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题目内容
（河南城建学院大学英语四）
17. (单选题) What made scientists think that animals can be trained to for us one day ? （ ）(本题1.0分)
A、 Animals are very skillful at a circus.
B、 Animals are big and strong..
C、 Some animals are good at doing many things.
D、 Animals like to get a reward.
A、 Animals are very skillful at a circus.
B、 Animals are big and strong..
C、 Some animals are good at doing many things.
D、 Animals like to get a reward.
参考答案