Unit 541. She prefers pop music and jazz to c_ music.42. He is a pianist in an o_.43. A m_ is a person who performs or writes music, especially as his/her job.44. The teacher c_ her hands to attract the classs attention.45. They can manage it themselves. I dont suppose they wanted any e_ help.46. Bright colors are a_ to children.47. Your compass and clock are the most essential (必要的) i_ in sailing.48. The group of popular singers will give another two p_ before leaving China.49. Thanks to his a_, he has obtained great success.50. Cheating at the game ruined that players r_.
