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  3. Scientists Develop Ways of Detecting Heart Attack German researchers have come up with a new generation of defibrillators(除颤

Scientists Develop Ways of Detecting Heart Attack German researchers have come up with a new generation of defibrillators(除颤

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问题             Scientists Develop Ways of Detecting Heart Attack
    German researchers have come up with a new generation of defibrillators(除颤器)and early-warning software aimed at offering heart patients greater【C1】______from sudden death from cardiac arrest(心脏停搏).
    In Germany alone, around 100, 000 people die annually【C2】______a result of cardiac arrest and many of these cases are caused by disruption to the heart’s rhythm. Those most at【C3】______are patients who have already suffered a heart attack, and for years the use of defibrillators has proved useful in【C4】______life-threatening disruptions to heart rhythms and correcting them automatically by intervening within seconds. These devices【C5】______on a range of functions, such as that of pacemaker(起搏器).
    Heart specialists at Freiburg’s University Clinic have now achieved a breakthrough with an implanted, defibrillator【C6】______of generating a six-channel electrocardiogram(ECG, 心电图)within the body. This integrated system allows【C7】______diagnosis of severe blood-flow problems and a pending(即将发生的)heart attack. It will be implanted in【C8】______for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that【C9】______the evalution of ECG data more precise.
    The overwhelming majority of patients at risk will not have an implanted defibrillator and must for this【C10】______undergo regular ECGs. "Many of the current programs only take into【C11】______a linear correlation of the data. We are, however, making use of a non-linear process【C12】______reveals the chaotic patterns of heart beats as an open and complex system, " Hagen Knaf says, "In this way changes in the heart【C13】______over time can be monitored and individual variations in patients taken into account. " An old study of ECG data, based upon 600 patients who had【C14】______a subsequent heart attack, enabled the researchers to compare risks and to show that the new software evaluates the【C15】______considerably better.
【C4】
选项 A、leading
B、causing
C、diagnosing
D、repeating
答案C
解析 根据上下文，“数年来，除颤器的使用在诊断心率紊乱并在几秒钟之内自动干预以矫正心率方面是非常有用的”，故选C。
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