冬练三九(17)

He is said the heart Association should remove rescue breaths from the guidelines he argues that morewitnesses to cardiac arrest would provide treatment if rescue breaths are not a part of CPR.

语音语调还需要模仿调整,还是要多听多练

听了别人的发音,知道了各种各样的问题,特别可以帮助自己找到问题,也可以习耳朵,有时候想外国人也应该有各种各样的语音吧

累积练习半小时

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