Unit 1 Science and scientists 单词练习课件-2023-2024学年高中英语人教版（2019）选择性必修第二册

人教选二Unit 1 Science and scientists learn the words in the passage Since the severe COVID-19 broke out , many people all over the world have been infected. Chinese outstanding, gifted and patriotic specialists in epidemiology and their assistants have been in charge of tracing the source of the virus in order to defend more people from being killed. They desired to produce vaccine to handle the deadly disease once and for all. Initially, with concrete proof collected, they suspected that wild bats were to blame. But by observaing the virus with microscopes, they gathered solid and multiple statistics and mastered the framework of the virus, which gradually transformed their intial contradictory thinking. All the findings made them suscribe to the idea that the virus was not directly linked to the bats, which made the brilliant experts frustrated. This also cast a shadow on the experts, so they had to shift towards how to prevent the virus from spreading among people. Above all, the less we go out, the less likely we will come down with the deadly disease. Furthermore, taking in more protein and eating more vegetables are good choices as well. Last but not least, what we should do is that we must wear masks outdoors. Thanks to these interventions, the threat of COVID-19 in China saw a susbtantial decrease. What we have experienced has taught us to lead a healthy life such as drinking pure or boiled water and avoiding raw food. In conclusion, under our motherland`s leadership, we have achieved steady success, tears of happiness pouring down our cheeks. practice again 1 cholera 2 diarrhoea 3 dehydration 4 contradictory 5 germ 6 pump 7 water pump 8 household 9 raw 10 statistic 11 epdemiology 12 microscope 13 protein 14 cell 15 virus 16 vaccine 17 framework 18 theoretical framework 19 rainbow 20 concrete 21 plasma 22 aerospace 23 patriotic 24 mechanical 25 mechanic 26 aviation 27 jet 28 missile 29 astronomy 30 telesco