Tiêu đề Đề mẫu (khó hơn mức độ thật).pdf ✅

A. How to reduce garbage disposal B. What people often understand about the term “recycle” C. What is involved in the recycling movement D. How to live sensitively to the environment Question 21. People can do the following to reduce waste EXCEPT: A. buy high-quality product B. buy simply-wrapped things C. reuse cups D. buy fewer hamburgers Question 22. Why is it a waste when customers buy low-quality products? A. Because people will soon throw them away. B. Because they have to be repaired many times. C. Because customers change their ideas all the time. D. Because they produce less energy. Question 23. What best describes the process of reuse? A. The bottles are collected, washed, returned and filled again. B. The bottles are filled again after being returned, collected and washed. C. The bottles are washed, retuned, filled again and collected. D. The bottles are collected, returned filled again and washed. Question 24 What are the two things mentioned as examples of recycling? A. Aluminum cans and plastic wrappings. B. Hamburger wrappings and spent motor oil. C. Aluminum cans and spent motor oil. D. TV sets and aluminum cans. Read the following passage and mark the letter A, B, C, or D to indicate the best option for each of the blanks from 25 to 29. From the seeds themselves to the machinery, fertilizers and pesticides - The Green Revolution regimen depend heavily on technology. One...........(25)........ however, depends much more on technology - organic farming. Many organic farmers use machinery, but...........(26)..........chemical fertilizers or pesticides. ..........(27)..........chemical soil enrichers, they use animal manure and plant parts not used as food - natural, organic fertilizers that are clearly a renewable........(28)........ Organic farmers also use alternatives for pesticides; for example, they may rely........(29)..........natural predators of certain insect pests. Then, the need arises, they can buy the eggs and larvae of these natural predators and introduce them into their crop fields. (Source: https://horticultureandsoilscience.fandom.com/) Question 25. A. alternative B. alternate C. alteration D.alternation Question 26. A. also B. for C. not D. all Question 27. A. In spite of B. On account of C. In favour of D. Instead of Question 28. A. resource B. source C. matter D. substance Question 29. A. of B. to C. on D. in Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions from 30 to 37. An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled - a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of the health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor
might be considered an air pollutant under certain conditions. Many of the more important air pollutants, such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentration of these pollutants was altered by various chemical reactions; they became components in biogeochemical cycles. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil. On a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In such a region, human output may be dominant and may temporarily overload the natural purification scheme of the cycles. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact, the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, has a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm. (source: http://www.ilocis.org) Question 30. What does the passage mainly discuss? A. The economic impact of air pollution. B. What constitutes an air pollutant. C. How much harm air pollutants can cause. D. The effects of compounds added to the atmosphere. Question 31. It can be inferred from the first paragraph that ___________. A. water vapor is an air pollutant in localized areas B. most air pollutants today can be seen or smelled C. the definition of air pollution will continue to change D. a substance becomes an air pollutant only in cities Question 32. For which of the following reasons can natural pollutants play an important role in controlling air pollution? A. They function as part of a purification process. B. They occur in greater quantities than other pollutants. C. They are less harmful to living beings than other pollutants. D. They have existed since the Earth developed. Question 33. According to the passage, human-generated air pollution in localized regions___________. A. can be dwarfed by nature's output of pollutants B. can overwhelm the natural system that removes pollutants C. will damage areas outside of the localized regions D. will react harmfully with natural pollutants Question 34. The word “localized” in the third paragraph is closest in meaning to________. A. specified B. circled C. surrounded D.encircled