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原材料引用（material） Four hundred and thirty-nine received chest presses only.No mouth-to-mo...

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原材料引用（material） In all cases，witnesses saw the event happen.More than one thousand of t...

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2019-01-07 Yanni的S英语晨读7期 D15 原材料引用（material） Doctors in Tokyo led the research.It exami...

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Yanni的S英语晨读7期 D11 原材料引用（material） However，a new Japanese study questions the usefulness...

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原材料引用（material） However，a new Japanese study questions the usefulness of month-to-month...

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原材料引用（material） CPR keeps blood and oxygen flowing to the heart and brain 信息和事实(Facts) ...

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原材料引用（material） CPR combines breathing into the victim's month and repeated presses on ...

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原材料引用(Material) Without lifesaving measures，the brain starts to die within four to six ...

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原材料引用(Material) The heart stops pumping blood.The person stops breathing. 信息和事实(Facts) ...

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原材料引用(Material) The condition is called cardiac arrest. 信息和事实(Facts) 学习音标 /ʃ/ /ʒ/ /k/ 发...

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材料：This is the VOA Special English Health Report 知识点： 1.ð，更注重声带得振动，送气力量没有θ大。 2.f，v要下唇轻触...

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练习材料: Lesson77 A successful operation The mummy of an Egyptian woman who died in 800 B....

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Lesson 75 SOS When a light passenger planeflew off coursesome time ago, itcrashedin the...

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练习材料 Lesson74 Out of the limelight An ancient bus stopped by a dry river bed and a part...

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练习材料： Lesson71 A famous clock When you visit London, one of the first things you will s...

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[Day66 20181212] 练习材料： Lesson 66 Sweet as honey! In 1963 a Lancaster bomber crashed on ...

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[Day65 20181211] 练习材料： Lesson65 Jumbo versus the police Last Christmas, the circus owne...