25. They will ________(大概) give us the correct answers.

24. On October 12th,2005, two ________(宇航员) went into space by Shenzhou VI.

23. There are nine ________(行星)in the universe.

22. Before the Project of Sanxia, many ________ (移民)left their hometown.

21. People must wear space________(宇航帽) to go outside on Mars.

15．电子狗___________________　　　 20.space food___________________

14．飘走___________________　　　　 19. power pack___________________

13．将来___________________　　　　 18.the public transport system___________________

12．越来越拥挤___________________　 17.many different designs___________________

11. 呈……的形状___________________ 16.virtual reality___________________