C.Being polluted severely.
D.Being ploughed improperly.
.According to the passage,which of the following statements is WRONG?
A.Perenniation mixes food crops with trees and perennial plants.
B.Poor soil is the main problem in increasing food production.
C.Farmers may be more to blame for the present situation.
D.American researchers first invented perenniation.
.Evergreen agriculture is popular with the farmers mainly because it________.
A.can build the soil and improve the yield
B.can provide more wood as well
C.is the easiest method to carry out
D.is used for a long time
.Why does John Reganold mention Rhoda Mang’yana?
A.To show the method is very popular in Africa.
B.Because she is an expert at farming production.
C.To prove the farming method is effective.
D.Because she produced more grains than anyone else in the country.
语篇解读 在非洲,土地有限、地力贫瘠,如何有效地改善土地状况,提高农作物产量呢?本文介绍了一种能有效提高土地的肥力,促进生产的耕作方式。
.解析: 考查写作意图。由文章第一段及第二段第二句话可知,本文主要针对非洲土地营养成分不足、产量低这一问题,向我们介绍了一种新的农业系统。
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