Materials:
He says this would save lives.
Studies show that many people do not want to perform mouth-to-mouth breathing on a stranger for fear of getting a disease.
Cardiac arrest kills more than 300，000 people in the United States every year.
Facts:
原声这几句话的录音听了五六遍，然后练了几次就匆忙发到了群里，听了群里其他同学的录音再对比一下自己的发现我读的有一点快，不够稳。
Comments:
练习的太少了，打脸。
Hours：
听录音+练习 50分钟
