GRE Reading Comprehension: ETS-GRE阅读ETS - V81413AEA4JLW34H7

The passage is primarily concerned with A. drawing an analogy between asymmetry in lobsters and handedness in humans B. developing a method for predicting whether crusher claws in lobsters will appear on the left or right side C. explaining differences between lobsters' crusher claws and cutter claws D. discussing a possible explanation for the way bilateral asymmetry is determined in lobsters E. summarizing the stages of development of the lobster