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问题 单项选择题

患者女，45岁，患风湿性心脏病二尖瓣狭窄，心房扑动，心功能不全，门诊服用地高辛、利尿药2个月，突然心率转为绝对规则，HR 40次/min。此患者住院当天突发头晕、黑蒙，HR 32次/min，BP 82/50 mmHg，此时最恰当的治疗是（）

A.静脉滴注异丙肾上腺素

B.肌内注射山莨菪碱

C.口服麻黄素

D.口服阿托品

E.安装临时起搏器

答案

参考答案：E

选择题

植物及其废弃物可制成乙醇燃料，下列关于乙醇燃料的说法错误的是[ ]

A．它是一种再生能源

B．乙醇易燃烧，污染小

C．乙醇只能在实验室内作燃料

D．粮食作物是制乙醇的重要原料

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单项选择题

As the pace of life continues to increase, we are fast losing the art of relaxation. (1) you are in the habit of rushing through life, being on the go from morning till night, it is hard to (2) down. But relaxation is (3) for a healthy mind and body.Stress is a (4) part of everyday life and there is no way to (5) it. In fact,it is not the bad thing that it is often supposed to be. A (6) amount of stress is important to provide motivation and give (7) to life. It is only when the stress gets out of control (8) it can lead to poor performance and (9) health.The amount of stress a person can bear(10) very much on the individual. Some people are not afraid of stress, and such (11) are obviously chief material for managerial responsibilities. Others lose heart at first (12) of unusual difficulties. When exposed to stress, in (13) form, we react both chemically and physically. In fact we (14) a choice between escape and fight. But in more ancient days they made the (15) between life and death. The crises (危机)we meet today are (16) to be so extreme,but however little the stress,it requires the same response. It is when such a reaction (17) long，through continued exposure to stress，that health becomes (18) ．Such serious conditions as high blood pressure and heart diseases have (19) links with stress． (20) we canno! remove stress from our lives we need to find ways to deal with it．It would be unwise to do so even it we could．So what do you think of stressWhat is your way to deal with it.

 

第（16）空应选择（）

A．unlikely

B．likely

C．necessary

D．probable
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