Câu hỏi:
01/08/2023 5,790
Part 2. Questions 66 – 75 (2.0 points - 0.2/ each)
Read the passage below and choose the best answer to each question.
Today we take electricity for granted and perhaps we do not realize just how useful this discovery has been. Steam was the first invention that replaced wind power. It was used to drive engines and was passed through pipes and radiators to warm rooms. Petrol mixed with air was the next invention that provided power. Exploded in a cylinder, it drove a motor engine. Beyond these simple and direct uses, those forms have not much adaptability.
On the other hand, we make use of electricity in thousands of ways. From the powerful voltages that drive our electric trains to the tiny current needed to work a simple calculator, and from the huge electric magnet in steel works that can lift 10 tons to the tiny electric magnet in a doorbell, all are powered by electricity. An electric current can be made with equal ease to heat a huge mass of molten metal in a furnace, or to boil a jug for a cup of coffee.
Other than atomic energy, which has not as yet been harnessed to the full, electricity is the greatest power in the world. It is flexible, and so adaptable for any task for which it is wanted. It travels so easily and with incredible speed along wires and conductors that it can be supplied instantly over vast distances.
To generate electricity, huge turbines or generators must be turned. In Australia they use coal or water to drive this machinery. When dams are built, falling water is used to drive the turbines without polluting the atmosphere with smoke from coal.
Atomic power is used in several countries but there is always the fear of an accident. A tragedy once occurred at Chernobyl, in Ukraine, at an atomic power plant used to make electricity. The reactor leaked, which caused many deaths through radiation.
Now scientists are examining new ways of creating electricity without harmful effects to the environment. They may harness the tides as they flow in and out of bays. Most importantly, they hope to trap sunlight more efficiently. We do not use solar heaters for swimming pools but as yet improvement in the capacity of the solar cells to create more current is necessary. When this happens, electric cars will be viable and the world will rid itself of the toxic gases given off by trucks and cars that burn fossil fuels.
The author mentions the sources of energy such as wind, steam, petrol in the first paragraph to________.
Part 2. Questions 66 – 75 (2.0 points - 0.2/ each)
Read the passage below and choose the best answer to each question.
Today we take electricity for granted and perhaps we do not realize just how useful this discovery has been. Steam was the first invention that replaced wind power. It was used to drive engines and was passed through pipes and radiators to warm rooms. Petrol mixed with air was the next invention that provided power. Exploded in a cylinder, it drove a motor engine. Beyond these simple and direct uses, those forms have not much adaptability.
On the other hand, we make use of electricity in thousands of ways. From the powerful voltages that drive our electric trains to the tiny current needed to work a simple calculator, and from the huge electric magnet in steel works that can lift 10 tons to the tiny electric magnet in a doorbell, all are powered by electricity. An electric current can be made with equal ease to heat a huge mass of molten metal in a furnace, or to boil a jug for a cup of coffee.
Other than atomic energy, which has not as yet been harnessed to the full, electricity is the greatest power in the world. It is flexible, and so adaptable for any task for which it is wanted. It travels so easily and with incredible speed along wires and conductors that it can be supplied instantly over vast distances.
To generate electricity, huge turbines or generators must be turned. In Australia they use coal or water to drive this machinery. When dams are built, falling water is used to drive the turbines without polluting the atmosphere with smoke from coal.
Atomic power is used in several countries but there is always the fear of an accident. A tragedy once occurred at Chernobyl, in Ukraine, at an atomic power plant used to make electricity. The reactor leaked, which caused many deaths through radiation.
Now scientists are examining new ways of creating electricity without harmful effects to the environment. They may harness the tides as they flow in and out of bays. Most importantly, they hope to trap sunlight more efficiently. We do not use solar heaters for swimming pools but as yet improvement in the capacity of the solar cells to create more current is necessary. When this happens, electric cars will be viable and the world will rid itself of the toxic gases given off by trucks and cars that burn fossil fuels.
The author mentions the sources of energy such as wind, steam, petrol in the first paragraph to________.
Câu hỏi trong đề: Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đáp án !!
Quảng cáo
Trả lời:
Giải bởi Vietjack
Chọn đáp án B
Câu hỏi cùng đoạn
Câu 2:
Before electricity, what was sometimes passed through pipes to heat rooms?
Lời giải của GV VietJack
Chọn đáp án C
Câu 3:
What does the author mean by saying that electricity is flexible?
Lời giải của GV VietJack
Chọn đáp án C
Câu 4:
What do we call machines that make electricity?
What do we call machines that make electricity?
Lời giải của GV VietJack
Chọn đáp án C
Câu 5:
The main forms of power used to generate electricity in Australia are ________.
The main forms of power used to generate electricity in Australia are ________.
Lời giải của GV VietJack
Chọn đáp án B
Câu 6:
The word “they” in the last paragraph refers to ________.
The word “they” in the last paragraph refers to ________.
Lời giải của GV VietJack
Chọn đáp án B
Câu 7:
Electric magnets are used in steel works to ________.
Electric magnets are used in steel works to ________.
Lời giải của GV VietJack
Chọn đáp án A
Câu 8:
The advantage of harnessing the power of the tides and of sunlight to generate electricity is that they ________.
Lời giải của GV VietJack
Chọn đáp án A
Câu 9:
Which of the following power sources causes pollution by emitting harmful gases?
Which of the following power sources causes pollution by emitting harmful gases?
Lời giải của GV VietJack
Chọn đáp án B
Câu 10:
The best title for this passage could be ________.
The best title for this passage could be ________.
Lời giải của GV VietJack
Chọn đáp án D
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Lời giải
He couldn’t possibly have taken the money by mistake.
Lời giải
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