1. If you decide to take a space trip, you will have to run a lot, swim every day, and do aerobics and push - ups to have an excellent physical condition.

2. If you want to show you are in perfect health, you must get a letter from the doctor.

3. You can see pictures of the earth: your country, interesting places, the oceans, the big rivers, the tall mountains and the whole Great Wall of China from the outer space.

4. We can see those scenes 16 times a day.

5. We can walk on the walls or on the ceiling.

6. If I were able to take a space trip, I would do exercises to prepare for the trip. I would like to bring along a camera.