阅读下面短文，掌握其大意，然后从各题所给的A、B、C、D四个选项中选出最佳选项。

Norman Bethune is one of China’s most famous heroes, but he wasn’t Chinese—he was Canadian. He gave his life to helping the Chinese people.

Norman Bethune 46　 born in 1890. He became a 47　 in 1916, and he went to the front to look after injured soldiers in the First World War. He saw many soldiers die in the war. Later he invented new treatments to 48 soldiers, and medical tools to use outside hospital.

In 1938 he came to treat the Chinese soldiers in the mountains north of Yan’an. There were 49 doctors, so he had to work very hard. He opened hospitals to give treatment to local people and soldiers, and to train doctors and nurses. He also wrote books so that doctors could learn about new treatments.

Dr Bethune worked very hard without stopping to 50　 . Once, he preformed operations 　51 69 hours without stopping, and saved 112people. He 　52 working in spite of cutting his hand during an operation. In the end, he died because he did not take care of his 　53 .

Dr Bethune’s work with the Chinese soldiers made 54　 a hero in China. There are books and films about him, and he is 55　 remembered in both Canada and China.

46. A. is　　　 B. was　　 C. has been　 D. be

47. A. doctor　 B. nurse　 C. teacher　　 D. worker

48. A. understand B. believe C. help　　　 D. count

49. A. little　 B. few　　 C. much　　 D. many

50. A. rest　　 B. act　　 C. agree　　　 D. think

51. A. from　 B. since　　 C. with　　　 D. for

52. A. allowed B. continued C. forgot　　 D. stopped

53. A. face　　 B. leg　　　 C. foot　　　 D. hand

54. A. his　　 B. he　　　 C. him　　　 D. one

55. A. still　　 B. never　　 C. hardly　　 D. Regularly

I was now five, and still I showed no much interest in things except with my toes（脚趾）. I could not look after myself,   35  my father took care of me. I used to lie on my back all the time in the kitchen. I was   36 , imprisoned（监禁） in a world of my own, unable to communicate with others.
Then, suddenly, it happened on the afternoon of a cold December day. All the family were gathered round the big kitchen fire. Mona and Paddy were drawing funny animals, using a bright piece of yellow chalk. It was the chalk that   37  me so much. I had never seen anything like it before.
Suddenly, I wanted to do what my sister was doing. Then without thinking or knowing exactly what I was doing, I   38  out and took the chalk out of my sister’s hand, with my left foot. It is a puzzle（迷惑）to many people as well as to   39 . I held the chalk tightly between my toes and made a wild scribble（乱涂）with it on the board. Next moment I stopped, not knowing what to do with the chalk next, hardly knowing how it   40  there. Then I looked up and realized that everyone was looking at me   41 . My mother came in. Her eyes looked from my face down to my   42 , then she took another piece of chalk from Mona, and drew the single letter “A” on the floor in front of me. “Copy that, Christy.” She said. I tried to do the same action, but I   43 . “Try again, Chris.” she whispered in my ear. I tried another two more times. I drew one side of the letter, then the other. It looked ugly, but I   44  to make it finally. I had done it! True! I couldn’t speak with my mouth, but now I would speak through something more   45  than spoken words. That one letter was my   46  to a new world, my key to mental freedom.