2. 职称英语
  3. The world population today is about 6 billion. But only about 1 percent of t

The world population today is about 6 billion. But only about 1 percent of t

游客2023-09-21  33
问题     The world population today is about 6 billion. But only about 1 percent of the world’s land is【T1】______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【T2】______First, a lot of the land is being used for the【T3】______of houses. Secondly, some of the land has become wasteland because【T4】______have removed the top soil. Thirdly, some of the land has become too salty to【T5】______. Therefore, a big problem that we face today is hunger. [br] 【T4】
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答案 wind and rain
解析 空格前的because引导原因状语从句，空格后为谓语，由此可以推断需要填入名词性成分作从句的主语。结合录音，此处填入wind and rain。
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