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II.第二部分：阅读理解( 满分30分) A Once Wilhelm K. Roentgen and several other scientists were experimenting with passing electric currents through certain gases in a special glass tube from which the air had been taken away. Then one day Roentgen noticed that when the tube was covered with black paper, some strange kind of radiation was coming through and making a screen nearby glow(发光). Roentgen could see anything out of the tube, but then he discovered that if he put the screen at the next room on the other side of a closed door, the rays still seemed to affect it. The glowing screen showed that the rays could pass not only through the black paper but also through wood. The next thing he found out was that if he put his hand between the rays and a photographic plate, the rays would print a shadow of the bony(骨头的) framework of his hand on the plate. In fact, the rays could pass as easily through the fleshy part of his hand as through the black paper. But hardly at all through the bone. So Roentgen made the first X-ray picture of a hand showing just how the bones in the hand fitted together. Roentgen called the unknown rays X-rays, but other scientists called them Roentgen rays in memory of the man who first found them. 41.Roentgen discovered X-rays ___________. A.by working hardB.by chance C.by doing experiment after experimentD.with the help of several other scientists 42.What was in the special glass tube? A.AirB.NothingC.Nothing but gasesD.None of the above 43.We may conclude that the rays Roentgen found were __________. A.dangerousB.invisibleC.colorfulD.poisonous 44.What could X-rays hardly pass through? A.WoodB.GlassC.BonesD.Black paper 45.Which title best gives the main idea of the passage? A.the Discovery of Roentgen Rays.B.The Discovery of Electric Currents. C.The First X-ray Picture of a Hand.D.The Use of the Photographic Plate. B American pilot Frank Webb first flew a glider at the age of 14, made his first flight alone on his 16th birthday and got his commercial pilot’s license(执照)on his 18th birthday. After serving in the US Navy for 20 years, being a Boeing flight instructor, and working with Alaska Airlines for more than three years, Webb signed a contract with Shenzhen Airlines last May to captain domestic routes in China. As an experienced pilot, he still feels the same nervousness as he felt on his first fight. Captain Webb said that the “Sept. 11” incident did not have a direct influence on his decision to move to China to work. “Safety is in fact tighter in the United States and I am not worried about a terrorist attack,” he said. “The main reason I came to China was that my children will have a chance to see the world and experience international living.” Webb has not experienced any in-flight emergencies(紧急情况) during his term in China although he said the weather here was generally more changeable than in the United States. “The weather changes tend to be great from north to south. We may be flying in a snow storm in Harbin, and then later that same day we may be flying through a tropical rain shower approaching Shenzhen,” Webb said. While Webb had more flexibility(灵活性) to deal with the weather in the United States, he said air traffic control in China was more strict and allowed fewer deviations(偏离). Speaking of planes often being late in China, Webb said that in America, being late was one of the few things that would get him in trouble. “In China, on the other hand, it seems there are many things that can get you in trouble with the boss, but being late is not one of them.” Webb does everything in his power to keep his flights on schedule. “They provide really excellent service during flights. Western flight attendants just serve passengers. But the Chinese attendants will also check on the crew(机组人员)to see if we need anything,” Webb said. 46.Webb signed a contract with Shenzhen Airlines because _____. A.he was afraid of the influence of “Sept. 11” B.he got a better pay there than in the US C.he thought more for his children D.he hoped to see the beautiful sights in China 47.The underlined word “glider” (in Paragraph 1) refers to “___ __”. A.a type of plane B.a type of car C.a type of bike D.a type of motor 48.The changeable weather in the flight Webb met in China _____. A.made him excited B.caused him frightened C.affected his health D.increased his difficulty 49.Webb is a pilot who _____. A.has been tired of planes’ being late B.has never had the experience of planes’ being late C.is trying his best to keep his flights on time D.finds it hard to understand China’s air traffic control 50.Webb’s words in the last paragraph show that he _____. A.is not satisfied with Western flight attendants B.thinks highly of the flight attendants in China C.encourages Chinese flight attendants to improve services D.admires the services of Western flight attendants C (责任编辑：admin) |