Based on the laser operation treatment of three patients。what can we infer from t

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Based on the laser operation treatment of three patients。what can we infer from the passage?

A.Laser light treatment is safe and effective.

B.Laser light treatment is dangerous and ineffective

C.Laser light treatment still requires much more studies.

D.Government should encourage doctors to do research of laser light treatment on the human body.

参考答案:

D通读文章第一段,根据第二段后半部分,特别是最后两句,可知正确的推断应是D项。