bài 1 : cho tam giác ABC vuông tại A . Tia phân giác của góc ABC cắt AC ở D ,E là điểm trên cạnh BC sao cho BE= BA a, chứng minh rằng ΔABD= ΔEBD b, chứng minh rằng DE vuông góc với BC c, gọi F là giao điểm cưa ED VÀ BA , chứng minh rằng DC=DF - bài 2 : cho Δ ABC cân tại A . Trên cạnh AB lấy điểm D , trên cạnh AC lấy điểm E sao cho AD = AE a, chứng minh rằng ΔABE= ΔACD b, chứng minh rằng BE = CD , ABE=ACD C, GỌI K là giao điểm của BE và CD , tam giác KBC LÀ tam giác gì ? vì sao ?

viết thu cho nguoi bạn nuoc ngoài để gioi thiệu về ngày tết nguyên đán cổ truyền việt nam

Giải giúp mình nha Cảm ơn rất nhiều

I. Choose the best answer A, B, C or D to complete the sentences. 1. My sister likes going to the cinema …….. I like watching TV at home. A. and B. but C. because D. or 2. It doesn’t rain, so I have to ………. the flowers in my garden every day. A. water B. watering C. watered D. waters 3. I first ……… Ho Chi Minh City in 2013. A. go B. went C. visited D. been to 4. I ……… Tom and Jerry many times. A. see B. saw C. am seeing D. have seen 5. It’s often ……… in the winter. A. hot B. cool C. cold D. warm 6. Thuy is thirsty. She likes some ……….. A. bread B. rice C. vegetables D. orange juice 7. ………. many apples do you want to buy? A. Which B. Who C. What D. How 8. Sailing a ……… is very exciting. A. ball B. bicycle C. boat D. racket 9. Neil Armstrong ………… the first man on the Moon. A. was B. were C. is D. are 10. He is the ……….. famous singer in the town. A. much B. many C. more D. most II. Supply the correct tense or form of the verbs in parentheses: 1. He (eat) ………….. a lot of meat yesterday morning. 2. My mother (give) …………… me a new bike next week. 3. He ( often not go) …………….to the movies on Sunday evenings 4. Mr Minh (go) …………… to London next week if he gets a cheap flight ticket. 5. You must (walk) …………… through this street to get to the post office. PART C: READING I. Read the following passage and put a word in the box in each of the number blanks: pay cheap important television comfortably Television now plays such an……. (1)……….role in so many people’s life. First of all, …..(2)…….is not only a convenient source of entertainment, but also a rather …… (3)……one. For a family of four, for example, it is more convenient as well as cheaper to sit……. (4)………at home than to go out. They don’t have to …..(5)……for expensive seats at the theatre or in the cinema. 1…………… 2……………… 3……………… 4…………… 5…………… II. Choose the correct word A, B, C or D for each gap to complete the following passage I don’t usually eat breakfast. I only have …….. (1)…… of coffee. I don’t eat…. (2)…… until about 11 o’clock. Then I have a biscuit and a glass of…. (3)……. For lunch I usually have a salad. That’s…… (4)……about two o’clock. I have…… (5)…….at 6:30 p.m. 1. A. a packet B. a cup C. a can D. a bar 2. A. any B. some C .anything D. something 3. A .peas B. rice C. chocolate D. milk 4. A. at B. on C. in D. of 5. A .breakfast B. lunch C .dinner D. supper III. Read the following passage and do the tasks below: Mr John is a teacher. He teaches in a small school in London. In the morning, he gets up at seven o’clock. He has breakfast and drinks a glass of milk. Then he goes to work. He teaches his pupils French. He has lunch at school. He goes home at one o’clock in the afternoon. He doesn’t work on Saturdays and Sundays, he goes to the cinema or reads stories. He likes books very much. He has a sister in Oxford and a brother in London. A. True (T) or False (F): Statement T F 1. Mr John is a teacher. 2. He often gets up at nine o’clock every morning. B. Answer the questions: 1. Where does Mr John teach? =>…………………………………………………………………………. 2. What time does he go home in the afternoon? =>…………………………………………………………………………. 3. Does he work on Saturdays and Sundays? =>…………………………………………………………………………. PART D: WRITING I. Rearrange the sentences using the following words: 1. than / more colourful / is much / this park. / My garden / =>………………………………………………………………………….. 2. have / picture / She / doesn’t / a / living room. / her / in / =>………………………………………………………………………….. 3. My brother’s / sport / volleyball. / is / favourite/ =>………………………………………………………………………….. 4. smaller / is / Russia. / Germany / than / =>………………………………………………………………………….. 5. are / What / going / you / to / Sunday morning? / do / on / =>………………………………………………………………………….. II. Complete the second sentence so that it means the same as the sentence before: 1. We began eating when it started to rain => We have ……………………………………………………………… 2. My house is behind the supermarket. => The supermarket ……………………………………………………... 3. Let’s have a picnic in the park on the weekend. => Why …………………………………………………………………..? 4. No one in the class plays better than him. 5. Does your class have forty students? => Are …………………………………………………………………….? III. Make sentences using the words and phrases given: 1. He / do / the housework / at the moment? =>………………………………………………………………………….. 2. How much / a bowl of noodle / cost? =>………………………………………………………………………….. 3. Mrs Nga / go / Lan Chi mart / motorbike. =>………………………………………………………………………….. 4 .Trang / round / face / big eyes. =>………………………………………………………………………….. 5. If / you / not / study hard /, / you / not / pass / final exam. =>…………………………………………………………………………..

