SITTING at the dinner table and sleeping in bed is normal fo

SITTING at the dinner table and sleeping in bed is normal for you.How is an astronaut's life aboard Shenzhou VI different from yours?
Eating:Astronauts in a spaceship face the following choices beacuse of no gravity.They may pick their food with their hands and put it into thrie mouths.Or they may let the food stay in the air.Then they float to the food and get it with their mouths.Astronauts have to remember to close their mouths tightly when eating.Any crumbs could cause big problems.Bits of food that stay in the air can go into astronauts'noes when they are breathing.
Sleeping:Shenzhou VI astronauts sleep on the wall of the spaceship.People float in a spaceship where there's no gravity.So scientists fix sleeping bags to the wall to help astronauts get a sound sleep.Can they move any way they like?No!
根据短文内容回答下列各题：
1.Is an astronaut's life different from yours?
2.Why can the astronauts float to the food in the air?
3.How should the astronauts close their mouths when eating?
4.Where do Shenzhou VI astronauts sleep?
5.Why do the scientists fix sleeping bags to the wall?