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【单选题】
Back in 2010, what kind of change did the birth of social media bring about according to the speaker?A.
People were enabled to interact with one another online.
B.
people's privacy was made more prone to cyber exposure without them knowing it.
C.
People had easier access to more information by sharing articles, photos or videos.
D.
It evolved into the hotbed for cyber bullying and cyber harassment.
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【简答题】心跳呼吸停止后，最容易出现的继发性病理改变是 （ ）
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