EX6. Read the passage and do the tasks below: WHO WANTS TO BE A MILLIONAIRE? One of the most popular quiz programmes on television in the world is called Who Wants To Be A Millionaire?In Britain, the quiz master is Chris Tarrant. He asks the contestants fifteen questions. The first questions are easy but later they are more difficult. If you can answer the fourteenth question, you can win £500,000. You can win a million pounds if you can answer the last question. Of course, the last question is very difficult. All the questions on Who Wants To Be A Millionaire? are multiple-choice questions. After you hear the question, you see four answers. Only one answer is correct. You have to choose the correct answer. If you don’t know the answer to a question, there are three ways you can get help: you can ask the quizmaster to take away two wrong answers: you can ask the studio audience which answer is right; or you can telephone a friend and ask for help. You can only do these things once. Very few people win the million pounds. The first person won a millon pounds one year after the programme started. Today, Who Wants To Be A Millionaire?can be seen in more than 100 countries and is now the world’s most popular quiz programme. a. Find the words in the text with these meanings. 1. A TV programme where people answer questions. ................. 2. The person who ask the questions. ................. 3. The people who try to answer the questions. ................. 4. The people who watch the programme in the studio. ................. b. Answer the questions. 1. Who is the quizmaster in Britain? 4.How many ways can you get help? 2. How many questions do you have to answer? 5. In how many countries can you watch the quiz show? 3. How much do you win for the fourteenth question?

Hình thang đáy lớn 42cm đáy bé 35cm chiều cao bằng trung bình cộng hai đáy tính diện tich hình thang đó

PART 1: TENSES OF VERBS. Exercise 1: Choose the best answer. 1. The wedding party ............ held at the Rex Hotel. A. is B. is being C. will be D. is going to be 2. How many languages ............. John speak? A. do B. does C. did D. will 3. Hurry! The train ...........I don't want to miss it. A. comes B. is coming C. came D. has come 4. Angelina Jolie is a famous actress. She......... in several film. A. appears B. is appearing C. appeared D. has appeared 5. I saw Maggie at the party. She............in several film. A. wears B. wore C. was wearing D. has worn 6. What time.................the next train leave? A. does B. will C. shall D. would 7. Monica..........with her sister at the moment until she finds a flat. A. stays B. is staying C. will stay D. is going to stay 8. After I.........lunch, I looked for my bag. A. had B. had had C. have has D. have had 9. By the end of next year, George.........English for 2 year. A. will have learned B. will learn C. has leaned D. would learn 10. The man got out of the car,............round to the back and opened the boot. A. walking B. walked C. walks D. walk 11. For several years his ambition............to be a pilot. A. is B. has been C. was D. had been 12. Henry.........into the restaurant when the writer was having dinner. A. was going B. went C. has gone D. did go 13. He will take the dog out for a walk as soon as he........dinner. A. finish B. finishes C. will finish D. shall have finished 14. Before you asked, the letter............. A. was written B. had been writtenC. had written D. has been written 15. She............English at RMIT these days. A. studies B. is studying C. will study D. is gong to study 16. She's at her best when she..........big decisions. A. is making B. makes C. had made D. will make next vacation in London. 17. We............next vacation in London. A. spend B. are spending C. will spend D. are going to spend 18. Robert........tomorrow morning on the 10:30 train. A. arrived B. is arriving C. has arrived D. would arrive 19. Look! The bus............ A. left B. has left C. leaves D. is leaving 20. Mike..........one hour ago. A. phoned B. was phoning C. had phoned D. has phoned

Một ô tô đi từ A và dự định đên B lúc 12 giờ trưa. Nếu xe chạy với vận tốc 35 km/h thì sẽ đến B sớm 1 giờ so với dự định. Tính độ dài quãng đường AB và cả thời điểm xuất phát của ô tô tại A?

Một cửa hàng có 2400m vải,trong đó có 63m vải trắng còn lại là vải màu .Hỏi số vải trắng chiếm bao nhiêu phần trăm số vải trong cửa hàng

cho x/2=2y/5=3z/7. tính giá trị của A=2x+5y+3z/7x+y-5z Giúp e với ạ em đang cần gấp . Em cảm ơn