Scientists got the result by examining blood from the dog owners and their dogs.

游客2025-01-25 3

问题 Scientists got the result by examining blood from the dog owners and their dogs.

选项 A、正确
B、错误

答案 B

解析原文说：The scientists examined hair from the dog owners and their dogs．也就是说，科学家是通过主人和狗的毛发(而不是血液)进行研究的，因此，是错误的。

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