问题
问答题 简答题
耕整地机械的功用。
答案
参考答案：
（1）解，以恢复土壤肥力；
（2）能将地面的杂草、残根、农药、肥料或土壤改良剂和病茵虫卵等翻入下层，以消灭杂草，减少病虫害，增加土壤的有机质，恢复和提高土壤的肥力，利于作物生长；
（3）松碎土壤，增加孔隙度，改善透气性，利于作物根系的生长发育。
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耕整地机械的功用。
参考答案：
（1）解，以恢复土壤肥力；
（2）能将地面的杂草、残根、农药、肥料或土壤改良剂和病茵虫卵等翻入下层，以消灭杂草，减少病虫害，增加土壤的有机质，恢复和提高土壤的肥力，利于作物生长；
（3）松碎土壤，增加孔隙度，改善透气性，利于作物根系的生长发育。
James’s New Bicycle James shook his money box again. Nothing! He carefully __36__ the coins that lay on the bed. $24.52 was all that he had. The bicycle he wanted was at least $90! __37__ on earth was he going to get the __38__ of the money? He knew that his friends all had bicycles. It was __39__ to hang around with people when you were the only one without wheels. He thought about what he could do. There was no __40__ asking his parents, for he knew they had no money to __41__. There was only one way to get the money, and that was to __42__ it. He would have to find a job. __43__ who would hire him and what could he do? He decided to ask Mr. Clay for advice, who usually had __44__ on most things. “Well, you can start right here,” said Mr. Clay. “My windows need cleaning and my car needs washing.” That was the __45__ of James’s odd-job business. For three months he worked every day after finishing his homework. He was amazed by the __46__ of jobs that people found for him to do. He took dogs and babies for walks, cleared out cupboards, and mended books. He lost count of the __47__ of cars he washed and windows he cleaned, but the __48__ increased and he knew that he would soon have __49__ for the bicycle he longed for. The day __50__ came when James counted his money and found $94.32. He __51__ no time and went down to the shop to pick up the bicycle he wanted. He rode __52__ home, looking forward to showing his new bicycle to his friends. It had been hard __53__ for the money, but James knew that he valued his bicycle far more __54__ he had bought it with his own money. He had __55__ what he thought was impossible, and that was worth even than the bicycle.
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