2. 外语
  3. The world population today is about 6 billion. But only about 11 percent of the world’s land is suitable for farming. However, t

The world population today is about 6 billion. But only about 11 percent of the world’s land is suitable for farming. However, t

admin2008-11-29  32
问题     The world population today is about 6 billion. But only about 11 percent of the world’s land is suitable for farming. However, the area of farmland is becoming smaller and smaller 【11】 . So it will be difficult to feed so many mouths. There are several reasons why farmland is being  【12】 . First, a lot of the land is being used for the 【13】 of houses. Secondly, some of the land has become wasteland because wind and 【14】 have removed the top soil. Thirdly, some of the land ’has become too salty to 【15】. Therefore, a big problem that we face today is hunger.
  
The world population today is about 6 billion. But only about 11 percent of the world’s land is suitable for farming. However, the area of farmland is becoming smaller and smaller every year. So it will be difficult to feed so many mouths. There are several reasons why farmland is being lost. First, a lot of the land is being used for the building of houses. Secondly, some of the land has become wasteland because wind and rain have removed the top soil. Thirdly, some of the land has become too salty to grow crops.Therefore, a big problem that we face today is hunger.
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答案grow crops
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