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芭比英语听力?对不起,我没有.您现在的位置：&&&&&&&&&&&&&&&&
VOA慢速英语《健康报道》第11课
时间:12-05-27作者:randy27来源：
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英语翻议讲解：
中风是导致死亡和残疾的重大原因。中风主要是由于大脑缺血，主要分为两种：脑部血管阻塞时发生缺血性中风。另外一种是出血性中风，发生在血管破裂时。
出血性中风导致死亡的可能性更大。但是缺血性中风更常见，医生可能病人进行治疗。
一种叫做tPA的药物可以分解血块。但是传统的指导方法表示，如果出现中风症状已超过三小时就不要再服用tPA。
如果在病人中风期间注射血液稀释剂容易造成大脑内出血。专家表示，等待的时间越长，治疗的风险就比好处更大。
但是最近的研究结果表明，即使已经过去3-4.5个小时，tPA仍然能够有效的拯救脑组织。
一些研究没有提供中风三个小时后进行治疗仍然有效的明显证据。但是科学家报道称，如果将最近进行的四项主要调查结合起来就能够找到更加充分的证据。最新的研究结果发表在《中风学杂志》上。
研究人员称，tPA将治疗成功的可能性提高了31%，而死亡率则没有变化。
加利福尼亚斯坦福大学医学院的Maarten Lansberg与来自比利时和德国的科学家一起进行了研究。其中一人就职于制造tPA的公司，该公司的药物主要供给欧洲的使用。美国国家卫生院为这项研究提供资金。
如果你认为某人中风，应该立即寻求帮助。预警症状通常会立即出现，包括行走困难，身体一侧微弱，视力和讲话出现问题。
但是，即使是看上去很健康的人也有可能在完全不知道的情况下发生中风。去年发表在《中风学杂志》上的一项研究对平均年龄62岁的2000人进行了调查。脑电图显示，接近11%的人曾经发生过无声中风。
研究人员报道了无声中风和心房纤维性颤动之间的联系。这是年长人群出现心跳异常最常见的原因。造成无声中风的其他风险因素包括高血压，心脏病，糖尿病和抽烟。
1.disability n. 无力,无能,残疾
例句：His disability prevents him from holding a job.&&&&& 他的伤残妨碍他就业。
&&&&& Blindness is a very serious disability.&&&&& 失明是非常严重的残疾。
2.vessel n. 血管,导管
3.guideline n. 指导路线
例句：Accounting practice needs certain guidelines to action.&&&&& 会计实践需要行动指南。
4.outweigh vt. 比…为重,比…重要,比…有价值
例句：The advantages outweigh the drawbacks.&&&&&& 优点胜过缺点。
<bine v. 使结合,使联合;兼有,兼备;使化合
例句：The allies combined their forces.&&&&& 同盟国把他们的兵力联合起来。
&&&&& He combines theory with practice.&&&&& 他结合理论与实践。
6.abnormal a. 不正常
例句：We do not think such an abnormal phenomenon will last long.&&&&& 我们认为这样的反常现象不会持续很久。
1.People are more likely to die from a bleeding stroke.
die from/of因某事而死
例句：He died from an overdose of barbiturates.&&&&& 他因服用过量巴比土而死亡。
2.A drug called tPA can break up blood clots.
break up打碎,破碎,分裂,结束,衰落,分解,变坏,驱散
例句：Police were called in to break up the meeting.&&&&& 出动了警察将集会驱散。
3.But recent findings have suggested that tPA may be effective in saving brain tissue even if three to four and a half hours have passed.
even if即使,尽管,纵然。引导让步状语从句
例句：Don't let down even if the going is good. &&&&& 即使在顺利的情况下也不要松劲。
4.These include trouble walking, weakness especially on one side of the body, difficulty seeing and difficulty speaking.
have difficulty doing sth做某事有困难
例句：I have difficulty remembering names. &&&&& 我不易记住人名。
英语听力原文：
This is the VOA Special English Health Report.Strokes are a major cause of death and disability. A stroke is a loss of blood flow in the brain. There are two kinds. An ischemic stroke happens when a blood vessel in the brain gets blocked. A hemorrhagic, or bleeding, stroke happens when a blood vessel breaks.People are more likely to die from a bleeding stroke. But ischemic strokes are more common, and doctors may be able to treat them.A drug called tPA can break up blood clots. But traditional guidelines say not to use tPA if more than three hours have passed after the first signs of a stroke.There is a risk that giving a patient a strong blood thinner during a stroke can cause bleeding inside the brain. The longer the wait, experts say, the more likely that the risks of treatment will outweigh the benefits.But recent findings have suggested that tPA may be effective in saving brain tissue even if three to four and a half hours have passed.Some studies have failed to produce clear evidence to support treatment after three hours. But scientists reported that the evidence was stronger when they combined the results of the four major studies done so far. The new findings appeared in the journal Stroke.The researchers said tPA improved the chances of a successful result by thirty-one percent and produced no change in the death rate.Maarten Lansberg at the Stanford University medical school in California worked with scientists from Belgium and Germany. One of them worked for a company that makes tPA for use in Europe. The United States National Institutes of Health paid for the study.If you think someone is having a stroke, you should seek help immediately. The warning signs usually appear suddenly. These include trouble walking, weakness especially on one side of the body, difficulty seeing and difficulty speaking.Yet people who seem healthy can suffer a stroke without even knowing it. A study published in Stroke last year involved about two thousand people with an average age of sixty-two. Brain imaging showed that nearly eleven percent of them had suffered what is known as a silent stroke.The researchers reported a link between silent strokes and a condition called atrial fibrillation. This is the most common cause of abnormal heartbeat in older adults. Other risk factors for a silent stroke are high blood pressure, heart disease, diabetes and tobacco use.And that's the VOA Special English Health Report. For more health news, go to rrting.net. I'm Steve Ember.
责编:randy27&&&
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