英語(yǔ)四級(jí) 學(xué)英語(yǔ),練聽(tīng)力,上聽(tīng)力課堂! 注冊(cè) 登錄
> 英語(yǔ)四級(jí) > 四級(jí)改錯(cuò) >  內(nèi)容

英語(yǔ)四級(jí)改錯(cuò)預(yù)測(cè)練習(xí)題及答案二

所屬教程:四級(jí)改錯(cuò)

瀏覽:

手機(jī)版
掃描二維碼方便學(xué)習(xí)和分享

Some people, in all seriousness, say that humans will be living in space within the next hundred or so years. Planet Earth will be crowded, dirty and lack of resources. A sort of exodus [51] of mankind will begin.

Spaceships will be assembled so that they revolve around the earth. Some may orbit around Mars. These space stations will be serviced by space buses. We saw the first space bus launch in [52] April 1981. This was ""Columbia"", it made several [53] orbits around the earth and then returned, landing on a huge dry lake bed in California. ""Columbia"" will be used again. Previous spaceships have been abandoned, only the nose being used to bring the crews back to earth.[54]

Upon established, each space station will [55] generate its own atmosphere and have its own agriculture. It will need to rotation to provide [56] an artificial gravity; people will be forced inwards [57] from the centre by centrifugal force.

The moon and Mars could become new sources of new materials. Driving through space will no [58] longer need Earth fuel - the energy would come from the sun. This energy would be converted from [59] electricity to work magnetic rockets.

That all sounds quite fantastically but, with [60] the rapid development of modern technology, who knows about what the future holds?
 

答案

用戶(hù)搜索

瘋狂英語(yǔ) 英語(yǔ)語(yǔ)法 新概念英語(yǔ) 走遍美國(guó) 四級(jí)聽(tīng)力 英語(yǔ)音標(biāo) 英語(yǔ)入門(mén) 發(fā)音 美語(yǔ) 四級(jí) 新東方 七年級(jí) 賴(lài)世雄 zero是什么意思東營(yíng)市辛鴻家園英語(yǔ)學(xué)習(xí)交流群

  • 頻道推薦
  • |
  • 全站推薦
  • 推薦下載
  • 網(wǎng)站推薦