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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较难
  • 浏览 1921

Research has been limited to ____ production profits, rather than ____ that GM foods are safe.

A.increasing; make sure B.increasing; making sure
C.increase; make sure D.increase; making sure
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Researchhasbeenlimitedtoproduc