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第6部分：完形填空（第51～65题，每题1分，共15分）
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
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 _________(51) from sudden death from cardiac arrest（心脏停搏）.
In Germany alone, around 100,000 people die annually _________ (52) a result of cardiac arrest and many of these cases are caused by disruption to the heart’s rhythm. Those most at _________ (53) are patients who have already suffered a heart attack, and for years the use of defibrillators has proved useful in _________ (54) life-threatening disruptions to heart rhythms and correcting them automatically by intervening within seconds. These devices _________(55) 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 _________ (56) of generating a six-channel electrocardiogram (ECG，心电图）within the body. This integrated system allows _________(57) diagnosis of severe blood-flow problems and a pending（即将发生的）heart attack. It will. be implanted in _________(58) for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that _________(59) the evaluation of ECG data more precise.
The overwhelming majority of patients at risk will not have an implanted defibrillator and must for this _________ (60) undergo regular ECGs. "Many of the current programs only take into _________(61) a linear correlation of the data. We are, however, making use of a non-linear process _________(62) reveals the chaotic patterns of heart beats as an open and complex system," Hagen Knaf says. "In this way changes in the heart _________ (63) 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 to compare risks and to show that the new software evaluates the considerably better.
51．A．service B．discount C．advice D．protection
52．A．for B．as C．with D．in
53．A．risk B．last C．all D．once
54．A．leading B．causing C．diagnosing D．repeating
55．A．take B．put C．go D．keep
56．A．worthy B．full C．proud D．capable
57．A．final B．early C．differential D．usual
58．A．patients B．doctors C．researchers D．nurses
59．A．carries B．has C．makes D．requires
60．A．purpose B．reason C．treatment D．chance
61．A．trouble B．account C．confusion D．effort
62．A．what B．since C．it D．that
63． A．failures B．attacks C．beats D．shapes
64．A．suffered B．launched C．avoided D．started
65．A．option B．data C．method D．proposal
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