单选题
Which of the following measures is NOT encouraged from the human health perspective?
A、
Offer plenty of natural light through windows and skylights.
B、
Install bright blue LEDs near computer screens.
C、
Offer plenty of electric lights in the room and close the wind to avoid bacteria.
D、
Install "smart" lighting system.
【正确答案】
C
【答案解析】
[分析] 见文章最后一段。
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