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  • 科目:英语
  • 题型:选择题
  • 难度:中等
  • 人气:125

﹣Yuan Longping, a famous Chinese scientist, is now doing research on sea rice.

﹣If farmers____ start planting rice in salty water, China's food supply will surely rise.(  )

A.canB.can'tC.mustD.mustn't

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﹣YuanLongping,afamousChinesesc