Materials 全文 Facts 用腹部发音，我无法读完全文。 Comments 1、虽然没有连续交作业，但是坚持把课上完。深刻的理解了，练...

Materials The American Heart Association says about ninety-five percent ...

Materials Doctor Ewy thinks the CPR guidelines should be changed again. ...

Materials He says this would save lives. Studies show that many people d...

Materials It said people should increase the number of chest presses fr...

Materials Twenty-two percent survived with good brain ability. Only ten ...

Materials The researchers say any kind of CPR improved chances of the pa...

Materials Seven hundred and twelve received CPR.Four hundred and thirty-...

Materials Doctors in Tokyo led the research. It examined more than four ...