原材料引用（Materials）：
This is the VOA Special English Health Report.
Cardiopulmonary resuscitation, or CPR, can save the life of someone whose heart has stopped. The condition is called cardiac arrest. The heart stops pumping blood. The person stops breathing. Without lifesaving measures, the brain starts to die within four to six minutes.
CPR combines breathing into the victim's mouth and repeated presses on the chest. CPR keeps blood and oxygen flowing to the heart and brain.
However, a new Japanese study questions the usefulness of mouth-to-mouth breathing.
The study was published in the British medical magazine, The Lancet. Doctors in Tokyo led the research. It examined more than four thousand people who had suffered cardiac arrest. In all the cases, witnesses saw the event happen.
More than one thousand of the victims received some kind of medical assistance from witnesses. Seven hundred and twelve received CPR. Four hundred and thirty-nine received chest presses only. No mouth-to-mouth rescue breaths were given to them.
The researchers say any kind of CPR improved chances of the patient's survival. But, they said those people treated with only chest presses suffered less brain damage.
Twenty-two percent survived with good brain ability. Only ten percent of the victims treated with traditional CPR survived with good brain ability.
The American Heart Association changed its guidelines for CPR chest presses in two thousand five. It said people should increase the number of chest presses from fifteen to thirty for every two breaths given.
Gordon Ewy is a heart doctor at the University of Arizona College of Medicine in Tucson. He wrote a report that appeared with the study. Doctor Ewy thinks the CPR guidelines should be changed again. He said the heart association should remove rescue breaths from the guidelines.
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.
信息和事实（Facts）：
感受与评价（Comments）：
1.今天是跟原声同步练习的，知道自己前几天快到哪里了，句子与句子之间停顿不够，基本上上句紧接下句，跟原声同步的时候还好，不听原声自己的时候还是有些偏差，不过比之前好了很多了。
2.今天S老师问有没有听自己的预习录音的时候，我听了呀，虽然不是惨不忍睹，但是一听就是明显的口腔前侧发音，没有声带振动的感觉，该张大嘴的地方也没有张，该伸舌头的地方也没有伸，其实这么说来也够惨不忍睹的了。
3.明天就结业仪式了，突然觉得S老师给我带来的是一种不用自己在费力寻找的学习方法，有时候自己苦哈哈的找了好久，也不知道到底怎么学习才是高效的，自从参加晨读班才感受到这种学习方法带来的收获，有一种感觉就是S老师把地基给你打好了，剩下的你想盖多高，想改成什么样子就靠你自己了，但是不用你自己再费心费力的去想我该怎么打地基呢。
统计累计的练习小时数（Hours）：
1h/27h