阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。续写的词数应为150左右。

I have seen amazing things.

My first visit was to a space station considered the most modern in space. Described as an enormous round plate, it spins slowly in space to imitate the pull of the earth’s gravity. Inside was an exhibition of the most up-to-date inventions of the 31^st century. A guide showed us around along a moveable path.

Guide: Good morning to all our visitors from 2008. First we’re going to examine one of the latest forms of communication among our space citizens! Messages can now be sent using a “thoughtpad”. You place the metal band over your head, clear your mind, press the sending button, think your message and the next instant it’s sent. It’s stored on the “thoughtpad” of the receiver. It’s quick, efficient and environmentally friendly. The only limitation is if the user does not think his or her message clearly, an unclear message may be sent. But we cannot blame the tools for the faults of the user, can we?

During the explanation I looked at the pair of small objects called “thoughtpad” on a table. They just looked like metal ribbon. So ordinary but so powerful! While I was observing them, the path moved us on.

Guide: And now ladies and gentlemen, we are in the “environment area”. People used to collect waste in dustbins. Then the rubbish was sent to be buried or burned, am I right?（We nodded.）Well, now there’s a system where the waste is disposed of using the principles of ecology. A giant machine, always greedy for more, swallows all the waste available. The rubbish is turned into several grades of useful material, such as “fertilizer” for the fields and “soil” for deserts. Nothing is wasted, and everything, even plastic bags is recycled. A great idea, isn’t it?

I stared at the moving of the waste machine, absorbed by its efficiency. But again we moved on.

Part 1

Our third stop shows the changes that have happened to work practices. Manufacturing no longer takes place on earth but on space stations like this one.

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Part 2

My mind began to wander. What job would I do? My motivation increased as I thought of the wonderful world of the future.

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