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1. Physical anthropology, or biological anthropology as it is also called, concerns the study of human biological or physical characteristics and how they evolved. (剑4, test4 passage 2)

分析:本句的主句为“Physical anthropology, or biological anthropology concerns the study of human biological or physical characteristics and how they evolved”;“as it is also called”定语从句,做biological anthropology的定语,关系词为as;“how they evolved”为how引导的宾语从句,做concern的宾语。