我们黑龙江是“鱼米之乡”是产粮大省，2011上粮食总产量居全国首位，特别是优质的水稻更是享誉中外，请根据要求回答下列问题：
（1）用水稻磨成的大米为人类提供的营养元素主要是______，其作用是______；
（2）若水稻在生长过程中出现了倒伏现象，可能的原因是缺少了______服所至，请写出一种具体的化肥______．（填化学式）
（1）大米中含有丰富的淀粉，淀粉属于糖类，糖类能够为机体活动和维持恒定体温提供能量．
故填：糖类；为机体活动和维持恒定体温提供能量．
（2）水稻在生长过程中出现了倒伏现象，说明水稻中缺乏钾元素，应该施加钾肥，硫酸钾中含有钾元素，属于钾肥，化学式是K2SO4．
故填：钾肥；K2SO4．
| 阅读理解。 |
| A Story About Confucius (孔子) One day Confucius, with his disciples (门徒), went to the Jin State to give lectures. When passing by a city, they were stopped by a seven-year-old boy. "Better make a detour (绕道走) by passing round the city," said the boy. "Young boy, let us pass," Confucius got off his carriage and said. "I'm going to the Jin State to give lectures. Let us pass by, please!" begged Confucius. "You're going to give lectures? A teacher should be rich in knowledge. What do you know?" "I know a little about astronomy (天文) and geography," answered Confucius, with one hand stroking his beard (捋胡子). "Really?" the boy laughed." Do you know the number of hair that makes up your beard?" "I can't see my own beard. How can I count it?" "Then the stars in the sky can be seen. Do you know how many stars there are in the sky?" added the boy. "There are innumerable (无数的) stars in the sky that I can't count them," said Confucius in embarrassment (窘迫地). "But there is only one sun in the sky. Do you know how far it is from us?" Confucius could say nothing. "My wisdom and learning are so little. I really don't know the things you asked. I'm willing to take you as my teacher." With these words, Confucius bowed to the boy. From then on, Confucius often told his disciples, "Among any three people, there must be one who can be my teacher." |
| 1. Confucius was a well-known _______. |
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| A. educationist (教育家) of the Spring and Autumn Period B. scientist of the Spring and Autumn Period C. educationist of the Tang Dynasty (唐朝) D. educationist of the Zhou Dynasty |
| 2. Confucius went to the Jin State to _______ with his disciples. |
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| A. count stars B. count beard C. his disciples D. tell astronomy and geography |
| 3. Confucius took _______ as his teacher. |
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| A. three people B. a seven-year-old boy C. his disciples D. the King of Jin State |
| 4. From the story we can see _______. |
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| A. Confucius was very impolite B. Confucius' learning was little C. Confucius was very proud D. Confucius was very modest (谦虚的) |
| 5. What's the Chinese for the sentence "among any three people, there must be one who can be my teacher"? |
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| A. 三个人都是我师 B. 三个人中只有一个是我师 C. 三人行必有我师 D. 三个人都不是我师 |