第6部分：完形填空(第51~65题，每题1分，共15分)
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案，涂在答题卡相应的位置上。
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 ____ (64) ____ a subsequent heart attack, enabled the researchers to compare risks and to show that the new software evaluates the ____ (65) ____ considerably better.
51. A. service B. discount C. protection D. advice
52. A. for B. as C. with D. in
53. A. last B. all C. once D. risk
54. A. leading B. causing C. diagnosing D. repeating
55. A. put B. go C. take D. keep
56. A. worthy B. full C. proud D. capable
57. A. final B. differential C. usual D. early
58. A. doctors B. researchers C. patients D. nurses
59. A. carries B. has C. requires D. makes
60. A. reason B. purpose C. treatment D. chance
61. A. account B. trouble C. confusion D. effort
62. A. what B. that C. since D. it
63 A. beats B. failures C. attacks D. shapes
64 A. suffered B. launched C. avoided D. started
65. A. option B. method C. proposal D. data
参考答案: CBDCC DDCDA ABAAD
