Câu hỏi:
15/06/2023 1,125Read 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.
Sách mới 2k7: 30 đề đánh giá năng lực DHQG Hà Nội, Tp. Hồ Chí Minh, BKHN 2025 mới nhất (600 trang - chỉ từ 160k).
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Trả lời:
Chọn B
Câu hỏi cùng đoạn
Câu 2:
Lời giải của GV VietJack
Chọn B
Câu 3:
Lời giải của GV VietJack
Chọn A
Câu 4:
Lời giải của GV VietJack
Chọn D
Câu 5:
Lời giải của GV VietJack
Chọn C
Câu 6:
Lời giải của GV VietJack
Chọn B
Câu 7:
Lời giải của GV VietJack
Chọn C
Câu 8:
Lời giải của GV VietJack
Chọn A
Câu 9:
Lời giải của GV VietJack
Chọn C
Câu 10:
Lời giải của GV VietJack
Chọn A
Đã bán 152
Đã bán 114
Đã bán 132
Đã bán 47
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the word that differs from the rest in the position of the main stress in each of the following questions.
Câu 2:
Câu 3:
Câu 4:
Câu 5:
Câu 6:
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