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 hear 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.
信息与事实（Facts）：
练习材料的两个方式：
1，神同步。
难点在于什么时候开始，节奏，换气等。（每个人对时间的感知不同，只能不断练习。）
要感知节奏：把握整体篇章，跟着原声走一遍。
2，可以看英文说中文，进而再可以听着英文说中文。
总：用这样的方法练习一篇材料才是真正用好了材料，以前是浮在表面的。
英语就那么多东西，早点学好，去用就行了。
练：用这种强度练习一年英语材料，无所谓什么材料。进而，用这种强度做事情。
感受与评价（Comments）：
今天练习一次成型地走一遍文章。发现每天练习了句子，但是一旦整体读起来，离开了原声又找不对节奏和语调了，连有的单词都读不对了，功夫有没有下到位，果然一试就出来了。只能从头开始，一句一句跟着原声再学习。分成几部分，学完每句话，再整个部分读一下。耗了很多时间。最后终于完整读下来了，还是有很多不满意的地方，但已经是现阶段的水平了。感觉如果不读很快就会忘记的。想起S说的，容易得来的也容易失去。不下功夫，学到的东西是不能长久的。
累计练习小时数（Hours）：
2.5小时。
