24. A.moon 　 　B.star 　　C.earth　 　 D.sun

23. A.Americans　 　 B.Englishmen　 　 C.Australians　 　ese

22. A.small　 　B.smaller　 　 C.big　　　D.bigger

21. A.or　　B.but　　　C.and　　　D.then

20. A.their　 B.them 　　C.they　　 D.theirs

19. A.itself　B.ourselves 　 C.oneself　 　 D.themselves

18. A.too 　　B.already 　 C.again　 　 D.badly

17. A.how 　　B.what 　　C.when　 　D.which

16. A.is　　B.are　　 　 C.was 　 　D.were

12.　 A. wearing　　　 　　 B. inventing 　　　　　　　　 C. making　 　　　　　　 D. buying

Last Wednesday, Mr. Chen took his class to the Space Museum. There _16_ many things about space there. First, the children saw a film about space travel. They saw _17_ the space shuttle (航天飞机) took off in space and later landed on earth _18_. It was very exciting and the children felt they were traveling in space _19_!

　After the film, Mr. Chen took _20_ to see some models of rockets (火箭) _21_ the space shuttle. The models looked very real, but they were much _22_ . Then the children saw some moon rocks (岩石). Two _23_ landed on the moon in 1969. They put an American flag (旗) there. Then they took some rocks back to the _24_ .

　_25_ the children left, they also watched a video show about people living and working in a space lab. The people could stay in the space lab for months.