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Tranhbanh1108
2 năm trước
cho bieu thuc A= √(1) khang dinh nao sau day la dug phan 6 A A=-1 B A=-1 C A=1 D A=1 phan phan phan phan 6 4 16 4
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Bài 1: Cho góc xOy, có Ot là tia phân giác. Lấy điểm A trên tia Ox, điểm B trên tia Oy sao cho OA=OB. Vẽ đoạn thẳng AB cắt Ot tại M. Chứng minh: a) tam giác OAM = tam giác OBM b) AM = BM; OM vuông góc AB c) OM là đường trung trực của AB d) Trên tia Ot lấy điểm N. Chứng minh NA=NB Bài 2: Cho tam giác ABC vuông tại A, trên tia đối của tia CA lấy điểm K sao cho CK=CA, từ K kẻ KE vuông góc với đường thẳng AC. Chứng minh: a) AB//KE b) góc ABC = góc KEC; BC=CE Bài 3: Cho góc nhọn xOy. Trên tia Ox lấy 2 điểm A, C. Trên tia Oy lấy 2 điểm B, D sao cho OA=OB, AC=BD. a) Chứng minh: AD=BC b) Gọi E là giao điểm AD và BC. Chứng minh: tam giác EAC = tam giác EBD c) Chứng minh: OE là phân giác của góc xOy, OE vuông góc CD Bài 4: Cho tam giác ABC có góc B=90 độ, gọi M là trung điểm của BC. Trên tia đối của tia AM lấy điểm E sao cho ME=MA. a) Tính góc BCE b) Chứng minh BE//AC

cần gấp hứa 5 sao I.Complete these sentences with the question words. 1……………sits next to Frank? Clara. 2. …………. does the boy come from? He's from Newcastle. 3…………… old are her children? They are seven and ten. 4. ………….. is Peter's birthday? In April, I think. 5. ………….. much is the shirt? It's twenty pounds. 6………….. is best at playing tennis? It's Bob. 7. …………. are you going? I'm going to my friends. 8………….. is an orange juice? It's fifty pence. 9. ………… does the restaurant open? It opens at six o' clock. 10………… can I get some ice cream? You can get some at the snack bar. 11. ……….. are you going to order? Fish and chips. 12………… are you going to do on Saturday? I don't know. 13…………has got my pullover? I have got it. 14. ……….. is your name? Carol. 15. ……….. is Susan's party? It's on Friday. II.Choose the best answer: 1.______many students are there in the class? A.How B.What C.Who 2._______has stolen my chocolate? A.Which B.Who C.Whose 3.________is the train station? A.Where B. When C.Which 4.________is the news coming on TV? A.Where B.When C.Who 5.________time does class start? A.What B.When C.How 6._______pen is yours? A.Who B. How C. Which 7._______old is your brother? A. How B. When C. What 8.______didn’t you come to class today? A. Why B. When C. How 9._______much sugar do you take in your coffee? A. Who B. How C. What 10.______is your favorite animal? A. Whose B. What C. How

I. Write the comparative form of the adjective or adverb in brackets. Use than where necessary. 1. They’ve made these chocolate bars smaller. (small) 2. Sport is more interesting than politics. (interesting) 3. We could have found the place........... with a map. (easily) 4. I was feeling tired last night, so I went to bed.......... usual. (early) 5. The weather is getting ............ (bad) 6. Health and happiness are .............money. (important) 7. You need to draw it............. . (carefully) 8. I like living in the country. It’s ...........living in the town. (peaceful) 9. We can’t hear. Could you speak a little .........? (slowly) 10. I can’t stay........... half an hour. (long) 11. A cellphone would be a............... present. (useful) 12. It’s a long way from here to the station .............I thought. (far) 13. Can’t you think of anything............ to say? (intelligent) 14. It was........... usual in town today. (busy) 15. Unfortunately her illness was............. we thought at first. (serious) II. Comment on these situations. Write sentences with a comparative and than. Use these adjectives: big, fast, expensive, long, old, popular, strong, tall, cold, far, had, early, frequently, busy, high. 1. Yesterday the temperature was nine degrees. Today it’s only six degrees. Its colder today than it was yesterday. 2. The journey takes four hours by car and five hours by train. Travelling by car is 3. Chris and Joe both did badly in the exam. Chris got 20% but Joe only got 15%. Joe did 4. I expected my friends to arrive at about 4 o’clock. In fact they arrived at 2:30. My friends 5. The film lasts two and a half hours, but the videotape is only two hours long. The film 6. The cassette is $11,000, and the CD is $18,000. The CD 7. Dave and I went for a run. I ran ten kilometers. Dave stopped after eight kilometers. Iran______________________________________________________________________ 8. The castle was built in 1878 and the church in 1925. The castle 9. Mike is 1.7 meters tall, but Harriet is 1.8 meters. Harriet 10. Andrew hasn’t many friends. Claire has lots of friends. Claire 11. Marie’s car has room for five people, but Sandra’s has room for only four. Marie’s car 12. Sears Tower in Chicago is 442 meters high. Petronas Twin Towers in Kuala Lumpur is 452 meters high. Petronas Twin Towers 13. We were very busy at work today. We’re not usually as busy as that. We 14. You can go by bus or by train. The buses run every 30 minutes. The trains run every hour. The buses 15. Daniel can lift 90 kilos, but Matthew can lift 120 kilos. Matthew

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