TheFAO(FoodandAgricultureOrganizati

发布时间：2020-07-27 00:17:48

The FAO (Food and Agriculture Organization of the United Nations) has worked out that up to 30％ of food ________ lost in storage. A.areB.hasC.isD.have

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C解析百分数作主语，谓语依据其后的名词(food)确定。food为不可数名词，用单数谓语动词。
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