GRE Reading Comprehension: ETS Official Practice 150-GRE OP150: 阅读 - LXIYM37U8193JX9HZ

The primary purpose of the passage is to A. evaluate the merits of a particular theory in light of new evidence B. discuss scientists' inability to account for certain unexpected discoveries C. point out certain shortcomings in a long-standing theory D. compare several alternative explanations for a particular phenomenon E. consider some implications of certain scientific findings