Với a>0 và b>0 chứng minh √a+b < √a + √b

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III. Choose the best answer. 1. you hear the fireworks from your house last night? A. Can‟t B. Could C. Can D. Will 2. Do you think you write that report by Tuesday? I know you‟re very busy. A. have been able to B. couldn‟t C. will be able to D. could 3. I touch my toes. See! A. can B. will be able to C. could D. can‟t 4. I spend another moment in that restaurant. It was too noisy. A. can‟t B. have been able to C. can D. couldn‟t 5. I never seem to get the temperature right A. can‟t B. to be able to C. can D. could 6. play professionally tennis, you must be extremely fit. A. To be able to B. Couldn‟t C. can D. Will you be able 7. you play an instrument? A. Couldn‟t B. Able to C. Can D. Could 8. I‟m afraid I attend the meeting, I‟m on business in Japan. A. will be able to B. won‟t be able to C. can D. would 9. you have brought it to me at work? A. Couldn‟t B. Could C. Cannot D. Will be able to 10. They save the men from the sinking ship. A. was able to B. could to C. are able D. were able to 11. Robots lift heavy things many years ago. A. can B. could C. couldn‟t D. are able to 12. robots be able to talk to us in the future? A. Can B. Do C. Will D. Could 13. When she is 30, she will be able a famous artist. A. become B. to become C. becomes D. becoming 14. you swim when you were a child? A. Can B. Will C. Could D. Do 15. robots can build space stations on the planets. A. Space B. Doctor C. Workers D. Home 16. Which robot can make coffee? A. Space robot B. Doctor robot C. Worker robot D. Home robot 17. Which robot can help sick people? A. Space robot B. Doctor robot C. Worker robot D. Home robot 18. In the past, robots the laundry. A. could do B. can do C. will do D. do 19. Yesterday, my mother me a robot toy as a birthday gift. A. give B. gave C. giving D. to give 20. He be able to pass the final test because he doesn‟t work hard. A. can B. can‟t C. will D. won‟t

làm hộ mình cái I. Chọn một từ có phần gạch chân được phát âm khác với các từ còn lại. (0,5) Câu 1. A. needed B. wanted C. painted D. played Câu 2. A. coach B. ancient C. cave D. countryside II. Chọn từ khác loại. (0,5 đ) Câu 3. A. king B. princess C. prince D. castle Câu 4. A. mechanic B.architect C. hospital D. writer III. Chọn đáp án đúng nhất để hoàn thành câu. (4,0 đ) Câu 5. My sister _______ like watching cartoons. A. isn’t B. aren’t C. doesn’t D. don’t Câu 6. Last week, we ____________ to Hue City. A. going B.went C.are going D.go Câu 7. They stayed at home______ the weather was bad. A. although B. because C. but D.and Câu 8. What does she often do_______ Christmas? A. in B. at C. on D. of Câu 9. Be quiet! The babies ________ in the room. A. sleeps B. slept C. are sleeping D. sleep Câu 10. He ______ speak two languages five years ago. A. can B. could C. has to D. will Câu 11. Let’s ______ to the zoo now. A. go B. to go C. going D. to going Câu 12. My parents will arrive there __________. A. last weekend B. now C. next Sunday D. today Câu 13. The children are going to ________ on the beach. A. play B. make C. decorate D. build Câu 14._ “ How far is it from here to the nearest bus stop? _ “ _______________________” . A. It take long to get there B. Yes. It is quite far. C. It’s about three kilometers. D. It’s so late. Câu 15. I am writing a letter ______ my friend now. A. on B. to C. in D. of Câu 16. I hope my dream________ come true. A. would B. should C. can B.will Câu 17. My father is ______ engineer and he works in __________ office. A. a/ an B. an/an C. an/a D. a/a Câu 18. How can I get to Nha Trang? – You can________ by plane. A. go B. drive C. take D. walk Câu 19.We’re very _______ now. We don’t want any more food and drink. A. cold B. hot C. full D.hungry Câu 20. Orange juice is very good __________ you. A. To B. at C. on D. for IV. IV. Khoanh tròn vào chữ cái A, B, C hoặc D để chỉ ra một lỗi sai trong mỗi câu dưới đây . (1,0 đ) Câu 21. How much bananas do you eat every day? A B C D Câu 22.Peter often do karate in his free time. A B C D Câu 23. What did the gorillas do when you are at the zoo? A B C D Câu 24. I learn English by speak it every day. A B C D PHẦN TỰ LUẬN ( 4,0 ĐIỂM) V. Cho đúng dạng của động từ trong ngoặc. (0,75 đ) Câu 25. She sometimes ( cook) dinner. Câu 26. They ( not come) yesterday. Câu 27. They (teach )in this school next September ? Câu 25: ____________________ Câu 26: ___________________ Câu 27: ___________________ VI. Đọc đoạn văn và trả lời câu hỏi. My name is Hung. My parents and I are going to the beach in Nha Trang this summer. We are going tostay in a big hotel by the sea for two weeks. I am going to build sandcastles, go sailing, and go fishing. My morther is going to relax by lying on the sand and sunbathing. My father is going to swim in the sea and go on a boat cruise. We are going to eat seafood in the evening. We are going to have a lot of fun there! Câu 28. Where are Hung and his parents going this summer ? …………………………………………………………………………… Câu 29. How long are they going to stay there ? ……………………………………………………………………………. Câu 30. What is Hung going to do there ? …………………………………………………………………………… Câu 31. What is his mother going to do there ? ………………………………………………………………………………. Câu 32. Is his father going to play volleyball ? ………………………………………………………………………….. VII. Hoàn thành các câu sau dựa vào các từ gợi ý. (2,0 đ) Câu 33.He / play / volleyball / friends / moment. ……………………………………………………………………………. Câu 34. brother/ want/ architect/ when/ grow / up. …………………………………………………………………………… Câu 35. It / often/ hot /sunny/ summer/ our country. …………………………………………………………………………. Câu 36. Her brother’s / birthday/ seventh / July. …………………………………………………………………………..