选择性必修第二册之课文素材精编 语法填空竞赛-2020-2021学年高二英语新教材知识讲学(人教版选择性必修第二册)

【新教材精创】-学年高二英语新教材知识讲学(人教版选择性必修第二册) 全册课文素材精创语法填空竞赛 （一） Cholera used to be one of the most feared__________ (disease) in the world. In the early th century, __________ an outbreak of cholera hit Europe, millions of people died. But _________its cause, nor its cure was understood. A British doctor, John Snow, wanted to solve the problem and he knew that cholera would not be controlled __________. its cause was found. In general, there were two contradictory theories __________ explained how cholera spread. The first suggested that bad air caused the disease. The second was that cholera was caused by an __________(infect) from germs in food or water. John Snow thought that the second theory was correct ____________ he needed proof. So when another outbreak of cholera hit London in 1854, he began to investigate. Later, with all the evidence he __________ (gather), John Snow was able to announce that the pump water carried cholera germs. ______________, he had the handle of the pump __________ (remove) so that it couldn't be used. _____________ his intervention，the disease was stopped in its tracks. What is more, John Snow found that some companies sold water from the River Thames that ____________________ (pollute) by raw waste. The people who drank this water were much more likely __________ (get) cholera than those who drank pure or boiled water. Through John Snow's efforts, the __________ (threaten) of cholera around the world saw a substantial increase. (二) When Qian Xuesen was young, he realized China needed air force __________ (defend) the country, so he went to America to study aviation. __________ a graduate assistant at an institute, he helped conduct important research __________ rocket propulsion. Finally, he became a pioneer in jet and rocket technology. __________ Qian Xuesen returned to China in , he was put __________ charge of developing China's rocket science, space and missile programme. Under his __________________ (leader), China made outstandin