All the participants were European descendants.A、正确B、错误A原文说:They also noted th

游客2023-12-28  21

问题 All the participants were European descendants.

选项 A、正确
B、错误

答案 A

解析 原文说:They also noted that the study only involved people whose ancestors were European.也就是说,所有研究对象都是欧洲人的后裔,因此,是正确的。
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