A: River pollution.
19. Summarize the main contents of paragraph (2) in one sentence.
A: It explains the situation and main reasons of urban river pollution.
20. Please take paragraphs (3) and (4) as examples to briefly analyze what interpretation methods are mainly used in the selection.
Answer: 1. In the third paragraph, taking "19 species of economic fish and 25 species of economic shrimp died continuously in a large area" as an example, it shows that "pollution is a disaster". 2. In the fourth paragraph, the severity of pollution in the urban area of the Yangtze River is explained by numerical method. 3. Paragraph (4) as a comparison method shows that the Yangtze River has a large sediment transport.
2 1. The following sentences are selected from paragraph ⑤ of the essay, and the function of words in the sentences is analyzed to achieve accurate and rigorous explanation of the language.
Since 1970s, water cut-off in the lower reaches of the Yellow River and its estuary occurred almost every year, reaching a record cumulative cut-off of 226 days in 1997. Only Shengli Oilfield lost more than 3 billion yuan due to low crude oil production.
A: "Almost" means very close, and "Almost" means frequent disconnection.
22. Related links: Look carefully at the "Water Saving Signs in China" below and answer questions (1) to (2).
(1) Please discuss the design intention of the icon "China Water Saving Sign".
A: The design intention of the national water-saving sign is that the "national water-saving sign" is formed by water droplets, human hands and the deformation of the earth. The (green) circle represents the earth, symbolizing that saving water is an important measure to protect the earth's ecology. The blank part of the sign is like a hand holding up a drop of water. Hand is the deformation of the pinyin letter JS, which means saving water, indicating that saving water requires public participation, encouraging people to start from me and saving every drop of water; The hand is like a winding river, symbolizing that water drops converge into a river. (only say the general meaning)
(2) "Save our water resources and environment, and don't let the last drop of water seen by human beings be our own tears, which will become a reality." What should you do in the face of severe water resources environment?
Answer: start from me and save every drop of water; Start from my side and don't pollute the water source; Participate in public welfare activities and be a volunteer propagandist. Make your due contribution to saving water resources.