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  3. Over the last century, paleontologists have used small differences between fossil specimens to classify Triceratops into sixteen

Over the last century, paleontologists have used small differences between fossil specimens to classify Triceratops into sixteen

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问题 Over the last century, paleontologists have used small differences between fossil specimens to classify Triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time. Which of the following, if true, would enable the conclusion of the argument to be properly drawn?
选项 A、Not every species that lived in a given area is preserved as a fossil.
B、At least one individual of every true species of Triceratops has been discovered as a fossil specimen.
C、No geographical area ever supports more than three similar species at the same time.
D、In many species, individuals display quite marked variation.
E、Differences between fossil specimens of Triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.
答案C
解析 本题貌似归纳，实为支持。如果没有一个地域区域在同一时代会有超过三种相似的种类居住，正如(C)所说，关于Triceratops的11类标本都来自于同一地区同一时代，那么必定样本的区分有误，因此这种划分不正确。所以(C)正确。
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