Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 năm 2023 có đáp án (Đề 4)
7847 lượt thi 97 câu hỏi 60 phút
Text 1:
Read the passage below and choose the best answer to each question.
Few people now question the reality of global warming and its effects on the world's climate. Many scientists (56) ________ the blame for recent natural disasters on the increase (57) ________ the world's temperatures and are convinced that, more than ever before, the Earth is at (58) ________ from the force of the wind, rain and sun. (59) ________ to them, global warming is making extreme weather events; such as hurricanes and droughts, even more (60) ________ and causing sea levels all around the world to (61) ________. Environmental groups are putting (62) ________ on governments to take action to reduce the amount of carbon dioxide which is given (63) ________ by factories and power plants, thus attacking the problem at its source. They are in (64) ________ of more money being spent on research into solar, wind and wave energy devices, which could then replace existing power stations. Some scientists, (65) ________, believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow, we would have to wait several hundred years to notice the results. Global warming, it seems, is to stay.
Text 2:
Read the passage below and choose the best answer to each question.
Most human diets contain between 10 and 15 percent of their total calories as protein. The rest of the dietary energy comes from carbohydrates, fats, and in some people, alcohol. The proportion of calories from fats varies from 10 percent in poor communities to 40 percent or more in rich communities.
In addition to providing energy, fats have several other functions in the body. The fat-soluble vitamins, A, D, E, and K, are dissolved in fats, as their name implies. Good sources of these vitamins have high oil or fat content, and the vitamins are stored in the body’s fatty tissues. In the diet, fats cause food to remain longer in the stomach, thus increasing the feeling of fullness for some time after a meal is eaten. Fats add variety, taste, and texture to foods, which accounts for the popularity of fried foods. Fatty deposits in the body have an insulating and protective value. The curves of the human female body are due mostly to strategically located fat deposits.
Whether a certain amount of fat in the diet is essential to human health is not definitely known. When rats are fed a fat-free diet, their growth eventually ceases, their skin becomes inflamed and scaly, and their reproductive systems are damaged. Two fatty acids, linoleic and arachidonic acids, prevent these abnormalities and hence are called essential fatty acids. They also are required by a number of other animals, but their roles in human beings are debatable. Most nutritionists consider linoleic fatty acid an essential nutrient for humans.
Text 3:
Read the text and think of the word which best fits each gap.
Many thousands of children have accidents in their homes. As a (76) ……………….……….. , some children died. The most common accidents are with (77) ……………….……….. and hot water. Small children often touch pots of (78) ……………….……….. water on the stove. The pots fall over and the hot water falls on the children and (79) ……………….……….. them. Some children like to (80) ……………….……….. with fire. They enjoy striking matches or throwing things on a fire to make it burn brightly. If the fire gets too big, it gets out of (81) ……………….………... Then the house (82) ……………….……….. fire. It is very (83) ……………….……….. to play with matches. When a child strikes a (84) ……………….……….., the flame soon burns near his fingers. Then he (85) ……………….……….. the match on the floor. Many houses catch fire in this way.
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