费费宝典FeiFei-36

Q36  (Why B is correct? What does the question mean?)

Sometimes when their trainer gives the hand signal for "Do something creative together"two dolphins circle a pool in tandem and then leap through the air simulataneously. On the other occasions, the same signal elicits synchronized backward swims or tail-waving. These behaviors are not simply learned responses to a given stimulus. Rather, dolphins are capable of higher cognitive functions that may include the use of language and forethought.

Which one of the following, if true, most strengthens the arguement?

A. Mammals have some resemblance to one another with respect to bodily function and brain structure.

B. The dolphins often exhibit complex new responses to the hand signal.

C. The dolphins are given food incentives as part of their training

D. Some of the behaviors mentioned are exhibited by dolphins in their natural habitat

题目说dolphin有非常高的认知能力，包括语言和思考能力。因为但训练员做出“做点创新的动作”的手势后，dolphin每次会做不同的动作。

B说海豚经常对手势做出复杂的回应，这正加强了文中结论。