【单选题】

Questions 22-26

Classify the. following groups of people according to whether they believe
A．Supplementation may have a positive effect.
B．Supplementation may have a negative effect.
C．Supplementation has no effect.
Write the correct letter A,B、or C, in boxes 22-26 on your answer sheet.
Food and NutritionBoard of the NationalAcademy of Sciences

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根据网考网移动考试中心的统计，该试题：
13%的考友选择了A选项
11%的考友选择了B选项
61%的考友选择了C选项
15%的考友选择了D选项