda Gates Foundation which aims to improve healthcare, reduce poverty, and promote education around the world.

Câu 41: When did Bill Gates first develop his interest in computers?

A. when he was at high school

B. when he was at nursery school

C. during his teenage years

D. when he went to university

Câu 42: What did he study at Harvard University?

A. law B. business C. computer science D. medicine

Câu43: What did he often do to relax while at Harvard?

A. play sports D. go shopping

B. go to parties C. play video games

Câu44: Why did he drop out of Harvard?

A. because he was ill

B. because he didn’t have enough money

C. because he wanted to start a software company

D. because he wanted to study at another university

Câu45: What did he receive from Havard in 2007 ?

A. an honorary degree B. a company C. a job D. money

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to the following question.

Câu 46: He read the poem to us. The poem has been translated into several languages.

A. The poem he read has been translated into several languages.

B. The poem which he read to us has been translated into several languages.

C. The poem which he read to us have been translated into several languages.

D. The poem which he reads to us has been translated into several languages.

Câu 47: Although the weather was bad, we went out for a picnic

A. In spite the bad weather, we went out for a picnic.

B. Despite the weather bad, we went out for a picnic.

C. Despite a bad weather, we went out for a picnic.

D. Despite the bad weather, we went out for a picnic.

Câu 48: “We want to send our son to a university in the UK” they said

A. They said they wanted to send their son to a university in the UK.

B. They said they want to send their son to a university in the UK.

C. They said they wanted to send our son to a university in the UK.

D. They said they wanted to send their son a university in the UK.

Câu 49: People expect that the report will suggest some major reforms.

A. It is expected that some major reforms will be suggesting by the report.

B. It was expected that some major reforms will be suggested by the report.

C. It is expected that some major reforms will be suggested by the report.

D. It is expected that some major reforms will be suggest by the report.

Câu 50: I don’t have a laptop to replace this old-fashioned computer.

A. I wish I had a laptop to replace this old-fashion computer.

B. I wish I have a laptop to replace this old-fashion computer.

C. I wish I has a laptop to replace this old-fashion computer.

D. I wish I had this old-fashion computer to replace a laptop.

1
5 tháng 7 2021

Câu11:: We must ................... the reality that our handicrafts are competition with those of others villages

A. pass down B. get on with C. deal with D. face up to

Câu12:Identify the one underlined words or phrase A, B, C, A that must be changed in order for the sentence to be correct

I didn’t like the club because the poor quality of its service

A. didn’t B. because=>because of

C. quality D. service

Câu13:Find the word which has CLOSET MEANING with “ stop doing business”

A. turn down B. come back C. close down D. deal with

Câu14:Adolescence is the period ________ child and young adulthood

A. for B. from C. and D. between

Câu15:Mark the letter A, B, C or D to indicate the correct respond to each of the following exchanges

Peter : “ My life’s got stuck these days. I am so depressed and unable to think of anything”

Mary

A. You will be tired B. Stay calm. Everything will be alright

C. No, thanks D. Stay stuck there

Câu16: These__________are made of thin bamboo strips that are woven together

A. lantern B. drums C. baskets D. conical hats

Câu17: _____ this hand-embroidered picture was expensive, we bought it.

A. Even though B. Because C. As D. so

Câu18: Find the word which has OPPOSITE MEANING withunderlined word in following sentence.

To an American, success is the result of hard work and self - reliance

A. laziness B. enthusiasm C. devotion D. industry

Câu19:Choose the word which has a different position of the main stress

A. intention B. horrible C. refreshment D. exciting

Câu20: Choose the word which has a different position of the main stress

A. candidate B. attendance C. security D. obedient

Choose the best option A, B, C, D to complete the passage from 21 to 28.

Many books, newspapers, airports and air-traffic control, technology, sports, pop music and advertising have the English as the (21) _______ language. In general, theuniversal language on the Internet is the English. The majority of the electronically stored (22) _____ around the world is in English. You can travel to any English speaking country without the need of having a (23) _____ . Usually, if you don’t know the language your trip would be hard and maybe you wouldn’t enjoy it. Nowadays in the competitivejob (24) _____ it is necessary to speak English. So if you learn English you will have a better (25) ______ of getting a job that pays more. English is also helpful if you are going to move to a different country (26) _______ it is a global language. A lot of educational information is in English; therefore, to have (27) _________ to this material or maybecommunicate with other students it is necessary to have knowledge of English. It is necessary to learn English if you are (28) _____ to study at a foreign university or school. Usually many educational institutions will provide you preparatory courses to improve your English language skills but you have to have at least a medium level of knowledge.

