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Chinese have insufficient water per capita, there is a great waste of water resources, and a large amount of water resources are polluted. Some scientists say that in the 21st century, water will be as important to mankind as oil is to mankind in the 20th century, that it will become a precious commodity that determines a country's wealth, and that how a country treats its water resources will determine whether the country continues to develop or decline. Countries that have made water system governance the most urgent task will be competitive; Countries that fail to do so run the risk of having to divert valuable funds from other sources to clean up their water systems by raising taxes or diverting valuable funds from other sources.
Therefore, we should protect water resources from waste and pollution.
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China is a water-scarce country, with a per capita occupancy of 2,500 cubic meters, which is 1 4 per capita in the world, ranking 110th in the world, and is listed as one of the 13 water-poor countries by the United Nations. At present, more than 400 of the country's 668 cities are short of water, with an annual water shortage of more than 6 billion cubic meters. Due to the influence of the traditional value concept of "water resources are inexhaustible and inexhaustible" for a long time, people's awareness of water conservation is low, resulting in huge waste of water resources and non-sustainable development and utilization of water resources.
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There are two types of water crises: one is drought-type water scarcity, which is mainly concentrated in the north and northwest, and the solution is, of course, water conservation and inter-basin water transfer; The other is water scarcity, which is mainly concentrated in southern China, such as Shanghai. The solution to water management is to manage sewage, which also requires what to do across provinces.
Unified scheduling is required.
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Under the guise of democracy and freedom, Western societies continue to provoke wars in the Middle East and North Africa. The ostensible aim is to promote democracy, but in reality they are expanding their interests in the Middle East.
The democracy promoted by the West is not really world democracy, but democracy in Western ideology, and Western societies wrap their personal purposes under the sugar coating of democracy in order to control the ** line between Middle Eastern oil and Eurasia.
Western democracies are self-deceptive, and the so-called popular elections are nothing more than their high-sounding excuses, from the United States to Western Europe, to Japan and South Korea in East Asia. It is really disgusting that these countries hide hereditary politics under democracy!
Democracy in the West is unequal and biased, the so-called democracy is only an excuse for them to deceive the people of the capitalist countries, for whom there is no other form of democracy.
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Choose A. Oasis agriculture in Northwest China is mainly distributed in the areas with irrigation conditions from the Hexi Corridor of Gansu Province to Xinjiang, which is determined by two reasons: climate and topography. The climate type of Northwest China is a temperate continental climate, and it is located deep inland, coupled with the relatively closed natural conditions of the terrain, its biggest characteristics are low rainfall and severe drought.
b. The summer precipitation is not right, because even in summer, the precipitation in the above areas is still very small, which is far from meeting the needs of agricultural irrigation; c. The lake water is also wrong, the density of lakes in the arid areas of Northwest China is very low, some are still seasonal lakes, some are saltwater lakes, and they are also far from meeting the needs of agricultural irrigation; d. The expression of river water is incorrect, it is not the ultimate source of water, and the rivers in the northwest are also very scarce, and there are many seasonal rivers; In the Hexi Corridor, the northwest region mainly uses the ice and snow melt water from the Qilian Mountains to irrigate agriculture, and the Xinjiang region mainly uses the ice and snow melt crops from the high-altitude mountains such as the Tianshan Mountains and the Kunlun Mountains to irrigate the water source.
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I chose A. This is mainly because of the topography and climate of northwest China. Oasis agriculture is mainly found in the Tarim Desert in the northwest, where it is dry and rainy.
There will be no abundant rain in the summer, so b excludes; Nor does there exist any large lake, c excluded; The river is a seasonal river, and the downstream of the river is often interrupted, and the water source of the river is mostly meltwater from the high mountains. D isn't all wrong, but A is more appropriate. Therefore, I choose A!
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Choose A. In the non-monsoon area of Northwest China, there is little precipitation, and the rivers are mostly seasonal rivers, with high summer temperatures and more meltwater from alpine ice and snow.
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Of course it's a perennial drought in the northwest, how can there be rain, lakes are even more impossible, if I'm not mistaken, the northwest is also Qinghai there is a Qinghai lake river in the northwest I don't remember any rivers high mountains to be right, such as the Tianshan Mountains and so on.
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aThe climate type of Northwest China is a temperate continental climate, which is characterized by low rainfall and severe drought. So b is impossible, there are no lakes c not chosen, and rivers that break off in the dry season do not choose d
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For example, the climate in Xinjiang is arid and there is a long-term shortage of water, but the local green state agriculture refers to the distribution of crops in places with sufficient irrigation water.
Look at the problem clearly, ask the fundamental question, B is just one of the natural factors, it has always existed, and man-made destruction has accelerated the soil erosion of the Loess Plateau, which is the consequence of economic development, so choose C.
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