2. 外语
  3. Artificial snow is used in agriculture as a type of______for plants in cold conditions.

Artificial snow is used in agriculture as a type of______for plants in cold conditions.

admin2014-12-30  58
问题 Artificial snow is used in agriculture as a type of______for plants in cold conditions.
选项
答案insulation
解析 ... farmers often use man-made snow to provide insulation for winter crops...
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