考博考试

【单选题】 The passage is primarily concerned with ______.
A．drawing an analogy between asymmetry in lobsters and handedness in humans
B．developing a method for predicating whether crusher claws in lobster 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

网考网参考答案：D
网考网解析：
文章围绕龙虾不对称角的形成原因展开讨论，科学家们试图通过试验向人们解释这一现象。 查看试题解析出处>>