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Tom at once answered, “Your brother. Because electricity travels faster than sound waves.” “That's every good,” Miss Gogers answered; but then one of the girls raised her hand, and Miss Gogers said. “Yes, Kate.” “I disagree,” Kate said. “Your brother would hear you earlier because when it's 11 o'clock here it's only 8 o'clock in Los Angeles.” 48. Miss Gogers was teaching her class_________. A. how to telephone B. about electricity C. about time zone(时区) D. about sound 49.Miss Gogers raised this question because she wanted to know whether______. A. it was easy to phone to Los Angeles B. her student could hear her from 75 feet away C. her students had grasped her lesson D. sound waves were slower than electricity 50.Tom thought that electricity was _________. A. slower than sound waves B. faster than sound waves C. not so fast as sound waves D. as fast as sound waves 51.Kate thought Tom was wrong because _______. A. clocks in Los Angeles showed a different time from those in New York B. electricity was slower than sound waves C. Tom was not good at physics at all D. Tom's answer had nothing to do with sound waves 52.Whose answer do you think is correct according to the law of physics? A. Tom's B. Kate's C. Bath A and B D. Neither A nor B D The Chinese invented paper in 105 A. D. They mixed the bark of a tree and rags (破布) with water, put a screen into the mixture, and lifted out a thin piece of wet paper. They dried the paper in the sun. The Chinese kept their secret of how to make paper until a war with Muslims in the ninth century. The art of papermaking soon spread throughout the Muslim world. The Mayan Indians in Central America and Pacific Islanders also discovered how to make paper, but their knowledge never spread to the rest of the world. For centuries, all paper was made by hand. Rags were the main material. Then a French scientist discovered that people could make paper from wood, too. Finally, in the eighteenth century. a Frenchman invented a machine to make paper from wood. 53. Who discovered how to make paper? A. The Chinese. B. The Pacific Islanders. C. The Mayan Indians. D. All of the above. 54. When did the Chinese invent paper according to the passage? A. About 1 ,800 years ago. B. About 1, 900 years ago. C. About 2, 000 years ago. D. About 2, 100 years ago. 55. How was papermaking introduced into the rest of the world from China? A. Through wars. B. Through the Muslims. C. Through the Mayan Indians. D. Through the Pacific Islanders. 56. Which of the following is the best title for this passage? A. The Invention of Paper. B. The History of Papermaking. C. Different Ways of Making Paper. D. The Invention of a Papermaking Machine. E During the twentieth century there has been a great change in the lives of women. A woman marrying at the end of the nineteenth century would probably have seven or eight children, of whom four or five lived till they were five years old and up. By the time the youngest was fifteen, the mother would have been in her early fifties and would expect to live a further twenty years, during which chance and health made it unusual for her to get paid work. Today women marry younger and have fewer children. Usually a woman’s youngest child will be fifteen when she is forty-five and can be expected to live another thirty-five years and is likely to take paid work until sixty. This important change in women’s life has only recently begun to have its full effect on women’s economic (经济的) position. Even a few years ago most girls left school and took a full-time job. However, when they married their school-leaving age is sixteen. Many girls stay at school after that age, and though women marry younger, more married women stay at work at least until shortly before their first child is born. Many more afterwards return to fuller part-time work. Such changes have led to a new relationship in marriage (婚姻), with the husband accepting a greater share of the duties and satisfactions of family life. 57. One reason why the woman of today may take a job is that she __________. A. is younger when her children are old enough to look after themselves B. does not like children herself C. needn’t worry about food for her children D. can be free from family duties when she reaches sixty 58. Many girls are now likely to __________. A. give up their jobs for good after they are married B. leave school as soon as they can C. marry so that they can get a job D. continue working until they are going to have a baby 59. According to the passage, it is now quite usual for women to __________. A. stay at home after leaving school B. marry men younger than themselves C. start working again in life D. marry while still at school (责任编辑：admin) |