Là học sinh, em cần làm gì để bảo vệ tài sản của nhà trường?( Nêu 6 việc làm cụ thể)

The first traffic control device appeared near the British House of Parliament at the intersection of George and Bridge Streets. The device was made in response to the desire by a Select Committee to use railway signals on highways. The device had lights and it used arms which extended outwards. It was operated manually by a police officer. The signal was 22 feet high and crowned with a gas light. The light was called semaphore and had arms that would extend horizontally that commanded drivers to "Stop" and then the arms would lower to a 45 degrees angle to tell drivers to proceed with "Caution". At night a red light would command "Stop" and a green light wouldmean use "Caution".The man behind this new and different invention was John Peake Knight a railroad engineer. The main reason for the traffic light was that there was an overflow of horse-drawn traffic over Westminster Bridge which forced thousands of pedestrians to walk next to the house of Parliament. But Knight's invention was not to last long. After only a month of use the device exploded and injured the police officer who was operating the light. In the first two decades of the 20th century semaphore traffic signals, like the one in London, were in use all over the United States with each state having its own design of the device. One good example was from Toledo, Ohio in 1908. The words "Stop" and "Go" were in white on a green background and the lights had red and green lenses illuminated by kerosene lamps for night travelers and the arms where eight feet above ground. Controlled by a traffic officer who would blow a whistle before changing the commands on this signal to help alert travelers of the change, the design was also used in Philadelphia and Detroit. The example in Ohio was the first time America tried to use a more visible form of traffic control that evolved the use of semaphore. The device that was used in Ohio was designed based on the use of railroad signals. 1. What was the main purpose of making the first traffic control device? …………………………………………………………………………………………………………… 2. What was the light operated manually by a police officer called? ……………………………………………………………………………………………………………… 3. Why wasn't John Peake Knight's invention to last long? ………………………………………………………………………………………………………… 4. How tall were the arms of the traffic lights used in Ohio in 1908? ……………………………………………………………………………………………………………… 5. The Westminster Bridge is in . ………………………………………………………………………………

ADVERBS Circle the adjective or the adverb to complete each sentence.l Example: My friend is a _____ driver. [ careful / carefully ] 1. My classmate is a _____ person. [ nice / nicely ] 2. I can speak Spanish very _____. [ good / well ] 3. Katrina took a painting class, so she can paint _____ pictures. [ beautiful / beautifully ] 4. Mr. Smith looked _____ at me when I arrived late. [ angry / angrily ] 5. Of course, I was _____ when I got an A+ on the exam. [ happy / happily ] 6. The music is too _____. Please turn it down! [ loud / loudly ] 7. My friends all tell me that I sing _____. [ bad / badly ] 8. The thief _____ took the money and walked out the door. [ quiet / quietly ] 9. The cat waited _____ for the mouse to come out of the hole. [ silent / silently ] 10. My cousin always walks very _____. [ quick / quickly ] 11. The work that my boss gave me was _____. [ easy / easily ] 12. Thomas is very _____. He always helps me. [ kind / kindly ] 13. The little boy _____ kept the cookie for himself. [ selfish / selfishly ] 14. The man _____ opened the door and looked inside. [ nervous / nervously ] 15. The fireman _____ rescued the people from the burning house. [ brave / bravely ] 16. I _____ offered to help my friend study for his exam. [ happy / happily ] 17. She is the most _____ person I know. [ polite / politely ] 18. It was midnight, and I heard a _____ noise outside. [ strange / strangely ]

Complete these sentences using :and,but,so,because. 1.She want to go to the cinema,.............. I don't like that film. 2.Mai play tennis............football. 3.I can't sleep,.............. I am going to drink a glass of hot milk. 4.She went to the disco,............ She didn't dance. 5.I study English.......... I want to talk with foreigners. 6.She didn't invite me,............ I didn't go to her birthday party. 7.She daned............ sang last night. 8.He is sad.............. he saw an accident. 9.She didn't invited me,.............. I didn't go to her birthday party. 10.She can draw well,............... she can cook.

Một hình thang có đáy lớn 120dm, đáy bé bằng 1/3 đáy lớn, chiều cao bằng trung bình cộng của hai đáy. tính diện tích hình thang đó.

Diện tích toàn phần của hình lập phương thứ nhất là 54 cm ² , diện tích toàn phần của hình lập phương thứ hai là 216 cm ² . Hỏi cạnh của hình lập phương thứ hai dài gấp mấy lần cạnh của hình lập phương thứ nhất ? Bài này là bài giải nha mọi người , xin mọi người giúp mình.

Rewrite the sentences so that their meaning stays the same, do as directed in the parentheses 47. We should clean our teeth twice a day. (turn into passive voice)  __________________________________________ 48. Because Lan woke up late, she didn’t have time for breakfast. ( using so )  __________________________________________ 49. Although they were the better team, they lost the match yesterday. ( using but)  __________________________________________ 50. Perhaps Alex plays football with Pingping in the yard. (using might)  __________________________________________

Tìm nghiệm của phương trình: a, |x-1|=2 và (x+1)(x-3)=0 b, x+5=0 và (x+5)(x^2+1)=0

Đề 1 :Đọc văn bản sau và trả lời các câu hỏi: Than ôi! Người ta vẫn nói: "Cứng quá thì gãy". Kẻ sĩ chỉ lo không cứng cỏi được, còn gãy hay không là việc của trời. Sao lại đoán trước là sẽ gãy mà chịu đổi cứng ra mềm ? Ngô Tử Văn là một anh chàng áo vải. Vì cứng cỏi cho nên dám đốt cháy đền tà, chống lại yêu ma, làm một việc hơn cả thần và người. Bởi thế được nổi tiếng và được giữ chức vị ở Minh ti, thật là xứng đáng. Vậy kẻ sĩ, không nên kiêng sợ sự cứng cỏi. ( Trích Chuyện Chức Phán sự đền Tản Viên, SGK Ngữ văn 10,Trang 60,Tập II, NXBGD 2006) 1/ Nêu nội dung chính của văn bản ? 2/ Câu văn nào trong văn bản có ý bác bỏ quan niệm đổi cứng ra mềm của những kẻ sĩ cơ hội, cầu an? Cách bác bỏ thuyết phục người đọc dựa trên cơ sở nào? 3/ Qua văn bản, nhà văn Nguyễn Dữ tỏ thái độ, tình cảm như thế nào với nhân vật Ngô Tử Văn? 4/ Ngày nay, kiểu nhân vật như Tử Văn có cần thiết cho đời sống chúng ta không ? Vì sao ?

12 x 5 x 6 40 x 3 x 5 25 x 6 x 10