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—According to a recent survey, many stud...

—According to a recent survey, many students have poor eyesight (视力).

—In my opinion, reading on mobile phones too often is the ________ of having poor eyesight.

A.cost B.result C.cause

 

C 【解析】 句意:——根据最近的一项调查,许多学生视力不好。——在我看来,经常用手机阅读是视力不好的原因。 考查名词辨析。cost花费,代价;result结果;cause原因,起因。根据题意“经常用手机阅读是视力不好的____”,结合常识及选项可知应是原因,用cause符合题意。故选C。  
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