Ⅰ．Read the passage quickly and complete the following questions．

　　1．Match each part with its main idea．

　　Part 1 (Para．1)　　 　A．Farmers and customers turn to organic farming and how

　　 farmers keep their soil rich．

　　Part 2 (Para．2) B．Scientists have found that chemical fertilizers cause damage

　　 to the land and people's health．

　　Part 3 (Paras．3&4) C．Some of the problems caused by chemical fertilizers．

　　答案：Part 1-B　Part 2-C　Part 3-A

　　2．What does the passage tell us?

　　Since chemical fertilizers have caused damage,_farmers have turned to organic_farming,_ using natural_waste to keep the soil rich．

　　Ⅱ．Read the passage carefully and choose the best answers．

　　1．From the passage, we can see organic farmers are those who ________．

　　A．grow crops with chemical fertilizers

　　B．grow crops with natural fertilizers

　　C．produce organic fertilizers

　　D．care for the environment

　　2．From the fourth paragraph, we know that ________．

　　A．it's not good to plant grass between crops

　　B．peanuts use the ground's surface

　　C．peas and soybeans should be grown together with corn and wheat

　　D．vegetables that put down deep roots are harmful to the soil

　　3．According to the text, which of the following is NOT the problem caused by chemical fertilizers?

　　A．Crop diseases can be stopped．

　　B．Chemicals stay in the ground and underground water for a long time．

　　C．The helpful bacteria and pests are killed as well as the harmful ones．

　　D．Many of these chemicals are dangerous to people's health．

　　答案：1～3　BBA

　　Ⅰ．单词拼写

　　1．The number of people suffering from heart disease will be greatly reduced (减少) if they are persuaded to eat more fruit and vegetables．

　　2．The focus (焦点) of public health is prevention and protection rather than treatment．

　　3．The spokesman refused to comment (评论) on the matter．

　　4．All the mistakes in the exam have been underlined (画底线标出) in red ink．

　　5．Bacteria (细菌) are very small living things, some of which cause illness or disease．

　　6．Good nutrition (营养) is essential if patients are to make a quick recovery．

　　7．It is important for you to skim (浏览) through the text．

Ⅱ．拓展词汇