viết chương trình nhập vào 1 dãy số, sau đó tính trung bình cộng các phần tử dương trong mảng. pascal

Trên tia Ox lấy hai điểm A và B sao cho OB = 4cm ; OA = 7cm. a)Trong ba điểm O, A, B điểm nào nằm giữa hai điểm còn lại? Vì sao? b)Tính độ dài đoạn thẳng AB. c)Gọi D là trung điểm của đoạn thẳng OB. Tính độ dài đoạn thẳng AD.

Exercise 2: Using the given information, make conditional sentences with IF 1. They are poor, so they can’t help us. → If they ................................................................................................... 2. He doesn’t do his homework. He is always punished. → If he ..................................................................................................... 3. He doesn’t have enough time. He can’t help me. → If he ...................................................................................................... 4. She doesn’t take any exercise, so she is overweight. → If she .................................................................................................... 5. He doesn’t have a bicycle, so he always goes to class late. → He wouldn’t ........................................................................................... 6. I am bad at English, so I can’t do homework. → I could ................................................................................................... 7. He doesn’t practise speaking French, so he doesn’t speak it fluently. → If he ....................................................................................................... 8. The meeting can be cancelled because it snows heavily. → If it ..................................................................................................... 9. We don’t go because it will rain. → If it ........................................................................................................ 10. John is fat because he eats so many chips. → If John ..................................................................................................

1. Hãy vận dụng các biện pháp NT để viết lại đoạn văn thuyết minh sau: "Ở Bình Định, dừa là chủ yếu, dừa là tất cả. Dừa ở đây như rừng, dừa mọc ven sông, ven bờ ruộng, leo sườn đồi, rải theo bờ biển. Trên những chặn đường dài suốt 50,60 km chúng ta chỉ gặp cây dừa: dừa xiêm thấp lè tè, quả tròn, nước ngọt, dừa nếp lơ lửng giữa trời, quả vảng xanh mơn mởn, dừa lửa lá đỏ, vỏ hồng..." 2. Sử dụng yêu tố miêu tả kết hợp với phương pháp thuyết minh để hoàn thành đoạn văn thuyết minh trên cơ sở triển khai câu chủ đề sau: " Cây tre dc sử dụng nhiều trong đời sống sinh hoạt hàng ngày của người VN"

TYPE 2 Exercise 1: Put the verbs in the brackets in the correct tense 20. If you__________ (see) someone drowning, what would you do? 21. I __________ (be) ruined if I bought her everything she asked for. 22. If you slept under a mosquito net, you __________ (not be) bitten so often. 23. I could get a job easily if I __________ (have) a degree. 24. If she__________ (do) her hair differently, she might look quite nice. 25. If we had more rain, our crops __________ (grow) faster. 26. The whole machine would fall to pieces if you __________ (remove) that screw 27. I __________ (keep) a horse if I could afford it. ' 28. I'd go and see him more often if he __________ (live) on a bus route. 29. If they __________ (ban) the sale of alcohol at football matches there might be less violence. 30. I __________ (offer) to help if I thought I'd be any use.

giúp mik bài 2 , 3, và 4 với ạ cảm ơn các bn nhìu

Exercise 1: Put the verbs in the brackets in the correct tense || Type 2 || 1. If I had a typewriter, I __________ (type) it myself. 2. If I __________ (know) his address, I'd give it to you. 3 .He __________ (look) a lot better if he shaved more often. 4. If you __________ (play) for lower stake,s you wouldn't lose so much. 5. If he worked more slowly, he __________ (not make) so many mistakes. 6. I shouldn't drink that wine if I __________ (be) you. 7. More tourists would come to this country if it __________ (have) a better climate. 8. If I were sent to prison, you __________ (visit) me? 9. If someone __________ (give) you a helicopter, what would you do with it? 10. I __________ (buy) shares in that company if I had some money. 11. If he __________ (clean) his windscreen, he'd be able to see where he was going. 12. If you drove your car into the river, you __________ (be) able to get out? 13. If you __________ (not belong) to a union, you couldn't get a job. 14. If I __________ (win) a big prize in a lottery, I'd give up my job. 15. What you __________ (do) if you found a burglar in your house? 16. I could tell you what this means if I __________ (know) Greek. 17. If everybody __________ (give) Ј1, we would have enough. 18. He might get fat if he __________ (stop) smoking. 19. If he knew that it was dangerous, he __________ (not come).

a) cho biết x-y=7. tính A=x(x+2)+y(y-2)-2xy+37 b)cho biết x+2y=5. tính B= x ²+4y ²-2x+10+4xy-4y

Nhận biết sự có mặt của các chất trong hỗn hợp: - Hỗn hợp: CO, CO2, SO3, H2, H2O (Khí-hơi) - Hỗn hợp: Al, CuO, Fe, Cu (rắn) -Hỗn hợp: AlCl3, BaCl2, FeCl2, HCl (dd)

Giúp mẹ với các bạn. Mà đang cần gấp. Cảm ơn trc.