People will find themselves suffering from headache and watering eyes and even snowblindn

外语类 专四 已帮助 人

People will find themselves suffering from headache and watering eyes, and even snowblindness, when______to several hours of "snow light".

A.being exposed

B.having been exposed

C.exposed

D.exposing

请帮忙给出正确答案和分析,谢谢!

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