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【单选题】
The article does not mention whether the scientists' experiments with dogs have ______.
A.benefited animals other than dogs
B.served man
C.helped other dogs
D.contributed to medical knowledge
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根据网考网移动考试中心的统计,该试题:
84%
的考友选择了A选项
11%
的考友选择了B选项
3%
的考友选择了C选项
2%
的考友选择了D选项
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