45. Visiting a museum, you can find all of the following signs except______

44. The environment in our hometown is ______ than it was before.

　　 A. good　　　　　 B. worse　　　　　 C. better　 　　　　D. bad

43. Oh, you bought a secondhand ear. How much did you ______　 for it?

　　　 A. spend　　　　 B. pay　　　　　　 C. take　　　　　　 D. use

42. Let's plant more trees to stop the sand ______ towards the rich farmland.

　　　 A. from blowing　 B. from moving　　 C. running　　　　 D. leaving

41. Mike is ______. He doesn't want to share (分享) things with other people.

　　　 A. grateful to others　　　　　　　　 B. only thinking of others

　　　 C. afraid of others　　　　　　　　　 D. only thinking of himself

40. -- Could you tell me ______ you'll be away?

　　　 -- About two weeks.

　　　 A. how long　　　 B. how far　　　　 C. how often　　　 D. how many

39. I'd like to watch an NBA game. Would you please______ the TV?

　　　 A. turn off　　　 B. turn down　　　 C. turn on　　　　 D. turn over

38. He didn't know the news______ his parents told him about it.

　　　 A. when　　　　 B. after　　　　　 C. as soon as　　 D. until

37. I don't know______ on a trip to Canada.

　　　 A. if he goes　　 B. when will he go C, if he'll go　　 　D. when he goes

36. Your　 skirt looks nice, Is it ______ cotton?

　　　 A. made in　　　 B, made of　　 C. made from　　 D. made by