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1、选修二unit1课文填空训练 编号：38 编辑： 审核：英语组 时间： (1)JOHN SNOW DEFEATS KING CHOLERACholera used to be one of the most feared diseases in the world, _1_ a British doctor, John Snow, showed how it could be overcome. This illness causes severe diarrhoea, dehydration, and even death. In the early 19th century, when a
2、n outbreak of cholera hit Europe, millions of people died from the disease. As a young doctor, John Snow became frustrated because no one knew how to prevent or treat cholera. In time, he _2_(rise) to become a famous doctor, and even attended_3_ Queen Victoria when she gave birth. However, he never
3、lost his desire _4_ (destroy) cholera once and for all. In general, doctors in those days had two contradictory theories to explain how cholera spread. One theory was that bad air caused the disease. Another was that cholera was caused by an infection _5_ germs in food or water. Snow subscribed _6_
4、the second theory. It was correct, but he still needed proof. Consequently, when an outbreak of cholera hit London in 1854, Snow began to investigate. He discovered that in two particular streets the cholera outbreak was _7_ severe that more than 500 people died in ten days. He was determined to fin
5、d out _8_. Snow began by marking on a map the exact places _9_ all those who died had lived. There were multiple deaths near the water pump in Broad Street (especially house numbers 16, 37, 38, and 40). _10_, some households (such as 20 and 21 Broad Street, and 8 and 9 Cambridge Street) had had no d
6、eaths. These people worked in the pub at 7 Cambridge Street. They had been given free beer, and so had not drunk the water _11_ the pump. Snow suspected that the water pump was to blame. What is more, in another part of London, a woman and her daughter had died of cholera after moving away from Broa
7、d Street. It seemed that the woman liked the water from the pump so much that she had it _12_ (deliver) to her house every day. As a result of this evidence, John Snow was able to announce that the pump water carried cholera germs. _13_ (according), he had the handle of the pump removed so that it c
8、ould not be used. Through this intervention, the disease was stopped in its tracks.The truth was that the water from the Broad Street pump _14_ (infect) by waste. Moreover, Snow was later able to show a link between other cases of cholera and the different water companies in London. Some companies s
9、old water from the River Thames that was polluted by raw waste. The people who drank this water were much _15_ (likely) to get cholera than those who drank pure or boiled water. Through Snows _16_ (tire) efforts, water companies began to sell clean water, and the threat of cholera around the world s
10、aw a substantial decrease. However, cholera is still a problem. Each year, millions of people around the world get cholera and many die from it. _17_ (fortunate), we now know how to prevent cholera, thanks to the work of John Snow. Moreover, in his use of maps and statistics, Snow transformed the wa
11、y scientists study diseases. For this reason, Snow _18_ (consider) the father of modern epidemiology.(2)THE FATHER OF CHINAS AEROSPACEPerhaps no other scientist has had a greater impact _1_ Chinas aerospace science than Qian Xuesen. Described by the authors of the Story of Qian Xuesen as a man with
12、great scientific thought and scientific spirit who was patriotic and served his homeland with effort, achievement, and devotion, Qian was an _2_ (extreme) well-respected man.Born in Hangzhou in 1911, Qian attended schools in Beijing and then entered Shanghai Jiao Tong University to study Railway Mec
13、hanical Engineering. _3_, after the Songhu Battle broke out in 1932, Qian made the decision to switch his major to aviation because he realised that China needed its own powerful air force to protect and defend the country.Qian went to the United States in 1935 to pursue his graduate studies. Over t
14、he course of the 1930s and 1940s, Qian became a pioneer in American jet and rocket technology. _4_ a graduate assistant at the California Institute of Technology during the 1930s, Qian helped conduct important research into rocket propulsion, and in the 1940s, he and several other people _5_ (found)
15、 the Jet Propulsion Laboratory, now one of NASAs leading space-exploration centres. After overcoming some difficulties during his final few years in the US, Qian returned to China in 1955. He received a heros welcome from his homeland and was put _6_ charge of not only developing Chinas rocket science but also its space and missile programme. At that time, China was poor and its rocket science was undeveloped. No institute or university in China _7_ (offer) rocket science as a major, and there were no ta
