[单选题]Many animals may be trained to do simple jobs if they know__________. 查看材料
Awho their trainers are
Bthey will be praised by their trainers
Cthey will get a reward
Dsomething dangerous will happen to them
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参考答案
试题答案：
C
答案解释：
由第二段最后一句“The scientists say that?many different animals may be trained to do a number of?simple jobs if they know they will get a reward for doing?them．”可知C项正确。
