Why there is an emergency to do this pose:leaning,down,Arms cover your head,We hold hands before?

　　错解：做这个动作是证明我们在发生紧急情况的时候可以保持清醒，还可以保护牙齿，如果出现坠毁，验尸官可以通过牙齿辨认。

Wrong solutions:Do this action is to prove that we in case of emergencies can stay awake,Also can protect the teeth,If a crash,The coroner can identify the teeth.

　　【事实】：这个动作可以保证乘客在发生情况的时候避免二次受伤。