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（起聲波） 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 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了利用超聲波進行震顫治療的革命性改革，這種治療療效好，時間短，副作用小，極具研究價值．

解答 51．B．詞義猜測題．根據(jù)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"可知患者的并會導致手臂顫抖，詞義為晃動，顫抖；故選B．
52．D．細節(jié)理解題．根據(jù)文章第二段"the most common movement disorder that is often resistant to medical treatment"可知醫(yī)學幾乎無力治療這個疾�。还蔬xD．
53．A．細節(jié)理解題．根據(jù)文章第三段"The procedure does not require a general anesthetic and the patient is awake the entire time"可知該過程不需要全身麻醉，并不是只要一點麻醉劑；故選A．
54．C．細節(jié)理解題．根據(jù)文章倒數(shù)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"可知博士也是參與了震顫治療的研究的；故選C．
55．D．主旨大意題．通讀全文，可知文章主要關于利用超聲波進行震顫治療的革命性改革，這種治療療效好，時間短，副作用小，極具研究價值；故選D．

點評 考察學生的細節(jié)理解和推理判斷能力，做細節(jié)理解題時一定要找到文章中的原句，和題干進行比較，再做出正確的選擇．在做推理判斷題不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進行合乎邏輯的推理判斷．

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