Unit 4 Space exploration 语法填空-2022-2023学年高一英语人教版（2019）必修第三册

必修三 Unit 4 Space exploration语法填空 Space : The Final Frontier _________(Look) up at the stars, scientists want to learn more about space. They make vehicles to carry brave people into space to find out the secrets of the universe. They also wish to discover other planets that are____________ (suit) enough to support life.  Before the _____________(twenty) century, most people felt ____________ (travel) into space was an impossible dream. _____________, some scientists were determined to help humans realize their dream. After many experiments, they succeeded in making rockets _____________ could escape Earth’s gravity. It was on 4 October 1957, _________ the Sputnik 1 satellite was launched and successfully orbited around Earth. Afterwards, the USSR focused ________ sending people into space, and Yuri Gagarin became the first person in the world __________ (go) into space. Over eight years later, American astronaut Neil Armstrong _________(step) onto the moon, famously __________(say), “ One small step for a man, one giant leap for mankind.” ___________(Follow) this, many more goals were achieved. America’s NASA space agency launched Voyager 1 to study deep space, which is still used for __________ (transmit) data today.  ____________ scientists try to make sure nothing goes wrong, accidents can still happen during the missions. These disasters made everyone sad and disappointed, but the desire that the universe_________________ (explore) never died. This is ___________ people believe in the importance of carrying on space exploration despite the huge risks. The International Space Station orbits Earth and has astronauts from different countries on board, _____________ (provide) a continuous human __________ (present) in space.  China’s space program started later than __________ of Russia and the US, but has made great progress in a short time. It was in 2003________ Yang Liwei successfully orbited Earth in the Shenzhou 5 spacecraft that China became the third count