問題詳情
40. Why does the author mention "aragonite" in line 26
(A) To explain why fossils are rare
(B) To compare aragonite fossils and calcite fossils
(C) To argue that certain fossils are more informative than others
(D) To illustrate the kinds of inorganic hard parts that can form fossils
(A) To explain why fossils are rare
(B) To compare aragonite fossils and calcite fossils
(C) To argue that certain fossils are more informative than others
(D) To illustrate the kinds of inorganic hard parts that can form fossils
參考答案
答案：D
難度：困難0.333333
統計：A(1),B(0),C(1),D(1),E(0)
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