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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1195

The wide spread of super hybrid rice around the world ______ the lives of millions and millions of people suffering from hunger to a great level.

A.has improved B.is improving C.improved D.has been improving
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Thewidespreadofsuperhybridrice