【判断题】【消耗次数：1】
低剂量照射紫外线，对微生物几乎没有影响，但以超过某一阈值剂量的紫外线照射，则会导致微生物的基因突变。
①
正确
②
错误
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【单选题】
阳光中的紫外线照射到皮肤上可生成( )。
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