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girlvn2018
2 năm trước
1. Một quả dừa có trọng lượng 25N thì có khối lượng bao nhiêu 2.Một xe máy cày có khối lượng 4,1 tấn thì có trọng lượng bao nhiêu 3.Một gói mứt có khối lượng 800 g thì có trọng lượng bao nhiêu 4.Quả cân nặng 1kg thì có trọng lượng là 10N.Suy ra công thức liên hệ giữa trọng lượng và khối lượng là:....... 5.Cấu tạo một lực kế đơn giảnGồm 3 bộ phận chínhlà:................................ 6.
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Read the passage below and decide which option A, B, C or D best fits each space from 19 to 23 The railway system in Viet Nam was first built in 1899, when Viet Nam was still a French colony. The total (19)_____ of the railroad is over 3,000 km, with the main route being the North-South (20)______, which is 1,726 km long. This track was considered the backbone of Indochina at the time. Now, the rail system covers 35 out of the 63 cities and provinces of Viet Nam. However, the system was (21)______ damaged by bombings during the war. In 1975, after the reunification of the north and the south, the Vietnamese government decided to restore the system. In the space of a year, hundreds of bridges, tunnels, and stations were restored, along with 660 km of tracks. The new and improved system was (22)______ the Thong Nhat Express. Thanks to the rail system, travelling from north to south has become much more convenient for tens of thousands of people. In the past, in order to be able to buy train tickets people had to wait in long lines. Now, (23)______ can buy tickets online, or at the central station, without having to wait that long. 19. A. long B. length C. wide D. will 20. A. Railway B. Road C. Route D. Way 21. A. seriously B. importantly C. serious D. very 22. A. recalled B. known C. considered D. renamed 23. A. buyers B. visitors C. passengers D. attendants Read the following passage and choose the best answer (A, B, C or D) for each question Do you ever think about what schools will be like in the future? Many people think that students will study most regular classes such as maths, science and history online. Students will probably learn these subjects anywhere using a computer. What will happen if students have problems with a subject? They might connect with a teacher through live video conferencing. Expert teachers from learning centres will give students help wherever they live. Students will still take classes in a school, too. Schools will become places for learning social skills. Teachers will guide students in learning how to work together in getting along with each other. They will help students with group projects both in and out of the classroom. Volunteer work and working at local businesses will teach students important life skills about the world they live in. This will help students become an important part of their communities. Some experts say it will take five years for changes to begin in schools. Some say it will take longer. Most people agree, though, that computers will change education the way TVs and telephones changed life for people all over the world years before. 24. What will happen if students meet difficulties with a subject? . Teachers from learning centres will give them help through live video conferencing. B. They will meet their teachers in person for help with problems with the subject. C. They will telephone the teachers who are staying at the school to seek their help. D. Schools will organise a live video conference for teachers to help students with problems. 25. Students will still go to school to _____ . A. learn all subjects B. play with their friends C. use computers D. learn social skills 26. The main role of teachers in the future will be _____ . A. providing students with knowledge B. guiding students to learn computers C. helping students with group projects D. organising live video conferences 27. Students will learn important life skills through _______ . A. going to school every day B. taking online classes C. working in international businesses D. doing volunteer work 28. What is the main idea of the passage? A. Kids won’t have to go to school in the future. B. Computers will change education in the future. C. All classes will be taught online in the future. D. Teachers will help students from home in the future. Find a mistake in the four underlined parts of each sentence from 29 to 30 29. The country has significant changed since we came here in 2007. A B C D 30. She has such a good sense of time . She makes everybody laugh . A B C D Mark the letter A,B, C or D on your answer sheet to indicate the correct answer to each of the question from 31 to 32 31. Magaret regretted buying that villa, so she wishes she.................... A. didn't buy B. bought C. had bought D. hadn't bought 32. Noadays poeple no longer smoke........................... A. more than they used to be B. as many as they used to C. as much as they used to D. more than they do now

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