GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - RLYPNA7F7A2ZFNX4J

The passage suggests that one factor that has made it difficult to account for the temperatures once reached by asteroids is A. a miscalculation of the frequency of asteroid collisions B. a misconception about asteroids' density C. a mistaken assumption about what the heat source of the asteroids was D. an underestimation of the rate at which small bodies lose heat E. an erroneous view of how asteroids were formed