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x+3/x-2+x-3/x+2-2x^2+3x+6/x^2-4
Tìm tất cả các giá trị nguyên của x để M nhận giá trị nguyênGiúp mình với nha tks :D
123690760965739347 x 366680462850348364 + 59043767123536
tiêu hóa ở khoang miệng . Biển đổi lí và hóa học
2x2 + 4x -30
\(\frac{\text{x^{^2}-yz}}{\left(x+y\right)\left(y+z\right)}+\frac{y^2-zx}{\left(y+z\right)\left(y+x\right)}+\frac{z^{2-xy}}{\left(z+x\right)\left(z+y\right)}\)/(x+y)(y+z)+y^2-zx/(y+z)(y+x)+
BÀI TẬP VỀ WH- QUESTIONS.Exercises 1: Make questions with the underlined words/phrases1. I received a letter from Lan last week........................................................................................................................................................................2. Minh usually takes exercises after getting up........................................................................................................................................................................3. I brush my teeth twice a day........................................................................................................................................................................4. Nga has an appointment at 10.30 this morning. .....................................................................................................................................................................5. She goes to bed at 9. p. m........................................................................................................................................................................6. I began to study English 6 years ago........................................................................................................................................................................7. They live in the city center........................................................................................................................................................................8. I like ‘Tom and Jerry” because it’s very interesting........................................................................................................................................................................9. Last night I went to disco with my friend. ..............................................................................................................................................................10. She is worried about the next examination........................................................................................................................................................................11. Music makes people different from all other animals........................................................................................................................................................................12. They do their homework at night........................................................................................................................................................................13. Mr. Robertson came to the party alone........................................................................................................................................................................14. I like the red blouse, not the blue one........................................................................................................................................................................15. That is an English book........................................................................................................................................................................16. She talked to him for an hour. .......................................................................................................................................................................17. He studies piano at the university........................................................................................................................................................................18. It’s 063.3921680........................................................................................................................................................................ .......................................................................................................................................................................19. My father is a teacher. ......................................................................................................................................................................20. I’m fine, thanks........................................................................................................................................................................21.My English teacher is very tall and blond........................................................................................................................................................................22.My favorite musician is Trinh Cong Son........................................................................................................................................................................23.The opera was first performed in 1992........................................................................................................................................................................24.Music can help relax and feel rejuvenated........................................................................................................................................................................25.We take a holiday once a year........................................................................................................................................................................26.The concert are usually held at the university........................................................................................................................................................................27.I like classical music........................................................................................................................................................................28.They went to New York........................................................................................................................................................................29.It takes four hours to get there........................................................................................................................................................................30.I didn’t think much of it........................................................................................................................................................................31.He earns a hundred pounds a week........................................................................................................................................................................32.My house is twice as big as yours........................................................................................................................................................................33.They left the country ten years ago........................................................................................................................................................................34.They came by bus........................................................................................................................................................................35.I’ve been here for two years........................................................................................................................................................................36.The students went to the museum yesterday........................................................................................................................................................................37.The car is expensive........................................................................................................................................................................38.He met me in a coffee bar........................................................................................................................................................................39.The neighbors complained about the smell........................................................................................................................................................................40.The clerk made him fill up a form........................................................................................................................................................................41.The pigs ate the apples........................................................................................................................................................................42.He got by climbing over the wall........................................................................................................................................................................43.John bought the tickets........................................................................................................................................................................44.The roads were very crowded........................................................................................................................................................................45.I smoke forty cigarettes a day........................................................................................................................................................................46.I’ve