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  YuanLongpingisoneofChina’smostfamousscientists,buthec...

  •   YuanLongpingisoneofChina’smostfamousscientists,buthec...

  • 问题详情：  YuanLongpingisoneofChina’smostfamousscientists,buthec  61   himselfafarmer.YuanLongpinggrows   62   iscalledsuperhybridrice.In1973,hebecamethefirstagriculturalpioneerintheworld   63   (grow)rice   64    hasahighou...
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