Viết đoạn văn nói về con trâu và hình ảnh trẻ em ở nông thôn.

khi đặt một hiệu điện thế 12V vào hai đầu một dây dẫn thì dòng điện chạy qua nó có cường độ 6mA. Muốn dòng điện chạy qua dây dẫn có cường độ giảm đi 4mA thì hiệu điện thế lúc này là bao nhiêu?

Câu 2. Hai người đi xe đạp xuất phát cùng một lúc, nhưng từ hai địa điểm M và N cách nhau 50km. Người đi từ M đến N với tốc độ 10km/h, người đi từ N tới M có vận tốc là 15km/h. Hãy tính xem sau bao lâu họ gặp nhau và cách M bao nhiêu?

Mình sẽvote 5* nếu đúng yc Giúp mình trả lời với ạ ( giải chi tiết ) Chỉ có 1 câu phương trình ngắn, đơn giản thôi ạ ,đừng lướt qua mà :<

Thầy giáo có 25 quyển vở thầy cho 6 bạn mỗi bạn 3 quyển.Hỏi thầy giáo còn lại mấy quyển? Giải theo 2 cách . Mn giúp em ạ

11. I didn’t really fancy rock music. _______, they caused me headaches. A. Furthermore B. Thus C. But D. Similarly 12. The sun is shining and there are very few clouds; _______, I am sure it is going to rain. A. what's more B. or C. thus D. nevertheless 13. The country’s crime rate is very low. ________, visitors should still stay alert. A. And B. Neither C. Either D. Nevertheless 14. You must leave at once, ________ you miss the flight. A. however B. yet C. still D. otherwise 15. I was very tired, ________ I determined to walk on to the next village. A. therefore B. however C. and D. or 16. He had to act immediately; ________, it would have been too late. A. nevertheless B. still C. consequently D. otherwise 17. Fast food is very popular. ________, a diet of burgers, pizzas and fried chicken is not very healthy. A. Consequently B. Moreover C. Or else D. In contrast 18. He took too many loans. _______, he went bankrupt. A. Nevertheless B. Otherwise C. Besides D. As a result 19. You should unplug the washing machine before removing its contents; ________ it may hurt your fingers. A. otherwise B. besides C. however D. as well as 20. Graphite is a soft, slippery solid that is a good conductor of _______ heat and electricity. A. as well B. and C. both D. moreover

CÓ GIẢI THÍCH In order to buy his house, he had to obtain a large ________ from his bank A. loan B. finance C. capital D. debt

47. A. kissed B. pleased C. increased D. ceased 48. A. devoted B. suggested C. provided D. wished 49. A. closes B. loses C. loves D. chooses 50. A. gives B. phones C. switches D. dives 51. A. watched B. crashed C. occupied D. coughed 52. A. studies B. flourishes C. finishes D. glances 53. A. hears B. thanks C. blows D. coincides 54. A. started B. looked C. decided D. coincided 55. A. designed B. preserved C. sawed D. guided 56. A. stops B. climbs C. pulls D. television

1. She loves swimming, ________ her parents decide to enrol her in a swimming club. A. and B. but C. or D. so 2. A mistake was made entering the information into the computer. ________, the hotel was overbooked. A. Consequently B. Yet C. Moreover D. Or else 3. You can come here either on Monday__________ on Friday. A. or B. nor C. both D. and 4. He had to leave as soon as possible; ________ she would have left forever. A. consequently B. nevertheless C. still D. otherwise 5. Fred stayed in bed too long and, ________, arrived late for school. A. as a result B. however C. in addition D. on the other hand 6. The weather in Dalat is neither too hot in summer ________ too cold in winter. A. or B. nor C. or else D. otherwise 7. Our business has grown. ________, we have to build larger manufacturers. A. As well B. Thus C. Nor D. But 8. I usually enjoy attending charity events. The event we attended last night, ________, was so disorganized that we really wanted to leave soon. A. therefore B. however C. additionally D. consequently 9. Jane is intelligent and, ________, she's very kind. A. moreover B. however C. as well as D. on the other hand 10. There was thick fog; ______, international flights were delayed until the next day. A. in addition B. however C. therefore D. or

Đốt cháy bột nhôm cần dùng 6,72 lít khí ở đktc, người ta thu được nhôm oxit (Al203). Hãy tính khối lượng nhôm cần dùng và khối lượng Al203 tạo thành.