got this job since the beginning of October........................................................................................................................................................................47.I borrowed my brother’s car........................................................................................................................................................................48.I’d like to speak to Mr Jones please........................................................................................................................................................................49.I’m taking French this semester........................................................................................................................................................................50.The river is 450 metre long........................................................................................................................................................................51.This book is 30,000 dong........................................................................................................................................................................52.Her bag weighs 45 kilo........................................................................................................................................................................53.He was 160 centimetre tall when he was in grade 6........................................................................................................................................................................54.The mountain is 3440 metre heigh........................................................................................................................................................................55.I will be seventeen next week........................................................................................................................................................................56.The lake is 45 metre in depth........................................................................................................................................................................Exercises 2: Choose the best answer a, b, c or d?1. Do you know ___ language is spoken in Kenya?a. which b. who c. what d. how2. ___ is your blood type?a. which b. who c. what d. how3. ___ do you play tennis? For exercise.a. which b. who c. what d. how4. ___ can I buy some milk? At the supermarket.a. which b. who c. where d. how5. ___ much do you weigh?a. which b. who c. what d. how6. ___ hat is this? It's my brother's.a. which b. who se c. what d. how7. ___ can I park my car? Over there.a. where b. who c. what d. how8. ___ tall are you?a. which b. who c. what d. how9. ___ do you expect me to do?a. which b. who c. what d. how10. ___ do you like your tea? I like it with cream and sugar.a. which b. who c. what d. how11. ___ picture do you prefer, this one or that one?a. which b. who c. what d. how12. ___ is that woman? - I think she is a teacher.a. which b. who c. when d. how13. ___ book is this? It's mine.a. which b. who c. whose d. how14. ___ do you usually eat lunch? At noon.a. which b. when c. what d. how15. ___ you wash clothes every week?a. which b. who c. what d. how16. ___ does your father work? At City Hall.a. where b. who c. what d. how17. ___ usually gets up the earliest in your family?a. which b. who c. what d. how18. ___ do you think of this hotel? It's pretty good.a. which b. why c. what d. how19. ___ does your father work at that company? Because it's near our house.a. which b. who c. why d. which20. ___ dances the best in your family?a. which b. who c. what d. how
BÀI TẬP TỔNG HỢP VỀ MẠO TỪ “A/AN/THE”Exercise 1: Chọn đáp án đúng để điền vào chỗ trống (chú ý: ký hiệu “x” có nghĩa là không cần mạo từ)1. We are looking for _______ place to spend ________ night. A. the/the B. a/the C. a/a D. the/a2. Please turn off ________ lights when you leave ________ room. A. the/the B. a/a C. the/a D. a/the3. We are looking for people with ________experience. A. the B. a C. an D. x4. Would you pass me ________ salt, please? A. a B. the C. an D. x5. Can you show me ________way to ________station? A. the/the B. a/a C. the/a D. a/the6. She has read ________interesting book. A. a B. an C. the D. x7. You’ll get ________shock if you touch ________ live wire with that screwdriver.A. an/the B. x/the C. a/a D. an/the8. Mr. Smith is ________ old customer and ________ honest man. A. An/the B. the/an C. an/an D. the/the9. ________ youngest boy has just started going to ________ school. A. a/x B. x/the C. an/x D. the/x10. Do you go to ________ prison to visit him? A. the B. a C. x D. an11. ________eldest boy is at ________ college. A. a/the B. the/x C. x/ a D. an/x12. Are you going away next week? No, ________ week after next. A. an B. a C. the D. x13. Would you like to hear ________ story about ________ English scientist? A. an/the B. the/the C. a/the D. a/ an14. There’ll always be a conflict between ________ old and ________ young. A. the/the B. an/a C. an/the D. the/a15. There was ________ collision at ________ corner. A. the/a B. an/the C. a/the D. the/the16. My mother thinks that this is ________ expensive shop. A. the B. an C. a D. x17. Like many women, she loves ________ parties and ________gifts. A. the/ a B. a/the C. a/a D. x/x18. She works seven days ________ week. A. a B. the C. an D. x19. My mother goes to work in ________ morning. A. a B. x C. the D. an20. I am on night duty. When you go to ________ bed, I go to ________ work. A. a/x B. a/the C. the/x D. x/xExercise 2: Câu chuyện sau được chia thành các câu nhỏ, hãy đọc và điền mạo từ thích hợp “a/an/ the hoặc x (không cần mạo từ)” vào chỗ trống:1. There was ________knock on ________door. I opened it and found ________small dark man in ________blue overcoat and _______woolen cap.2. He said he was ________employee of ________gas company and had come to read ________meter.3. But I had ________suspicion that he wasn't speaking ________truth because ________meter readers usually wear ________peaked caps.4. However, I took him to ________ meter, which is in ________dark corner under ________ stairs.5. I asked if he had ________ torch; he said he disliked torches and always read ________ meters by ________light of ________match.6. I remarked that if there was ________leak in ________ gas pipe there might be ________ explosion while he was reading ________meter.7. He said, “As ________matter of ________fact, there was ________explosion in ________last house I visited; and Mr. Smith, ________owner of ________house, was burnt in ________face.”8. “Mr. Smith was holding ________lighted match at ________time of ________explosion.”9. To prevent ________possible repetition of this accident, I lent him ________torch.10. He switched on ________torch, read ________meter and wrote ________ reading down on ________back of ________envelope.11. I said in ________surprise that ________meter readers usually put ________readings down in ________book.12. He said that he had had ________book but that it had been burnt in ________fire in________ Mr. Smith's house.13. By this time I had come to ________conclusion that he wasn't ________genuine meter reader; and ________moment he left ________house I rang ________police.Exercise 3: Điền mạo từ thích hợp “a/an/the hoặc x (không cần mạo từ)”” vào chỗ trống.14. Are John and Mary ________cousins? ~No, they aren't ________cousins; they are ________brother and ________sister.15. ________fog was so thick that we couldn't see ________ side of ________road. We followed ________car in front of us and hoped that we were going ________right way.16. I can't remember ________exact date of ________storm, but I know it was on ________Sunday because everybody was at ________church. On ________Monday ________post didn't come because ________roads were blocked by ________fallentrees.17. Peter thinks that this is quite ________ cheap restaurant.18. A: There's ________murder here. ~B: Where's ________body?~A: There isn't ________body. ~B: Then how do you know there's been ________murder?19. Number ________hundred and two, - ________house next door to us, is for sale.It's quite ________nice house with ________big rooms ________back windows look out on ________park.20. I don't know what ________price ________owners are asking. But Dry and Rot are ________agents. You could give them ________ring and make them ________offer.21. ________postman's little boy says that he'd rather be ________dentist than ________doctor, because ________dentists don't get called out at ________night.22. Just as ________air hostess (there was only one on the plane) was handing me ________cup of ________coffee ________plane gave ________lurch and ________ coffee went all over ________person on ________other side of ________gangway.23. There was ________collision between ________car and ________cyclist at ________ crossroads near ________my house early in ________morning. 24. Professor Jones, ________man who discovered ________new drug that everyone is talking about, refused to give ________press conference.25 Peter Piper, ________student in ________ professor's college, asked him why he refused to talk to ________press.
Câu 1. Viết đoạn văn từ (2 - 3) câu nêu hành động cụ thể của em thể hiện sự trân trọng đối với những người yêu thương mình. (1.0 điểm)
Cho hình vuông ABCD. Lấy E trên BC, F thuộc tia đối DC sao cho BE = DF
a) C/m tam giác ABE = tam giác ADF
b) Gọi G là TĐ của EF. H là điểm đối xứng của A qua G. C/m AEHF là hình vuông
c) C/m tam giác ACH là tam gics vuông
d) Gọi I là trọng tâm của tam giác AEF. C/m khi E,F thay đổi vị trí nhưng vẫn thỏa mãn đề bài thì diện tích tam giác ABD không đổi.