Materials： 全篇练习、全篇音标练习 Facts： 对照录音进行全篇模仿，差不多模仿了六七遍，依然不能做到误差在1秒之内，句子与句子、篇...

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

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

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

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

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

Materials： Seven hundred and twelve received CPR. Fourhundred and thirty...

Materials： 9. The study was published in the British medical magazine, T...

Materials： 5. Without lifesaving measures, the brain starts to die withi...