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1.Brain scientists at Toroiiro's Sunnybrook,Hospital are revolutionizing the way patierits with tremors are treated--without surgery or allesthetic.
  Doctors have successfully used ultrasound wave(起声波) to reach an area deep inside the brains of patients suffering from a condition known as"essential tremor",the most common movement disorder that is often resistant to medical treatment.
  With the guidance of an,MRI(核磁振成像),more than.l,000 ultrasound beams are delivered to a small target in the brain,killing the cells that cause the uncontrollable shaking.The procedure does not require a general anesthetic and the patient is awake the entire time.Although only five patients have been treated with ultrasound waves in Canada so far,experts at Sunnybrook say the procedure seems to be safe,with"limited"side effects.
  Tony Lightfoot,68,is among the Paticiits Who underwent the procedure to treat his shaky arms and hands.Many patients with tremor have a verr difficult time using their hands to eat,drink or write,and for Lightfoot.the simple tasks ofdrinking water or buttoning his shirt were hard.He said the opportunity to undergo the ultrasound treatment was a"great hope for the future".
"I am hoping to be able to write again,"he said."I am hoping to write with a cup of coffee in my hand,withorit spilling.I am hoping to sit with a friend and if he offers me a cup of tea or coffee,I can hold it instead of throwing it all over the place."
   Dr.Andres L.ozano of Toronto Westem Hospital's Krembi Neuroscience Centre,which is working together with Sunnybrook,said the results of the ultrasound wave treatmeht are immediate."As soon as we burn the cells that cause the tremor,it goes away,"he said."This is the kind of surgery that allows you to come here and go home an hour later.
   Dr Micliael Schwartz,the man researcher,said the results so far are very exciting."Here's a chance to do something without making a hole in the patient,so there is no risk of damage and yet we can achieve the same results as surger)r,"he said.

51.The underlined word"tremors"in Paragraph I can be replaced byB.
A.illnesses     
B.shakes           
C.fevers            
D.cancers
52.What can you leam about"Essential tremor"according to the passage?D
A.It is often cause by viruses.
B.It is often passed on to patients'children.
C.It can be cured without any medical treatment.
D.Medicine hardly has any effect on it.
53.Which of the following is NOT the advantage of the ultrasound treatment?A
A.It needs only a little anesthetic.
B.It has limited side effects.
C.It will get a quick result.
D.It is very safe.
54.We can infer that Dr.Andres LozanoC.
A.is a doctor ofToronto's Sunnybrook Hospital
B.is in charge of the ultrasound treatment research
C.is involved in the ultrasound treatment research
D.is leading Western Hospital's Krembil Neuroscience Centre
55.What is the main  idea of the passage?D
A.Patients with tremors are treated with ultrasound waVes.
B.Doctors at Sunnybrook Hospital use surgery to Cure tremors.
C.Canadian doctors have found a cure to essential tremors.
D.Revolutionary treatmeni makes use of ultrasound to stop tremors.

分析 本文属于说明文阅读,作者通过这篇文章主要向我们描述了利用超声波进行震颤治疗的革命性改革,这种治疗疗效好,时间短,副作用小,极具研究价值.

解答 51.B.词义猜测题.根据文章第四段"Many patients with tremor have a verr difficult time using their hands to eat,drink or write,and for Lightfoot.the simple tasks ofdrinking water or buttoning his shirt were hard"可知患者的并会导致手臂颤抖,词义为晃动,颤抖;故选B.
52.D.细节理解题.根据文章第二段"the most common movement disorder that is often resistant to medical treatment"可知医学几乎无力治疗这个疾病;故选D.
53.A.细节理解题.根据文章第三段"The procedure does not require a general anesthetic and the patient is awake the entire time"可知该过程不需要全身麻醉,并不是只要一点麻醉剂;故选A.
54.C.细节理解题.根据文章倒数第二段"Dr.Andres L.ozano of Toronto Westem Hospital's Krembi Neuroscience Centre,which is working together with Sunnybrook,said the results of the ultrasound wave treatmeht are immediate"可知博士也是参与了震颤治疗的研究的;故选C.
55.D.主旨大意题.通读全文,可知文章主要关于利用超声波进行震颤治疗的革命性改革,这种治疗疗效好,时间短,副作用小,极具研究价值;故选D.

点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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