tia phản xạ cu?????????
đúng . chùm tia sáng song song đến gương phẳng phản xạ ra chùm sáng song song
( vì ảnh ảo bằng vật )
=> chùm tia sáng song song chiếu đến gương phẳng phản xạ ra chùm sáng song song
chúc bạn học tốt
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Giải thích các bước giải:
uy.TIEALIH TORM 9 1. I find that this magazine is very, INFORM 2. It was an day. ENJOY 3. Thanks to television, people can get the latest The Internet has 4. around the world quickly. INFORM developed and became part of our daily life. INCREASE driving, she caused an accident. CARE 5. Because of his 6. In recent years, there has been many The plane arrived in science. DEVELOP 7. after a violent storm. SAFE air does a lot of harm to our life. POLLUTE 8. 9. 10. I had a good His result was on this film. IMPRESS excellent. AMAZE WORD FORM 10 Wearing casual clothes helps students have freedom of Telephone is one of the greatest Van Cao is one of the most famous 1. . CHOOSE in 19th century. INVENT in Vietnam. MUSIC 2. 3. device to get information. USE I think the Internet is a I sent her a letter last month but I have received no Food and clothing are She can find no 4. from her. RESPOND 5. of life. NECESSARY 6. to her financial troubles. SOLVE to Washington are delayed because of the bad weather. FLY of their house left them no place to live. DESTROY after the summer holidays. HEALTH 7. 8. All 9. The 10. We all looked
Kể lại một trận chiến đấu mà em đã đọc đã xem, đã nghe( trong đó có lời dẫn trực tiếp hoặc gián tiếp) Giúp mình nha, xin bài văn hay.
câu hỏi sinh 6 bài 20 cấu tạo của phần thịt lá có những đặc điểm gì giúp nó thực hiện được chức năng chế tạo chất hữu cơ cho cây
Viết phần thân bài cho bài văn biểu cảm về đôi bàn tay của bác lao công. Xin hãy giúp em, em sắp phải nộp rồi ạ. Dàn ý cũng được
12345 670 45 O do harm to people's health. DIRECT CARE Polluted water can 1. 2. She broke the vase because of her I think English is an Trinh Cong Son is one of the most well-known Many people enjoy the pleasure and It is a He wants to make a good It is my great subject. IMPORTANCE in Vietnam. MUSIC of living downtown. COVENIENT to meet you. PLEASE on everyone he meets. IMPRESS to meet you at this important meeting. PLEASE between the two programs. DIFFER programs at the Festival in Hue. CULTURE 8. There were two There are many 10. WORD FORM 7 has composed a lot of beautiful songs. MUSIC quickly and went for work. DRESS that he often has accidents. CARE That 1. 2. Lucy got 3. He drives so The computer is one of the most marvelous Housework has You must write your He was very The children are playing The children are more in our modern age. INVENT been regarded as women's work. TRADITION form clearly. APPLY of the work he had done. PRIDE 5. 6. 7. on the beach. HAPPY in cartoons. INTEREST morning. SUN 8. 9. 10. We started our trip on a beautiful WORD FORM 8 You have to keep your 1. They are The from that snake. DISTANT greeted by the native. WARM by the little girl was a great hit. PERFORM Some young people today have a very strange You don't have to do that work. In other words, it's Although she is rich, she lives They went to see most of the Air APPEAR for you. NECESSITY . UNHAPPY places. INTEREST makes us unhealthy. POLLUTE They have made careful We all looked for the demonstration. PREPARE after the summer holiday. HEALTH
Cho đường tròn (O;R) đường kính AB . Qua M thuộc đường tròn vẽ tiếp tuyến đường tròn cắt tiếp tuyến tại A và B của đường tròn lần lượt tại C và D a) Cm: AC + BD = CD và GÓC COD = 90° b) Gọi N là giao điểm BC và AD. Cm: MN vuông AB
1. We ……………. . in Kuala Lumpur ten years ago. A. were living B. have lived C. use to live D. lived 2. “I wish you …………………. . longer” Lan said to Maryam at the end of the week. A. could stay B. stay C. will stay D. can stay 3. Last weekend, Nam had an ………… trip to the countryside. A. enjoy B. enjoying C. enjoyable D. enjoyed 4. Did he …………………………live in the country when he was young? A. use to B. used to C. get used to D. be used to 5. Jame wishes his father ………………. here now to help him. A. is B. were C. will be D. would be 6. The Ao dai is the ………… dress of Vietnamese women. A. tradition B. traditional C. traditionally D. trade 7. If you want to improve your English, we ………… help you. A. would B. can C. could D. must 8. Nowadays, it is easy to ………… to the Internet because it is available almost everywhere. A. keep in touch B. take inspiration C. get access D. take part 9. We have lived in this city ………… 1999. A. for B. since C. ago D. in 10. ………… French with native people yet? A. Did you learn B. were you learning C. do you learn D. have you learnt 11. When ………… ? - In 1980 A. is the church built C. did the church build B. was the church built D. has the church been built 12. Viet Nam ………… into three regions : the North, the Center and the South. A. divides B. divided C. is divided D. are divided 13. The report must …………right now.. A. be finished B. is finished C. finish D. be finish 14. Smoking ………… in public. A. should prohibit B. is prohibit C. Prohibits D. should be prohibited
nguồn lao động nước ta có những thuận lợi và khó khăn nào . Lấy ví dụ , dẫn chứng
WORD FORM 4 The gas from the chemical factory was extremely D. E. Huges was the There are a lot of They work hard in order to I hope there won,t be too much The children are more 1. HARM 2. of microphone. INVENT festivals in Vietnam. TRADITION 3. 4. good crops from poor soil. PRODUCT in getting a work permission. DIFFICULT 5. 6. 7. in cartoon. INTERST Many tourists have been attracted by the Designers have She divorced him because of his of Ha Long Bay. BEAUTIFUL 8. the ao dai for ages. MODERN 9. to the children. KIND voice. BEAUTY 10. They love Thanh Lam because of her WORD FORM 5 1. His made him jump out of his seat. EXCITE I like him because he always talks to his parents Many Those boys and girls were Money can't buy Islam is one of the great world He learns very well and his parents are very They hate being If you want to attend the course, you must pass the The weather was fine yesterday. It was 2. POLITE 3. choose to go to this part of the seaside. SWIM 4. by the performance of the clown. FASCINATE HAPPY 5. 6. RELIGIOUS 7. of him. PRIDE 8. on their parents. DEPEND 9. examination. WRITE 10. and sunny. CLOUD
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