47. What does “that” in the second paragraph refer to?
(A) Anthropology.
(B) Human origin.
(C) Life expectancy.
(D) The authority.
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統計: A(55), B(93), C(580), D(29), E(0) #717688
統計: A(55), B(93), C(580), D(29), E(0) #717688