Câu 21: A. dominant B. particular C. regional D. foreign

Câu 22:. A. device B. information C. literature D. textbook

Câu 23:. A. specialist B. writer C. businessman D. translator

Câu 24:. A. company B. agency C. market D. workshop

Câu 25:. A. income B. chance C. source D. vision

Câu 26:. A. however B. though C. but D. because

Câu 27:. A. access B. entry C. permit D. guidance

Câu 28:. A. planning B. thinking C. dreaming D. looking

Câu29:Identify the one underlined words or phrase A, B, C, A that must be changed in order for the sentence to be correct

The cost of life in England is higher than in most other parts of Britain

A. life =>living B. higher C. other D. of

Câu30: The city has recently set ……………………. a library in the West Suburn

A. on B. up C. in D. off

Câu31: London is probably most famous for its museums, galleries, palaces and other sights, but it also includes a …………… range of peoples, cultures and religions than any other places.

A. big B. wide C. greater D. wider

Câu32:Do you think cycling tour from Ha Noi to Ho Chi Minh City with some friends is ________?

A. interest B. interestingly C. interesting D. interested

Câu33:I wish I _________ my homework last night

A. did B. had done C. do D. will do

Câu34 : Did I really tell you I was unhappy? I don’t remember _______ that.

A. to say B. saying C. say D. said

Câu35:Ha Noi City now is …………. than it was 10 years ago.

A. much larger B. as large C. more large D. the largest

Câu36: This vase is a beautiful piece of__________It’s made from clay dug from our river banks.

A. conical hat B. pottery C. basket D. lacquerware

Câu37: She lives one of the most ……………………..parts of the city : there are a lot of luxury shops here.

A. cosmopolitan B. stressful C. forbidden D. fashionable

Câu38: _____ good teacher must have _____ additional activities prepared for weak students.

A. The/ x B. a/x C. the/a D. the/an

Choose a word whose underline part is pronounced differently from the others.

Câu39 : A. wandered B. embarrassed C.embroidered D. preserved

Câu40 : A.climb B. brain C. lamb D. comb

Read the text and choose the correct answer.

Bill Gates is the co-founder of Microsoft, the world’s largest PC software company. He is among the richest people in the world. Bill Gates’ interest in computers started when he was a teenager. After high school, he was accepted to several top colleges in the USA: Harvard, Yale, and Princeton. He chose to go to Harvard to study law. At Harvard, he focused more on his interest in computer than on coursework. He often relaxed by playing video games in Harvard’s computer lab. He left Harvard before graduating because he wanted to open a software company

with his friend Paul Allen. However, he later said, “ I don’t think dropping out is a good idea.” In 2007, he received an honorary degree from Harvard. He began his speech by saying this to his father in the audience. “I’ve been waiting more than 30 years to say this: Dad, I always told you I’d come back and get my degree.” Bill Gates is no longer working full time for Microsoft. He is now, with his wife, running The Bill & Melinda Gates Foundation which aims to improve healthcare, reduce poverty, and promote education around the world.

Câu 41: When did Bill Gates first develop his interest in computers?

A. when he was at high school

B. when he was at nursery school

C. during his teenage years

D. when he went to university

Câu 42: What did he study at Harvard University?

A. law B. business C. computer science D. medicine

Câu43: What did he often do to relax while at Harvard?

A. play sports D. go shopping

B. go to parties C. play video games

Câu44: Why did he drop out of Harvard?

A. because he was ill

B. because he didn’t have enough money

C. because he wanted to start a software company

D. because he wanted to study at another university

Câu45: What did he receive from Havard in 2007 ?

A. an honorary degree B. a company C. a job D. money

Mark the letter A, B, C, or D on your answer sheet to indicate th...

