[填空题]
阅读下面的短文，文章中有5处空白，文章后有6组文字，请根据文章的内容选择5组文字，将其分别放回文章原有位置，以恢复文章原貌。

{{B}}Looking to the Future{{/B}}
When a magazine for high-school students asked its readers what life would be like in twenty years, they said: Machines would be run by solar power. Buildings would rotate so they could follow the sun to take maximum advantage of its light and heat. Walls would "radiate light" and "change color with the push of a button." Food would be replaced by pills.{{U}} (1) {{/U}}. Cars would have radar. Does this sound like the year 2000 {{U}} (2) {{/U}}.
The future is much too important to simply guess about, the way the high school students did, so experts are regularly asked to predict accurately.{{U}} (3) {{/U}}. But can they One expert on cities wrote: cities of the future would not be crowded, but would have space for farms and fields. People would travel to work in "airbuses",. large all-weather helicopters carrying u