1.原材料引用（Materials）
预习：He argues that more witnesses to cardiac arrests would provide treatment if rescue breaths are not a part of CPR. 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 three hundred thousand people in the United States every year. The American Heart Association says about ninety-five percent of victims die before they get to a medical center.
And that's the VOA Special English Health Report, written by Caty Weaver. I’m Bob Doughty.
2.信息和事实（Facts）
3.感受和评价（Commens）
4.统计累计的练习小时数（Hours）
累计1+8=9小时
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