（48）__________ 查看材料A.So far we have not known exac
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（48）__________ 查看材料
A.So far， we have not known exactty yet whether mouth-to-mouth breathing is really useless in CPR.
B.Only ten percent of the victims treated with traditional CPR survived with good brain ability.
C.CPR keeps blood and oxygen flowing to the heart and brain.
D.His studies show that many people do not want to perform. mouth-to-mouth breathing on a stranger for fear of getting a disease.
E.It said people should increase the number of chest presses from fifteen to thirty for every two breaths given.
F.No mouth-to-mouth rescue breaths were given to them.
请帮忙给出正确答案和分析，谢谢！
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正确答案：正确B
本空白处的前面两句说到，只用胸部按压抢救过来的人大脑受损比较小，存活下来的人中有22％大脑功能良好，接下来这一句肯定是要与传统的两种方法结合的抢救模式作对比，选项B正好是这样的内容。