3. It can be inferred from the passage that the Archaeopteryx were classified as birds on the basis of
(A) imprints of bones
(B) imprints of feathers
(C) the neck structure
(D) skeletons
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統計: A(1), B(8), C(1), D(3), E(0) #801976
統計: A(1), B(8), C(1), D(3), E(0) #801976