No one is glad to hear that his body has to be cut open by a surgeon(外科医生)and part of it is taken out. Today,however,we needn't worry about feeling pain during the operation. The sick person falls into a kind of sleep,and when he awakes,the operation is finished. But these happy conditions are fairly new. It is not many years since a man who had to have an operation felt all its pain.

　　Long ago,operations had usually to be done while the sick man could feel everything. The sick man had to be held down on a table by force while the doctors did their best for him. He could feel all the pain if his leg or arm was being cut off,and his fearful cries filled the room and the hearts of those who watched.

　　Soon after 1770,Josept Priestley discovered a gas which is now called “laughing gas”.Laughing gas became known in America. Young men and women went to parties to try it. Most of them spent their time laughing,but one man at a party,Horace Wells,noticed that people didn't seem to feel pain when they were using this gas. He decided to make an experiment on himself. He asked a friend to help him.

　　Wells took some of the gas,and his friend pulled out one of Well's teeth. Wells felt no pain at all. As he didn't know enou gh about laughing gas,he gave a man less gas than he should have. The man cried out with pain when his tooth was being pulled out.

　　Wells tried again,but this time he gave too much of the gas,and the man died. Wells never forgot this terrible event.

　　51. It is ____ since a man being operated felt all the pain.

　　A. a few more years B. not very long

　　C. few years D. two thousand years

　　52. Long ago,when the sick man was operated on， he ____.

　　A. could feel nothing B. could not want anything

　　C. could feel all the pain D. could do anything

　　53. Using the laughing gas,the people did not seem to ____.

　　A. be afraid of anything B. feel pain

　　C. want to go to the parties D. be ill

　　54. If a man took less laughing gas than he should have when an operation went on,he ____.

　　A. felt nothing B. felt very comfortable C. still felt pain D. would die

　　55. One who took too much of the laughing gas ____.

　　A. would laugh all the time B. would die

　　C. would never feel again D. would be very calm

　　阅读理解答案：51—55 BCBCB

　　Several months after I was badly hurt in a car accident,my father sent me to a blind school.

　　That morning was the new beginning. I went to this school and I heard lots of children. My new teacher took me to the class where we were taught to write and type in Braille(盲文). I found it quite difficult.

　　"Hi,sweetheart,how is school going?"asked my father.

　　"Daddy,I can't do this. I try and try but I just don't get it. I don't know if I am ever going to learn to read Braille. It/s too difficult,"I cried.

　　Daddy just held me in his arm and said."Do you remember that we went to the temple which is on the top of a mountain?When we were climbing the mountain,my legs started aching.I sat down and said.'I can't see the temple. You can't see it because it is covered with fog. Although you can't see it.I know it is there. I will make sure you will climb up to it.'”

　　"That day you showed me that just you can't see something does not mean it is not there. So although climbing the mountain was difficult,I knew I would get to the top.”

　　I was cleat what my dad wanted me to understand.

　　I went back to school and started with new energy. Very soon I could red.

　　One of my classmates said,"You are lucky,you know,you have at least seen the world. I have just heard it. I have been told there are many colors in this world but I don't understand what color means.”

　　After listening to her for the first time in two years,I felt lucky. And on that day I learnt that although the light in my eyes is gone,I must see the world with the light in my heart.

　　46. What can we know about the writer?

　　A. He was born blind.

　　B. He was sent to a blind school because he wanted to learn Braille.

　　C. He couldn't see anything after a car accident.

　　D. He disliked the new school.

　　47. What did the writer think of reading Braille?

　　A. It was easy. B. It was difficult

　　C. It was interesting. D. It was boring.

　　48. What did the writer's dad want him to understand?

　　A.You can't see anything,but it doesn't mean it is not there.

　　B.Climbing the mountain is as easy as learning Braille.

　　C.Nothing in the world is difficult for one who sets his mind to it.

　　D.Cheer up! Life is full of choices， so choose to be happy.

　　49. One of the writer's classmates thinks he is lucky because the writer____.

　　A.has once seen the world

　　B.spent the least time learning Braille well

　　C.knew the real meaning of color

　　D.could tell what the world is like without seeing it

　　50. What does the last paragraph want to tell us?

　　A.The most beautiful thing in the world must be felt with the heart.

　　B. People can't live a happy life unless the can see.

　　C.The writer will live a healthy life with the light in his heart.

　　D.The writer's suffering(痛苦)would go away in the wind.

　　阅读理解答案：46—50 CBCAC