Câu hỏi:
15/06/2023 1,516
Read the following passage and indicate the correct answer to each of the questions.
Ocean water plays an indispensable role in supporting life. The great ocean basins hold about 300 million cubic miles of water. From this vast amount, about 80,000 cubic miles of water are sucked into the atmosphere each year by evaporation and returned by precipitation and drainage to the ocean. More than 24,000 cubic miles of rain descend annually upon the continents. This vast amount is required to replenish the lakes and streams, springs and water tables on which all flora and fauna are dependent. Thus, the hydrosphere permits organic existence.
The hydrosphere has strange characteristics because water has properties unlike those of any other liquid. One anomaly is that water upon freezing expands by about 9 percent, whereas most liquids contract on cooling. For this reason, ice floats on water bodies instead of sinking to the bottom. If the ice sank, the hydrosphere would soon be frozen solidly, except for a thin layer of surface melt water during the summer season. Thus, all aquatic life would be destroyed and the interchange of warm and cold currents, which moderates climate, would be notably absent.
Another outstanding charateristic of water is that water has a heat capacity which is the highest of all liquids and solids except ammonia. This characterisitc enables the oceans to absorb and store vast quantities of heat, thereby often preventing climatic extremes. In addition, water dissolves more substances than any other liquid. It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continents. In several areas of the world these minerals are being commercially exploited. Solar evaporation of salt is widely practised, potash is extracted from the Dead Sea, and magnesium is produced from sea water along the American Gulf Coast.
The author’s main purpose in this passage is to ___________.
Read the following passage and indicate the correct answer to each of the questions.
Ocean water plays an indispensable role in supporting life. The great ocean basins hold about 300 million cubic miles of water. From this vast amount, about 80,000 cubic miles of water are sucked into the atmosphere each year by evaporation and returned by precipitation and drainage to the ocean. More than 24,000 cubic miles of rain descend annually upon the continents. This vast amount is required to replenish the lakes and streams, springs and water tables on which all flora and fauna are dependent. Thus, the hydrosphere permits organic existence.
The hydrosphere has strange characteristics because water has properties unlike those of any other liquid. One anomaly is that water upon freezing expands by about 9 percent, whereas most liquids contract on cooling. For this reason, ice floats on water bodies instead of sinking to the bottom. If the ice sank, the hydrosphere would soon be frozen solidly, except for a thin layer of surface melt water during the summer season. Thus, all aquatic life would be destroyed and the interchange of warm and cold currents, which moderates climate, would be notably absent.
Another outstanding charateristic of water is that water has a heat capacity which is the highest of all liquids and solids except ammonia. This characterisitc enables the oceans to absorb and store vast quantities of heat, thereby often preventing climatic extremes. In addition, water dissolves more substances than any other liquid. It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continents. In several areas of the world these minerals are being commercially exploited. Solar evaporation of salt is widely practised, potash is extracted from the Dead Sea, and magnesium is produced from sea water along the American Gulf Coast.
Đáp án chính xác
Câu hỏi trong đề:
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Trả lời:
Giải bởi Vietjack
Chọn B
Câu hỏi cùng đoạn
Câu 2:
The phrase “this vast amount” in line 4 of paragraph 1 refers to __________ .
Đáp án chính xác
Lời giải của GV VietJack
Chọn B
Câu 3:
The word “replenish” in paragraph 1 can best replaced by ________ .
Đáp án chính xác
Lời giải của GV VietJack
Chọn A
Câu 4:
According to the passage, fish can survive in the oceans because ________ .
Đáp án chính xác
Lời giải của GV VietJack
Chọn D
Câu 5:
Which of the following is NOT mentioned as a characterisitic of water?
Đáp án chính xác
Lời giải của GV VietJack
Chọn C
Câu 6:
The word “outstanding” in paragraph 3 is closest in meaning to ________
Đáp án chính xác
Lời giải của GV VietJack
Chọn B
Câu 7:
According the passage, the hydrosphere is NOT ___________ .
Đáp án chính xác
Lời giải của GV VietJack
Chọn C
Câu 8:
The author’s tone in the passage can best be described as ________ .
Đáp án chính xác
Lời giải của GV VietJack
Chọn A
Câu 9:
The author organizes the passage by _______.
Đáp án chính xác
Lời giải của GV VietJack
Chọn C
Câu 10:
Which of the following statements would be the most likely to begin the paragraph immediately following the passage?
Đáp án chính xác
Lời giải của GV VietJack
Chọn A
Nhà sách VIETJACK:
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