二、阅读还原
阅读短文，从方框中选出最佳选项填入对应的空白处，使短文通顺、意义完整。选项中有一项为多余选项。
April 24th is a special day, Space Day of China. It is honoured to celebrate the country's development in space exploration. The manned space missions are a big part of it.
1.
What problems do astronauts meet?
Astronauts may face many challenges in space. There is low gravity（重力）there, which affects their bodies. 2. What's more, if something goes wrong on their mission all of a sudden, they have to work out how to fix it under huge pressure. That's why astronauts have to be smart, strong, and ready for any challenge before they can go to space.
3.
"To make sure that Chinese astronauts complete their missions and return to Earth safely, over 200 kinds of training are set, " said Huang Weifen, the chief designer of the project. 4. So before astronauts can go to space, they train like this for at least three and a half years.
5. This helps them get ready for the weightless environment in space. Huang explained that astronauts wear diving suits that weigh more than 100 kilograms and stay underwater for six hours at a time. She said that it was quite hard. For example, Nie Haisheng even lost 2 kilos after an underwater training.

1. C 2. E 3. A 4. F 5. D

【分析】
做阅读还原题时，需结合上下文的语境和逻辑关系选择合适的句子。第1空后围绕宇航员面临的问题展开，前面需先引出宇航员的相关情况；第2空需补充前文提到的太空挑战，形成递进关系；第3空需引出下文关于宇航员训练的内容；第4空需承接上文提到的训练种类，说明训练的具体内容；第5空需引出下文关于水下训练的话题，结合这些逻辑逐一匹配选项即可。
【解析】
1. 第1空：下文围绕“宇航员遇到的问题”展开，C项“成为宇航员既令人兴奋又困难”总起，引出后续关于挑战的内容，故选C。
2. 第2空：前文提到太空低重力对身体的影响，后文讲其他压力，E项“长期待在狭小的太空船里会让他们感到压力大”补充另一个挑战，符合递进逻辑，故选E。
3. 第3空：下文介绍宇航员的训练情况，A项“宇航员是如何训练的”引出训练话题，故选A。
4. 第4空：前文提到有200多种训练，F项“这些训练不仅包括体能训练还有基础科学训练”承接上文说明训练的具体内容，故选F。
5. 第5空：后文详细介绍水下训练的细节，D项“训练中最难的部分之一是水下训练”引出水下训练的话题，故选D。
【答案】
1. C 2. E 3. A 4. F 5. D
【知识点】
阅读还原、语篇逻辑衔接
【点评】
本题考查学生对语篇上下文逻辑的理解能力，需结合前后文语境匹配合适的句子，是初中英语常见的阅读题型，难度适中。
【难度系数】
0.6