首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Can exercise be a bad thing? Sudden death during or soon after strenuous exertion on the squash court or on the army training gr
Can exercise be a bad thing? Sudden death during or soon after strenuous exertion on the squash court or on the army training gr
admin
2013-01-30
40
问题
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. 46 trained marathon runners are not immune to fatal heart attacks. But no one knows just 47 common these sudden deaths linked to exercise are. The registration and investigation of such cases is very patchy; only a national survey could determine the true 48 of sudden deaths in sports. But the climate of medical opinion is shifting in favor of exercise, for the person recovering from a heart attack as 49 as the average lazy individual. Training can help the victim of a heart attack by lowering the 50 of oxygen the heart needs at any given level of work so 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, 51 particular, be screened for signs of heart disease before taking up vigorous exercise?
Most cases of sudden death in sport are caused by lethal arrhythmias in the beating of the heart, often in people 52 undiagnosed coronary heart disease. In North America anyone 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, 53 , 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 54 at risk of developing coronary heart disease. Individuals showing a particular abnormality in their ECGs 55 , they say, a 10 to 20 times greater risk of subsequently developing signs of coronary heart disease, or of sudden death.
选项
A、having
B、had
C、having been
D、have
答案
D
解析
这句话是讲,他们说,个人的心电图异常达到10到20倍的危险,紧随其后的就是冠心病或猝死。根据句意,应选择D。
转载请注明原文地址:https://kaotiyun.com/show/Thhi777K
0
在职申硕(同等学力)英语
相关试题推荐
Courageouspeoplethinkquicklyandactwithouthesitation.
Insteadofansweringthequestion,themanager______hisshouldersasifitwerenotimportant.
Revengeisoneofthosethingsthateveryoneenjoys.Peopledon’tliketotalkaboutit,though.Justthesame,thereisnothing
Revengeisoneofthosethingsthateveryoneenjoys.Peopledon’tliketotalkaboutit,though.Justthesame,thereisnothing
Ingeneral,theBritishpeoplebelongtooneofthemoreaffluentcountriesofEuropeandenjoyahighstandardoflivingcompar
Cananinventivesocietygetbolderasitgrowsolder?Thatquestionaffectspeopleofallages—especiallythoselivingintheU
Thebatisamarvelofevolutionaryadaptation.Mostofthemroostduringtheday,andareactiveatnightortwilightforthey
Differenceinpositionadoptedbyoxygenandhydrogenatomsaccountforvariationsinthecrystallinestructureofdifferentfor
FrictionbetweenAmerica’smilitaryanditscivilianoverseersisnothingnew.America’s220-yearexperimentinciviliancontrol
FrictionbetweenAmerica’smilitaryanditscivilianoverseersisnothingnew.America’s220-yearexperimentinciviliancontrol
随机试题
诊断前列腺癌时,可选择检测的肿瘤标志物
患者王某,A1缺失,A2B1做基牙,采用PFM全冠桥修复。某技师在堆塑瓷粉时,为了体现自然的瓷层颜色、层次和牙冠外形,其牙本质瓷堆塑的尺寸回切前与正常天然牙冠的关系是A.牙本质瓷的尺寸是正常天然牙冠的1/3B.牙本质瓷的尺寸是正常天然牙冠的1/2
治疗原发性肾病综合征错误的是
A、罂粟酸B、马钱子碱C、莨菪碱D、洋地黄皂苷E、其他甾体硫酸阿托品需检查的特殊杂质为
按编的目的分类,施工组织设计的类型有()。
政府质量监督机构在京验收时,对于不符合验收要求的要( )。
“工业三废”是指()
以下关于公共政策的说法正确的有()。
教室:教师:教材
信息系统工程项目进行投资控制时,应遵循的基本原则包括(52)________。①投资最少化原则②全面成本控制原则③静态控制原则④目标管理原则⑤责、权、利相结合原则
最新回复
(
0
)