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Exercise being good or bad Can exercise be a bad thing? Sudden death during or soon after strenuous exertion on the squash c
Exercise being good or bad Can exercise be a bad thing? Sudden death during or soon after strenuous exertion on the squash c
admin
2013-01-28
34
问题
Exercise being good or bad
Can exercise be a bad thing? Sudden death during or soon after strenuous exertion on the squash court or on the army training grounds, is not unheard of.【C1】______trained marathon runners are not immune to fatal heart attacks. But no one knows just【C2】______common these sudden deaths linked to exercise are. The registration and investigation of such【C3】______is very patchy; only a national survey could determine the true【C4】______of sudden deaths in sports. But the climate of medical opinion is shifting in【C5】______of exercise, for the person recovering from a heart attack as【C6】______as the average lazy individual. Training can help the victim of a heart attack by lowering the【C7】______of oxygen the heart needs at any given level of work【C8】______the patient can do more before reaching the point where chest pains indicate a heart starved of oxygen. The question is, should middle-aged people,【C9】______particular, be screened for signs of heart disease before【C10】______vigorous exercise?
Most cases of sudden death in sport are caused by lethal arrhythmias in the beating of the heart, often in people【C11】______undiagnosed coronary heart disease. In North America【C12】______over 35 is advised to have a physical check-up and even an exercise electrocardiogram. The British, on the whole, think all this testing is unnecessary. Not many people die from exercise,【C13】______, and ECGs(心电图)are notoriously inaccurate. However, two medical cardiologists at the Victoria Infirmary in Glasgow, advocate screening by exercise ECG for people over 40, or younger people【C14】______at risk of developing coronary heart disease. Individuals showing a particular abnormality in their ECGs【C15】______, they say, a 10 to 20 times greater risk of subsequently developing signs of coronary heart disease, or of sudden death.
【C15】
选项
A、having
B、had
C、having been
D、have
答案
D
解析
根据空格后时态可知,此处缺少一个一般现在时态的谓语动词,根据语法和句意,D项符合句意。
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本试题收录于:
职称英语理工类A级题库职称英语分类
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职称英语理工类A级
职称英语
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