Unit 2 Out of This World Reading 同步练习-2023-2024学年高二下学期英语牛津译林版（2020）选择性必修第三册

U2 Reading 1 学习目标： 1、题型训练 2、能力提升 学习流程及内容： 1. Leading – in 2. Discussion 3. Assessment 4. Checking Step1导：（3分钟) 根据答题卡的数据，老师点评学案答题情况 Step 2议：(7分钟） Step 3展：（20分钟） Step 4 评：(7分钟 老师评价和补充） Step 5 测：（3分钟） 巩固讲解中出现的重点词汇短语（以个人二备为主） 一. 阅读理解 A What do Neil Armstrong, Ed White and today's astronauts have in common? They all wear a white spacesuit. Beyond NASA, space programmes in countries like Russia and China also use white suits. This basic colour has saved countless astronauts' lives. NASA didn't always have white spacesuits. Their very first manned spaceflight, Project Mercury, used silver suits, but none of those astronauts actually explored the vacuum(真空)of space. And that's the key because out there, spacesuits have to be highly reflective. And the best colour for that isn't silver, but white. Here on Earth, our atmosphere protects us from 77% of the sun's radiation. But astronauts in space don't have that natural protection, making them easily hurt by extreme temperatures, severe sunburn, and even cancer-causing cell damage. So to prevent that, they wear white suits that reflect the sun's harmful radiation. But those white suits aren't the only garments in an astronaut's closet. When heading into space or coming home, NASA astronauts wear a bright orange suit similar in colour to the safety vests Air Force pilots wear, and it's for similar reasons that loud orange stands out against the blue ocean and sky and is perfect for attracting attention. That being said, times are changing. Nowadays we have more ways of finding out astronauts in need of rescue like GPS, so space agencies are now free to get creative with their colour choices. NASA and other programmes are already starting to use other colours like deep blue and mustard yellow. In the future, they could look a lot different because NASA is heading to Mars. It will be the longest crewed space mission to date, taking as long