Ⅰ、1、 low-gravity basketball games
2、 a guide to
3、a very popular form of entertainment
4、 make us feel like. ..
5、goods from the Earth
6、the public transport system
Ⅱ、1-5 BCBAD
6-10 BDACA
Ⅲ、1-5 BCBAC
Ⅳ、 One possible version:
Life on Mars
In the future, we can travel to Mars by space shuttle which travels at half the speed
of light. We can live on Mars because scientists develop plant grow on Mars and can produce foot, oxygen and water. The gravity on Mars is only three-eighths of the gravity on Earth, so we should wear special boots to make ourselves heavier.
On Mars, we will have more space and more free time, so we can live m a dome with many bedrooms and have more time for hobbies. Students on Mars can study at home on the interplanetary computer network.
But the food on Mars will not be as tasty as they are on Earth, and the journey to Mars will probably be very uncomfortable.