专升本考试

【单选题】 The trainer usually gives the animal a piece of candy or fruit ______.
A．when it is hungry
B．before it plays a trick
C．when it starts to play a trick
D．after it has done the trick

网考网参考答案：D
网考网解析：
指动物做一个表演，就给它一些吃的东西。 查看试题解析出处>>