According to the research,____was once considered rare and healthy food is no more than something ordinary.A.that B.what C.all D.which

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According to the research,____was once considered rare and healthy food is no more than something ordinary.A.that B.what C.all D.which
According to the research,____was once considered rare and healthy food is no more than something ordinary.A.that B.what C.all D.which

According to the research,____was once considered rare and healthy food is no more than something ordinary.A.that B.what C.all D.which
是定语从句,选项范围定在A和D,B并不是定语从句的关系代词,C不合语意,all指的是全部,was是单数的代表.因为根据that的用法,故选D~希望能帮上忙~