1 cái cây mọc thẳng. Sau cơn mưa, cây bị đổ ngang thân. Điểm gãy cách gốc 3m, ngọn cây chạm đất cách gốc 4m. Hỏi cây cao bn mét?

Các câu hỏi liên quan

A) Use the correct tense: 1. He ……………………………… (not / live) in Đstanbul if he ………………… (hate) it. 2. If you …………………………… (write) the letters, I ……………………… (post) them. 3. If you …………………………… (not / leave) immediately, I ………………………. (call) the police. 4. If he …………………………….. (not / arrive) soon, we ………………………. (have to) have dinner without him. 5. I …………………………………… (not / have to) borrow any money from you if I …………………………… (get) my salary tomorrow. 6. If you …………………………… (invite) her to the dance, she ………………………(be) very pleased. 7. If you ………………………… (retire) soon, you …………………………….. (make yourself ill. 8. If you ………………………………. (write) him a letter, he ……………………….. (know) our address. 9. If the policeman had seen the thief, he …………………………………………….. (arrest) him. 10. The buildings wouldn’t have burned to ashes if the firemen ………………………………. (come) in time. 11. People wouldn’t cross the Bosphorus, if they ……………………………………………… (not / build) those bridges. 12. If the family had saved enough money, they………………………………………… (buy) a new flat. 13. If I had known that he was sleeping, I ……………………………………………. (not / disturb) him. 14. If I had lost all my money, I …………………………………………... (be) very unhappy. 15. If you had phoned me before you came, you ………………………………………. (find) me at home. B) Complete the following sentences in column A using the correct choice from column B. A B 1. You’ll get tired a) If you can’t have it. 2. If you go to a football match, b) If students make a lot of noise. 3. You can’t hear the teacher c) you must take your umbrella with you. 4. I’ll help you with your lesson, d) If you stand up for a long time. 5. If the soup is too hot, e) If you’re at home tonight. 6. If it rains, f) If you want to study. 7. His family may go on holiday g) you won’t find a seat. 8. A man can’t buy what he needs h) If they save enough money. 9. If you’re on a crowded bus, i) If he doesn’t have enough money. 10. We’ll come to visit you j) I’ll buy a car. 11. If they haven’t seen Topkapý Palace, k) we’d better go there this afternoon. 12. If I get a driving licence, l) I’ll come with you. C) Complete the following sentences: 1. If you write me from England, …………………………………………………………….. 2. She can learn English if ……………………………………………………………………. 3. We can catch the bus if …………………………………………………………………….. 4. If it doesn’t rain this afternoon, ……………………………………………………………. 5. His family will be hungry if ……………………………………………………………….. 6. Your room will become untidy if ………………………………………………………….. 7. A baby cries if ……………………………………………………………………………… 8. If my girlfriend comes early, ………………………………………………………………. 9. If he doesn’t smoke, ……………………………………………………………………….. 10. You can’t sleep well if ……………………………………………………………………..