As you may expect, life in space is much different from life on earth. So of course people need some time to get used to it. How do they live, work and play up there?
Space food keeps getting more like the food we eat at home on the earth. In the past, astronauts could eat only freeze-dried food. But now the space station has water, microwave ovens and fridges. So astronauts can eat more usual kinds of food, like fruit, vegetables and ice cream!
All people in the ISS（国际空间站）have their own rooms. There’s no gravity, so they have to attach themselves to their beds, or they’ll float away! That may seem like a hard way to sleep, but astronauts say that sleeping in space is actually not too bad.
This is more important in space than on Earth. There’s not much gravity in space. Astronauts don’t stand up, sit down or walk in space, so their muscles don’t have to work much. They exercise on bikes and other machines for about two hours every day while they’re in space. In this way, they can still keep strong and healthy when they get back home.
Easy things like brushing your teeth can be hard in space with low gravity. Water doesn’t flow out of a tap, it floats in a bubble（水泡）! Astronauts used a special hose（软管）to take showers. And when they’re finished, they use a vacuum（真空的）hose to suck the dirty water off of their bodies. How do you go to the toilet in space? They use a special “air toilet”. It uses air, not water, to take everything away.
What do astronauts do when they aren’t working? They read books, play cards, listen to music or send e-mail to their friends and family. Sometimes they just sit and look out the window. Doesn’t sound like much fun? But what if you could see planet Earth out of your window, with a sunset or sunrise every 45 minutes?
1． Which of the following can be the title of this passage?
A. Life In Space.    B. Space Food.      C. Showers In Space.     D. A Visit To Space
2．From this passage we know that _______.
A. astronauts eat quite different food in space from what they eat on the earth
B. astronauts ate only fruit in space in the past
C. astronauts can only eat freeze-dried food now
D. astronauts can only eat fruit and vegetables now
3．Astronauts attach themselves to bed so as to ________.
A. keep themselves warm                                 B. prevent themselves from floating away
C. have a good sleep                                         D. feel better
4．Astronauts have to do exercise for two hours every day because ________.
A. they have nothing to do in space             B. they are told to do so
C. they do so to keep healthy                      D. they do so to prevent them from sleeping
5．From the last paragraph we can guess that ________.
A. the sun moves fast around the earth 
B. the earth circles round the sun very fast
C. the earth is very small
D. the spaceship circles round the earth once every 90 imnutes