What is mainly discussed in the passage?How more and more _____________________

游客2023-10-04  24

问题 What is mainly discussed in the passage?
How more and more ____________________________.
[br] Why are small green plants very important to dry places?
They help keep ___________________________ and prevent _____________________.

选项

答案 water in the earth 和the wind from blowing the dirt away

解析 从第三段第五、六句话可知答案。
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