单项选择题

According to Mr. Johnson, sunglasses for kids are even more important because kids’ eyes ______.

A．are less sensitive
B．open and close more quickly
C．take in more rays
D．filter out ultra-violet rays less sufficiently

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According to Mr. Johnson, sunglasses for kids are even more important because kids’ eyes ______. 您的浏览器不支持 audio 元素。