题目内容

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


  1. A.
    are
  2. B.
    has
  3. C.
    is
  4. D.
    have
C
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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