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题目内容
（河南城建学院-大学英语2）
One possible reason for scientists to make experiments with rats or other animals is that _________.
A) rats benefit from the experiments
B) the experiments can boost the brains of the rats
C) an effect found in rats may also apply to humans
D) rats and humans are very much alike
A) rats benefit from the experiments
B) the experiments can boost the brains of the rats
C) an effect found in rats may also apply to humans
D) rats and humans are very much alike
参考答案