GRE Reading Comprehension: Maggoosh-GRE阅读Maggoosh - MJ7YK0E4Z57U7QV5M

The primary purpose of the passage is to A. refute an unconventional theory regarding asteroid collisions B. express doubt regarding the validity of evidence offered up by several notable astronomers C. explain how earlier evidence used to describe an aspect of asteroids was misleading D. explore common features of an asteroid in order to provide support for a theory E. discuss how one explanation of an astronomical phenomenon is most likely correct