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Trộn x (g) H2O vào y (g) dung dịch HCl 30% được dung dịch HCl 12%. Tính tỉ lệ x : y? Áp dụng quy tắc đg chéo đúng khum ạ Em là ra kq là x:y=3:2
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III. Cho dạng so sánh đúng của tính từ trong ngoặc. 1. This house is.....................than that one. (old) 2. Vietnamese are...................than English (difficult) 3. My father has...........................money than my mother (much) 4. This building is the.................of the all of building in the city(tall) 5. Lan is .........................than Mai (intelligent) 6. Hung is the.......................student in our class (good) 7. My dad drinks .........................beer than your dad (little) 9. Summer is the ......................... .season in the year (hot) 10. She has .................homework than me( a little) IV. Complete these sentences by using comparative .( DẠNG SO SÁNH HƠN) 1. A new house is........................................than an old one (expensive) 2. Motorbikes are..........................................than bike (fast) 3. My television is............................................than his TV (modern) 4. Summer is.................. ... than spring (hot) 5. Jane is............................................than her sister (beautiful) 6. Skirts are......................... than dresses (cheap) 7. Her English is................ ........than my English (good). 8. A bike is often......................................than a car in busy cities (convenient) 9. Orange juice is..........................than coffee (good) 10. Cars are...........................................than motorbikes (expensive) 11. Airplane is the .......................................... means of transport (fast) 12. The blue dress is ............................................than the red one (cheap) 13. Watching TV is...............................................than reading books (interesting) 14. Hung doesn't work hard. I work (hard)..............................than him. 15. The county is ...........................................than the city.(quiet) 16. The population of Tokyo is ..........................than that of London (big) 17. This wall is ............................than that wall (thick) 18. The Math book is....................................than history book (thick) 19. London is...............................................than New York (safe) 20. Is the Underground in London............................than the Metro in Paris (good) V.. Complete these sentences by using superlative.( SO SÁNH NHẤT) 1. Nile River is the................................. river in the world (long) 2. This book is the ...................................... of three books (interesting). 3. Ho Chi Minh City is the .............................................. city in Viet Nam (big) 4. They are the.........................................students in my class (good) 5. These houses are the ....................... ...................... in the village (beautiful) 6. Winter is the ........................................ season in the year (cold) 7. He is the ..........................person in the meeting (important) 8. Hanh is the........................................ student in the class (clever) 9. Mai is the ......................................... girl of the three sisters (beautiful) 10. This apartment is the...................................... for your family (suitable) 11. Mount Everest is the..............................................mountain in the world (high) 12. These toys are the .......................................... in the toy store (expensive) 13. Nam is a good tennis player. I think he is the (good)..................................... in the club. 14. My case isn't very heavy. Your case is (heavy)............................................... 15. Minh's house is the ..........................................to the town center (near) 16. Which is the ..............................................city in your country?(large) 17. Who is the .....................................person in your family? (old) 18. Hambledon is the...............................................village in England (pretty) 19. The town isn't very clean. The country is........................ (clean) 20. Who is the.................................person in the world? (rich) 21. This is the..............................house on the street (small) 22. Today is the ...................................day in my life (busy) 23. Who is the................................student in your class? (young)

Exercise 3: Choose the best answer that best fits meaning the sentence or is the passage sentences of the root one. 12. The teacher should buy the supplies for this class. A. The supplies should buy the teacher for this class B. The supplies should buy this class for the teacher C. The supplies should be bought for this class by the teacher D. The supplies should be bought for the teacher by this class 13. Somebody will call Mr. Watson tonight. A. Mr. Watson will call somebody tonight. B. Mr. Watson will be call tonight. C. Mr. Watson tonight will call somebody. D. Mr. Watson will be called tonight. 14. The fire has caused a considerable damage. A. A considerable damage been has caused the fire. B. A considerable damage has caused the fire. C. A considerable damage has been caused by the fire. D. A considerable damage has caused by the fire. 15. John will have received the papers by tomorrow. A. The papers will have been received by tomorrow by John. B. The papers will have received John by tomorrow. C. The papers will have been received John by tomorrow. D. The papers will have received tomorrow by John. 16. They haven’t decided anything yet. A. Nothing has been decided yet. B. Anything haven’t been decided yet. C. Nothing has decided yet. D. Anything have decided yet. 17. Your hair is long. You ought to get it cut. A. Your long hair needs cutting. B. You ought to have your long hair cut. C. Your long hair should be cut. D. All are correct. 18. The medical profession borrowed the technology from the other fields. A. The technology borrowed the medical profession from the other fields. B. The technology was borrowed from the other fields by the medical profession. C. The technology were borrowed from the other fields the medical profession. D. The technology from the other fields borrowed by the medical profession. 19. The surgeons arranged for the installation of a TV screen in the operating theatre. A. The installation of a TV screen in the operating theatre arranged the surgeons. B. The installation of a TV screen in the operating theatre arranged by the surgeons. C. The installation of a TV screen in the operating theatre were arranged by the surgeons. D. The installation of a TV screen in the operating theatre was arranged by the surgeons. 20. They first drew up emergency plans, later abandoned to build new cities. A. Emergency plans was first drown up and later abandoned to build new cities. B. Emergency plans were first drown up and later abandoned to build new cities. C. Emergency plans are first drown up and later abandoned to build new cities. D. Emergency plans is first drown up and later abandoned to build new cities.

A communication breakdown between two people from different countries may happen due to _____________ differences Marrie William Marrie William | Chat Online Thứ 3, ngày 30/03/2021 22:09:30 Tiếng Anh - Lớp 8 | Tiếng Anh | Lớp 8 494 lượt xem TrướcSau 2. A communication breakdown between two people from different countries may happen due to _____________ differences. (CULTURE) 3. When a policeman directs traffic, he often uses his arms to tell drivers where to go and when to stop. This is _____________ communication. (VERBAL) 4. Using telepathy is a way to communicate instantly by thoughts and feelings, without the need to use speech or _____________. (WRITE) 5. Students need the _____________ to communicate with people within their team. (ABLE) 6. Could you tell that person was angry just by looking at his or her _____________expression? (FACE) 7. This lesson will focus on _____________ communication skills. (EFFECT) 8. The technology can be used to produce _____________ educational programs. (INTERACT) 9. In free time, Nga often communicates _____________ with her cats. (NON - VERBAL) 10. Nowadays, many young people are using _____________ media such as Facebook, Twitter, Zalo. (SOCIETY) 11. The _____________ are very concerned about the increasing number of wildfire in this year. (ENVIRONMENT) 12. Examples of primary _____________ are exhaust fumes from cars, soot from smoke and ash from volcanic eruption. (POLLUTE) 13. Although the earthquake last only some seconds, but its _____________ really terrified all the local people. (OCCUR) 14. Niagara Falls, on the border of the USA and Canada, is one of the most _____________ sceneries in the world. (SPECTACLE) 15. Different kinds of environmental pollution in recent years have destroyed many _____________ habitats. (NATURE) 16. The birth of emails has made the_____________ among people much easier than before. (CORRESPOND) 17. The Internet is _____________ again. It is so annoying! (CONNECT) 18. Snail mails seem less _____________than emails. (ADVANTAGE) 19. Being_____________ to watching TV or videos may leads to many health problems among teenagers. (ADDICT) 20. The Telegraph was one of the most well-known _____________in the 20th. (INVENT)

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