31 tháng 12 2021

11 have -> has

12 take -> takes

13 also -> too

14 at -> on

15 the -> bỏ

16 has -> have

31 tháng 12 2021

have to => has to

take=> takes

also=>too

at=>on

Their the => The

has=>have

              XÁC ĐỊNH CHỦ NGỮ, VỊ NGỮ, TRẠNG NGỮ TRONG CÂU11. Chiều chiều, trên triền đê, đám trẻ mục đồng chúng tôi thả diều.12. Tiếng cười nói ồn ã.13. Hoa lá, quả chín, những vạt nấm ẩm ướt và con suối chảy thầm dưới chân đua nhau toả mùi thơm.14. Sau tiếng chuông chùa, mặt trăng đã nhỏ lại, sáng vằng vặc.15. Dưới ánh trăng, dòng sông sáng rực lên, những con sóng...
Đọc tiếp

              XÁC ĐỊNH CHỦ NGỮ, VỊ NGỮ, TRẠNG NGỮ TRONG CÂU

11. Chiều chiều, trên triền đê, đám trẻ mục đồng chúng tôi thả diều.

12. Tiếng cười nói ồn ã.

13. Hoa lá, quả chín, những vạt nấm ẩm ướt và con suối chảy thầm dưới chân đua nhau toả mùi thơm.

14. Sau tiếng chuông chùa, mặt trăng đã nhỏ lại, sáng vằng vặc.

15. Dưới ánh trăng, dòng sông sáng rực lên, những con sóng nhỏ vỗ nhẹ vào hai bờ cát.

16. Ánh trăng trong chảy khắp cành cây kẽ lá, tràn ngập con đường trắng xoá.

17. Cái hình ảnh trong tôi về cô, đến bây giờ, vẫn còn rõ nét.

18. Ngày tháng  đi thật chậm mà cũng thật nhanh.

19. Đứng bên đó, Bé trông thấy con đò, xóm chợ, rặng trâm bầu và cả những nơi ba má Bé đang đánh giặc.

20. Một bác giun bò đụng chân nó mát lạnh hay một chú dế rúc rích cũng khiến nó giật mình, sẵn sàng tụt xuống hố sâu.

 

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Câu 1:Cho (O;3cm), dây cung AC=2cm. Khoảng cách từ O đến dây AC là Nhập kết quả dưới dạng số thập phân tính chính xác đến hàng phần trăm sau dấu phẩy.Câu 5:Đường thẳng xy cắt đường tròn (O;7) tại 2 điểm.Khoảng cách d từ O đến xy thuộc khoảng [a;b). Vậy b = Câu 6:Cho tam giác ABC nhọn có AB = 15cm; BC = 14cm; AC = 13cm. Kẻ đường cao AH. Khi đó CH = cm.Câu 7:Cho hình thang ABCD có , hai đường chéo...
Đọc tiếp

Câu 1:
Cho (O;3cm), dây cung AC=2cm. Khoảng cách từ O đến dây AC là 
Nhập kết quả dưới dạng số thập phân tính chính xác đến hàng phần trăm sau dấu phẩy.
Câu 5:
Đường thẳng xy cắt đường tròn (O;7) tại 2 điểm.
Khoảng cách d từ O đến xy thuộc khoảng [a;b). Vậy b = 
Câu 6:
Cho tam giác ABC nhọn có AB = 15cm; BC = 14cm; AC = 13cm. Kẻ đường cao AH. Khi đó CH = cm.
Câu 7:
Cho hình thang ABCD có , hai đường chéo vuông góc với nhau tại H.
Biết . Khi đó độ dài HC là 
Câu 9:
Cho hình thang ABCD vuông tại A và D, hai đường chéo AC và BD vuông góc nhau.
Biết AB = 18cm và CD = 32cm. Khi đó AD = cm.
Câu 10:
Cho nửa đường tròn tâm O, đường kính AB. Vẽ các tiếp tuyến Ax, By cùng phía với nửa đường tròn.
Gọi M là điểm bất kỳ thuộc nửa đường tròn. Tiếp tuyến tại M cắt Ax, By tại E và F.
Khi đó EOF = độ.
Câu11: tính gia tri biểu thức
A=9−218−−√−−−−−−−−√.9+6(5√−3√).(5√+3√)−−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−−−√
Câu12:
A=sin6α+cos6α+3sin2α.
Câu 13:nghiêm pt
x+2x+3−−−−−√=0 là x=
Câu 14:tập nghiệm pt
23√−7xx2−−−−−−√=0
Câu 15:
tập nghiệm pt 
48x−−−√−75x4−−−√+x3−−√−5x12−−√=12 là x=
Câu 16:tìm GTLN
x−5−−−−√+13−x−−−−−√ với 5$x$13

3
3 tháng 2 2016

Câu1 : 2,83

câu 5: 7

câu 6: 5

câu 7: không đủ đề nên mình ko hiểu

câu 9: 24

câu 10: 90

cho mình nhé

3 tháng 2 2016

Mik chua hoc