Water conservation knowledge competition i, option 1. Water (h2o) is an inorganic object consisting of two elements, which is transparent liquids with no colour or taste at constant temperature and pressure。
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*a. Hydrogen(h), o (o)√b. Nitrogen(n), h (h)c. Nitrogen(n), o (o)d. Carbon(c), o (o)2. From space, it seems to be a “waterball”. Because 71 per cent of the earth's surface is covered by water, the earth's total water volume is 1,386 million cubic kilometres, 96. 5 per cent of which is distributed among the oceans, with freshwater resources representing only about () per cent of its total water volume。
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*a. 10. 5b. 2. 5 √c. 6. 5d. 0. 53. Water is the mother of all things and the source of life, and world water day is annual ()
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:: a march 22, c. 22 june 22, d. 23 june 4. Garden greening, environmental sanitation, car wash and construction should be prioritized () and ()
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*a. Water running, fresh b. Rainwater, recycled c. Sewage, d. Water running, well water 5. 2022 world water day theme()
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*a. Groundwater, valuing hidden resources b. Valuing water, caring for water c. Water and climate change d. Harnessing the forces of nature to protect green water mountain 6. The per capita per capita water in the world ()
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*a. 1/2b. 1/3c. 1/4 √d. 1/57. Our water-saving logo consists of ()
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*a. Waterdrops, forests, earth b droplets, hands, earth c. Rivers, forests, earth d. Rivers, hands, earth 8. 5 water co-exist, () go first。
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*a. Flooding b. Water-saving c. Water supply
