user-avatar
Luandz
2 năm trước
Cho biểu thức A = 3/n+ 2 với n là số nguyên a, điều kiện gì Của n để A là phân số. b, Tìm a biết N = 0 ,n = 2, n = 7 c,Tìm n để a là số nguyên.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

IV. Complete the conversation with the words in the box: interested cinema films fantastic relaxed amazing successful section boring awards 1. I am very _______________ in watching TV late on Saturday evenings. 2. His film has won a lot of _______________. 3. All the critics said the film was really ________. Nevertheless, I was so interested that I saw it from beginning to end. 4. Avatar is a big hit – the special effects are __________. 5. If you want to know which films are on the cinemas, you should look at the film______ of this magazine. 6. I feel very ________ when I see romantic comedy. 7. Spiderman 2 has a lot of _________ action scenes. 8. Have you ever been to the _______ lately? 9. What type of _________ do you like, Nick? 10.Kristen Dunst’s most _______ films are the Spiderman films. V. Complete the conversation with the correct form of the adjectives in brackets. 1. A: Was it a good film? B: No, it wasn’t very (interest) _______. In fact, it was very (bore)___ ____. 2. A: I’m always very (tire) _______ after a day at work. I can’t do anything in the evening. B: Why don’t you watch a film? A: I always fall asleep. Sometimes, I put on the most (excite) ______film that I really want to see but I always fall asleep. 3. A: I’m an actor. Acting is a very (tire) ___ job. It isn’t (relax)_____ __ at all. Are you (relax) ____? B: No way. I’m a worker. VI. Complete the sentences with the correct form of the adjectives in brackets. 1. I was very ________ in the lesson because our teacher is very_________ in history. (interest) 2. My friend is a very ________ sort of person but he hates doing_______ activities. (relax) 3. Studying for exams is very _______ I get ______ when I open my school books. (tire) 4. We were all very ______ about the school trip but it wasn’t an ________ trip at all. (excite) 5. It’s a ________ book and I’m _________ every time I start eading it (bore)

QUESTION 4. Give the correct form of the verbs in brackets to complete the following sentences. 1. What ………………you (do) ……………….at the moment? I (watch) …………………TV. 2. We (be) ………………………………………………students in four years. 3. A little girl can't spend all her time (listen) ……………………………… to stories.  4. We (play) …………………soccer this afternoon. Would you like (join) …………………………..? 5. You can borrow my umbrella. I (not/ use) ……………………….. it at the moment. 6. Look! The plane (fly) ………………………………………. towards the airport. 7. Nam (not visit) ………………………. the museum with his class last Sunday because he had a cold.  8. We (have) ……………… a birthday party last week and a lot of people (join)………………………… II. Complete the sentences, using although, despite, in spite of, however, or nevertheless. 1. I think I did OK in my speech last night _____ I’d had almost no sleep for 24 hours. 2. ______ I heard the telephone ring, I didn’t answer it. 3. We enjoyed our holiday_______ the rain. 4. _____ he got top marks at high school, he never went to university. 5. _____ there was no electricity, I was able to read because I had a candle. 6. She failed the test ________ she studied hard. 7. _____ difficulties, the firemen managed to save many people who were caught in the fire. 8. Everyone thought she would accept the offer. _____, she turned it down. 9. Carol arrived at the meeting _____ I asked her not to be there. 10. It looks like they’re going to succeed _____ their present difficulties. 11. _____ it was raining heavily, he went out without a raincoat. 12. My father is very busy. ______ , he is always willing to give a hand with the housework. 13. The sky was grey and cloudy. ________, we went to the beach. 14. Some English words have the same pronunciation _______they are spell differently, for example, dear and deer. 15. I was cold and wet _______ .Bob put on his swimming suit and went to the beach.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team