单项选择题

The main attraction of training mature elephants is______.

A．early financial returns
B．their willingness to obey their trainers
C．the avoidance of anxiety in the elephant
D．that elephants are difficult to keep

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单项选择题

This passage mainly discusses______.

A．two techniques used for training elephants
B．the inhumane method used in training elephants
C．how to train the elephant
D．the bad relationship between human beings and elephants