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nvanhuu9x
2 năm trước
Tính nhiệt lượng 2.5 kg chì thu vào để tăng nhiệt độ từ 150C lên 1300C
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III. Choose the words or phrases that are not correct in Standard English. 21. If the factory continue dumping poison into the lake, all the fish and other aquatic animals will die. A B C        D 22. The water in the lake has been pollution by the ship. A      B C D 23. Last year I had a wonderful time at a summer camp at Britain. A  B C     D 24. Scotland is famous about its rich culture as well as its amazing natural beauty.                     A                 B    C  D IV. Read the passage and complete the sentences. True (T) or false (F). Air pollution is a serious problem in many cities. Motor vehicles, factories and other sources create so much air pollution that it may hang in the air like dirty fog. Air pollution threatens the health of the people who live in cities. City wastes cause water pollution when they are poured into the waterways. These wastes kill fish and make some areas unfit for swimming. In addition, many large cities have difficulties in disposing of their garbage. The amount of garbage grows each year, but places to put it are quickly filling up. Citizens, governments, industries, scientists, and business people must work together in different ways to gradually reduce pollution. For example, most cities have introduced recycling programmes. 25. Motor vehicles and factories are among some sources of air pollution. A.  True B. fasle 26. Air pollution doesn’t endanger people’s health in some cities. A.  True B. Fasle 27. Air pollution is the only problem of the environment mentioned in this passage. A.  True B. fasle 28. Garbage disposal is a problem in many large cities. A.  True B. fasle 29. Everyone must cooperate to reduce pollution. A.  True B. fasle 30. We can reduce pollution by recycling programmes only. A.  True B. fasle V. Read the passage, and choose the correct answer A, B, C or D for each question.                                         Saving the Environment: One Home at a Time Pollution can be seen not only throughout the world, but also in our own homes. It comes from household chemicals, the amount of water people use and the waste people produce and throw away. What can be done to stop this pollution? Surprisingly, a person can help save the environment by doing simple things. First, we need to recycle, which allows products to be used over and over again. Recycling can also reduce the number of trees cut down to produce paper products. It takes very little effort. It is not hard to place plastic and glass bottles, aluminum cans and paper in a bin. Anyone can do it. Second, we need to watch the amount of water used at home. It can be conserved by taking short showers instead of baths, repairing leaky faucets, using the dishwasher or washing machine only when fully loaded, or simply turning the faucet off while brushing your teeth. Third, we need to reduce waste. We need to recycle whenever possible, but should also try to use this waste effectively. For example, grass clippings and food scraps can be made into compost for plants. The average person produces 4.3 pounds of waste every day, but we can reduce that amount by recycling and reusing. If we do our part in our own homes, we can help keep the planet from becoming more polluted. 31. Pollution is caused from the following sources EXCEPT . A. water in rivers B. water from households C. wastes D. house chemicals 32. Recycling can help us . A. never cut down trees B. produce more paper products C. place garbage bins easily D. use products again and again 33. In order to save water, we can do all of the following things EXCEPT . A. fully use the washing machine B. repair leaky faucets C. take short showers instead of baths D. turn the faucet off while brushing your teeth 34. Recycling helps to reduce waste because . A. plants need to develop B. waste can be recycled and reused C. a person can do it in his home D. an average man produces compost for plants 35. The word “It” in paragraph 2 refers to .     A. cutting down     B. the number C. recycling D. effort VI. Rewrite the following sentence so that it has a similar meaning to the first. 36. Tea is cheaper than coffee. A. Coffee is more expensive than tea./ is not as cheap as tea. B. Coffee is expensiver than tea./ is not more cheap as tea. 37. I adore listening to music every day. A. I enjoy listen to music every day B. I enjoy listening to music every day. 38. No one in my group is more intelligent than Mai. A. Mai is the most intelligent in my group.      B. Mai is the intelligentest in my group 39. I haven't returned my village for 5 years. A. It is 5 years for I returned my village B. It is 5 years since I returned my village. 40. She goes out in the rain. She gets wet. A. If she didn’t go out in the rain, she wouldn’t get wet. B. If she didn’t go out in the rain, she won’t get wet.

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