Unit 4 课文填空与翻译学案-2021-2022学年高中英语人教版（2019）必修第三册

Unit4 Space Exploration Unit4 Reading and Thinking (P40) SPACE:THE FINAL FRONTIER  “Are we alone? What's out there? " 1.________(look) up at the stars, people have always wanted to learn more about space, and scientists work hard 2._________(find) answers. They make 3._________(交通工具；车辆) to carry brave people into space 4.________(find) out 5.______ ________ ____ ______ _____________ (宇宙的奥秘). They also really wish to discover other planets that are suitable enough 6._________(support) life. Before the mid-20th century, most people felt 7._________(travel) into space was an impossible dream. However, some scientists were 8.___________(有决心的；一直坚定的) to help humans realize their dream 9._________(explore) space. After many experiments, they succeeded 10. making rockets that could escape Earth's gravity. On 4 October 1957, the Sputnik I 11.___________(人造卫星；卫星) 12.______________(发射) by the USSR and successfully 13.___________(环绕轨道运行) around Earth. Afterwards, the USSR focused on sending peo