Miss Richards was a teacher at a school for boys and girls．She 1 ndline　 chemistry and physics from the lowest to the highest classes in the 2 ndline．Sometimes the new classes 3 ndline　 rapidly(迅速地)，but sometimes they were very 4 ndline，and then Miss Richards had to 5 ndline　 things many times．

　　One year，the first class had been studying chemistry for several 6 ndline　 when Miss Richards suddenly asked，“What is water? Who knows? 7 ndline　 up!”

　　There was silence(沉默) for a few seconds，and Miss Richards felt saddened(难过),but then one boy 8 ndline　 his hand．

　　“Yes，Dick?”said Miss Richards encouragingly(鼓励地)．He was not one of the brightest children in the class，so she was 9 ndline　 that he could answer．

　　“Water is a liquid which has no 10 ndline　 until you wash your hands in it，Miss．Then it turns black，” the boy replied with great confidence(信心)．

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阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。

　　Bertha Ingram had been collecting them for more than 40 years．Every once in a while she would bring home a new book．She'd sit with it on her leg, looking at the meaningless black marks without moving the eyes and cry．

　　She was not stupid．She simply had not had the 　　1　　 to learn to read．Her parents were sharecroppers in Florida in the 1920s．Sharecroppers did not own the 　　2　　 they farmed．Instead, they gave a part of their crops(plants grown on farms for food)to the owner．It was quite a hard way to 　　3　　 , and both of Bertha's parents worked hard in the fields．Often Bertha had to leave school to help．Before she was a teenager, Bertha's schooling was 　　4　　．

　　Bertha Ingram didn't learn to read 　　5　　 her early married life, 　　6　　．She wanted to, but she was always too busy．She worked all day．

　　Bertha Ingram's mind was sharp(敏锐地)．　　7　　 a housekeeper for other people, she had to memorize telephone messages．She became a good cook too, but she had to 　　8　　 everything she did because there was no cookbook she could read, and she couldn't write down what she had done．

　　In 1978 Bertha Ingram became very ill with a stroke(中风)．This illness 　　9　　 her to lose the use of one arm and both legs．It also weakened her ability to speak．　　10　　 she began to get better, she had a 　　11　　 thought for the first time in her life．Because she couldn't work, she had the time to learn to read．

　　In her town there was a special program that taught adults to read, but Bertha Ingram was quite 　　12　　．Would people laugh at her? Would they 　　13　　 to teach her? It didn't happen that way．She had a teacher who worked very hard with her．

　　After the first day Ingram could 　　14　　 wait to get to the library．As she learned to read, Ingram got more and more confidence in herself．She became a reader at religious(宗教的)services, joined neighborhood groups, and 　　15　　 at meetings in city hall．Finally she wrote a book telling about her life．At age 63, Bertha Ingram proved that learning never comes too late．

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　　A team of scientists from Ohio State University did experiments on 33 volunteers who were getting better from heart disease following operation．They found that people who exercised while listening to Italian musician Antonio Vivaldi’s “The Four Seasons” did much better on language ability tests than without music．

　　“Facts suggest that exercise improve the leaning ability of people with heart disease,” said the psychologist Charles Emery, who led the study．“And listening to music is thought to enhance understanding．We just wanted to put the two results together,” he added．

　　The volunteers said they felt better emotionally and physically after working out with or without the music．But their improvement on the test doubled after listening to music during exercise．Scientists have proved that music can be good for health, education and well-being．It helps reduce stress, sadness and nervousness, encourage relaxation or sleep; wakes up the body and improve memory and thought．

　　In medical fields, music is used widely for patients who have had head hurts before and after operation．“The Four Seasons” was used because of its moderate tempo(舒缓的节拍)and positive results in earlier research．“ Exercise seems to cause positive changes in the nervous system(神经系统)and these changes may have a direct result on learning ability,” Emery said．

　　Scientists have been studying the results of music on understanding since the early 1950s．By 1990, psychologists were using Mozart’s music, especially his violin pieces, to help children with speech disorders．Mozart’s was chosen because his music is not over-exciting and has clear structures．A study showed students who listened to Mozart went to score higher marks in an intelligence test．With important exams drawing near, your parents will not probably allow you to listen to music．But now you have good reasons to argue with them．

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