Shave, read, understand and answer.

1. In space, shaving is not easy, and it is a waste of time. I will squeeze a small amount of water into my face. Surface tension and my stubble make water stick to my face. I will add a little shaving cream called "space razor" made by NASA to the water. Every time I shave, the mixture of shaving cream and beard will temporarily stick to the blade until I put it on a dirty towel that has been used for a week. Every time you put it, you roll a towel to catch it and throw it away.

Because it takes too much time, I choose to shave once a week, that is, every Sunday morning. I don't have a beard, because if I need to wear a gas mask in an emergency, the beard may hinder the sealing of the full face mask. Shaving once a week has become a way of timing. If I catch a glimpse of a messy face in the mirror, I know it's Friday or Saturday, and I survived another week.

My bed is a wall behind the paranormal capsule, and there is a ventilator on the opposite floor. Because hot air does not rise in space, there is no air convection here, and fans are the only way to make air flow.

Sleeping in a place with insufficient ventilation is likely to breathe in a hood with insufficient oxygen and too much carbon dioxide. The result will be hypoxia and hyperventilation. People wake up with a severe headache and try their best to inhale.

For this reason, I sleep upside down on the wall facing the running fan, and use bungee cord or nylon wallet to prevent myself from drifting away at night. I have seen other astronauts floating around in their sleep-they float around the spacecraft at night and usually wake up when they hit the suction side of the filter.

So, I lived in space for five months. Although it is inconvenient, there is nothing pleasant, and I am not bored. I remember when I was a little boy, I often groaned and complained in the shower at night. In this sense, I think the space station is a paradise for children. In addition, untidy, unshaven and even a little messy, it seems to be very suitable for space exploration. After all, we are adventurers on the front line, too busy to care about our appearance and smell.

Question 1: The first five paragraphs in the selected text mainly explain _ _ _ _ _ _ _ _.

Question 2: Can the word "unique" in the sentence "Fan is the only way to make air flow" be removed? Why?

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Question 3: Why do you sleep in a space capsule with your head pointed at the running fan?

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Question 4: Use your knowledge of physics to talk about why some astronauts drift around when they sleep.

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Question 5: What does the last paragraph have to do with the above? What role does it play in the full text?

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Question 6: What kind of space life is "just like this" in the last paragraph "I lived in space for five months like this"? Please contact the full text for a little review.

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Question 7: According to the author, what are the characteristics of life in space? The summary shall not exceed 10 words. What do you think of life in space?

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Question 8: "After all, we are front-line adventurers, too busy to care about our looks or smells." What kind of spirit do you think astronauts have after reading this sentence?

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Question 9: Do you want to be a space explorer? If yes, what conditions do you think should be met?

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Question 1: Shave and sleep in the space capsule.

Question 2: No, because "uniqueness" emphasizes the role of fans. If it is removed, it will have no such meaning.

Question 3: "Because hot air does not rise in space, there is no air convection here. Fans are the only way to make air flow." If you don't point at the fan, "it will lead to hypoxia and hyperventilation."

Question 4: Because space is a place with very little gravity, astronauts are weightless in space, so if they don't sleep with a fixed body like a rope, they may "float around" in the cabin.

Question 5: It's the total score relationship, that is, say it first and then always say it.

Question 6: As can be seen from the last sentence, "That's it" refers to my living condition in space. Physical changes, dressing, washing and sleeping are inconvenient and unbearable for a long time.

Question 7: Long, difficult, fearful and unable to adapt. This is a life full of difficulties and challenges.

Question 8: It is a sense of responsibility and mission. There is a challenge and dedication.

Question 9: Omission.