单选题The skulls and pelvic bones of some species of dinosaur share characteristics with the skulls and pelvic bones of all modern birds. Even though not all dinosaurs have these characteristics, there are scientists who claim that all animals that do have these characteristics are dinosaurs. If the statements above and the claim of the scientists are true, which of the following must also be true?ABirds share more characteristics with dinosaurs than they do with other animals.BSome ancient dinosaurs were indistinguishable from modern birds.CAll animals whose skulls share the characteristics of those of modern birds also have pelvic bones that are similar to those of modern birds.DModern birds are dinosaurs.EAll dinosaurs are birds.
单选题
The skulls and pelvic bones of some species of dinosaur share characteristics with the skulls and pelvic bones of all modern birds. Even though not all dinosaurs have these characteristics, there are scientists who claim that all animals that do have these characteristics are dinosaurs. If the statements above and the claim of the scientists are true, which of the following must also be true?
A
Birds share more characteristics with dinosaurs than they do with other animals.
B
Some ancient dinosaurs were indistinguishable from modern birds.
C
All animals whose skulls share the characteristics of those of modern birds also have pelvic bones that are similar to those of modern birds.
D
Modern birds are dinosaurs.
E
All dinosaurs are birds.
参考解析
解析：
由文段可知，科学家根据一些恐龙的头盖骨和骨盆骨与所有现代鸟类的头盖骨和骨盆骨有许多相同特征，得出结论：所有具有这些特征的动物是恐龙，如果这个推理是正确的话，我们可以认为现代鸟类是恐龙，故本题选D项。
由文段可知，科学家根据一些恐龙的头盖骨和骨盆骨与所有现代鸟类的头盖骨和骨盆骨有许多相同特征，得出结论：所有具有这些特征的动物是恐龙，如果这个推理是正确的话，我们可以认为现代鸟类是恐龙，故本题选D项。
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