阅读下列短文，然后按短文后的要求完成所给出的题目。

根据短文内容完成句子。

1. If you are in space, you can see ________ sunrises and sunsets in a whole day.

2. Some astronauts think ________ is the most fun thing to do during their free time.

3. Astronauts have to attach their sleeping bag to the wall, or they will ________.

4. Astronauts often ________ during their free time.

5. 将文中划线的句子翻译成汉语。

下列关于泡沫消火栓的安装要求，说法错误的是（）。

A.室内泡沫消火栓的栓口方向宜向下或与设置泡沫消火栓的墙面成90°

B.地上式泡沫消火栓要垂直安装，地下式泡沫消火栓要安装在消火栓井内的泡沫混合液管道上

C.地上式泡沫消火栓的大口径出液口要朝向消防车边，以便于消防车或其他移动式的消防设备及液口的安装

D.地下式消火栓顶部与井盖底面的距离不大于0.5mm，且不小于井盖半径