原材料引用(Material): However, a new japanese study questions the usefulness of the mouth-to...

原材料引用(Material): However, a new japanese study questions the usefulness of the mouth-to...
原材料引用(Material): CPR keeps blood and oxygen flowing to the heart and brain.信息和事实(Facts)...
原材料引用(Material): CPR combines breathing into the victim's mouth and repeatedpresses on ...
原材料引用(Material): Without lifesaving measures, the brain starts to die within four to si...
原材料引用(Material): The heart stops pumping blood. The person stops breathing.信息和事实(Facts)...
原材料引用(Material): The condition is called cardiac arrest. 信息和事实(Facts): 跟着《剑桥国际英语语音教程(美音...
原材料引用(Material): Cardiopulmonary resuscitation, or CPR, can save the life of someone wh...
原材料引用(Material): This is the VOA Special English Health Report. 信息和事实(Facts): 看了网上4个音标的...
原材料引用(Material): (全文) 信息和事实(Facts): (听着原声跟读了2、3次,然后完成了预习录音) 感受与评价(Comments): 自己读与听录音感觉还...