Hãy trình bày phương án xác định ( gần đúng ) khối lượng riêng của 1 vật nhỏ bằng kim loại. Dụng cụ đo gồm: vật cần xác định khối lượng riêng, lực kế ca đựng nước có thể nhúng chìm hoàn toàn vật, một số sợi dây nhỏ mềm có thể bỏ qua khối lượng riêng. Coi rằng khối lượng riêng của vật là D1 và của nước là D2

Có bạn nào giải đề bài cuối ko????

cho tam giác ABC có AB=4, BC=6, AC=5. Phân giác BD a)Tính AD, DC b)Vẽ AM // BC(M thuộc BD). Tính AM? c) Trên tia đối của tia BC lấy N sao cho BN=BC. Vẽ BE vuông góc với BD(E thuộc AN). Tính tí số AE/NE

Choose the underlined words or phrases that are not correct in standard written English. 25. She asked me if had I a driving licence. ​ A B C D 26. He met many friends which encouraged him in his work. ​A​B​C​D 27. My friend, Tam was injured in a car accident but he didn’t drive carefully. A B C D 28. I think we should taking a shower instead of a bath to save energy. ​ A​B​ C​ D Rewrite the sentences to make them have the same meaning as the original one 29. Hoa said to me, “Where will you spend your holiday?” Hoa________________________________________________________ 30. He got bad marks because he didn’t study hard. He didn’t__________________________________________________ 31. It’s a pity. I don’t live near my school. I wish_______________________________________________________ 32. Her mother has washed the clothes for two hours. The clothes__________________________________________________ Rearrange the word or phrase in the right order to have meaningful sentences. 33. is disappointed that/ have spoiled/ Mr. Brown/ this area/ people _________________________________________________________________ 34. by the river/ lies near / His village/ of the mountain and/ the foot / _________________________________________________________________

Mk ko biết làm bài này các bạn giúp mình với mk hứa vote 5 saonha

chứng minh rằng đoạn 3 của bài thơ có thể coi là một bức tranh tứ bình lộng lẫy

lm giúp bài nào cũng đc mk sắp thi rồi nhé!!!

I.Choose the word whose underlined part is pronounced differently from that of the others in each group. 1) A.peaceful , B.pleasure , C.sleepy , D.cheap 2) A.blossom , B.chess , C.messy , D.passion 3)A.clothes , B.fireworks , C.scissors , D.mountains 4)A.stadium , B.place , C.paddy , D.lake 5)A.lunch , B.music , C.unpopular , D.study II.Fill in each blank with ONE appropriate word. 1.Minh's father is a farmer.He works on the............................ 2.Mary and I would like to........................................English speaking club. 3.Lan can't reach the book on the shelf....................................she is short. III.Complete the second sentence so that it means the same as the first one. 1.She goes to work at eight forty-five. =>She goes to work at fifteen................................................. 2.It's against the rules to use your mobile phone in class. =>You.......................................................................................... 3.We have a two-month summer vacation. =>Our summer vacation lasts..............................................................

1. When I/ a child, I/ used/ go/ the local park every Saturday afternoon. ……………………………………………………………………………………………… 2. It/ not/ necessary/ bring skis as they/ included/ the package. …………………………………………………………………………………………… 3. The students/ believed/ be educated/ England. ……………………………………………………………………………………………… 4. I wish that I / have time/ read lots/ books. ……………………………………………………………………………………………… 5. By the time James/ get up this morning, there / be/ no sandwiches left. ……………………………………………………………………………………………… 6. My Dad/ suggest/ I/ learn/ Spanish. ……………………………………………………………………………………………… 7. We/ relieved/the rain/ finally/ stop. ……………………………………………………………………………………………… 8. He/ suggest/ travel/ together/ safety, since the area/ so dangerous. ……………………………………………………………………………………………… 9. The farmers/ my home village/ not/ use/ transport rice home/ trucks. They/ use/ buffalo- driven carts. ……………………………………………………………………………………………… 10. He/ wish/ he/ will have one more billion dollars. ………………………………………………………………………………………………

Read the following passage and answer the questions More than 80% of American high school students work at part-time jobs in the evenings, on weekends or in summer. These part-time jobs bring teenagers great advantages. One of the benefits of the work is the students can learn the skills that will be useful for the rest of their lives. When they work, they have to manage both the job and schoolwork. To be able to do so, they must be very organized and able to keep a sensible schedule. They also learn to cope with the job stress apart from the stress of the schoolwork. Some of the most stressful jobs include teaching, nursing, and police work. These skills help prepare teenagers for their later careers. High school students who work are more likely to succeed as adults than people who enter the job market at a later age with no work experience. Teenagers want a lot of expensive things: clothes, mp3 players, trips with their friends, etc. Not all parents can afford them. And even if they can, the teens might not really appreciate that money because they did not earn it. When teenagers make money for themselves, they know its true and are less likely to spend it foolishly. 21. Which of the following is a good title for the passage? A. Why teenagers should work B. Advantages and disadvantages of part-time jobs C. Part-time jobs cause stress D. Part –time jobs can be useless 22. According to the passage, what is NOT an effect of part-time jobs? A. Teenagers become organized. B. Teenagers become stressed. C. Teenagers are more likely to have successful careers. D.Teenagers can make money for themselves 23. The word “cope with” in the passage is closest in meaning to ______. A. fight against B. deal with C. suffer from D.take care of 24. According to the passage, which of the following is TRUE? A. Only some US students do part-time jobs. B. US students suffer part-time job stress. C. Part-time jobs are somehow good for teenagers. D.Most US students don’t like part-time jobs.