83. The long question has been ___________(简化) so that the students can understand it easily.

82.The male bird has _________ (与众不同) black and white marking on its head.

81.The poor quality of their milk powder has destroyed their _________(声誉).

60. A. unfair　　　　 B. paid　　　　　　 　　 C. stupid　　　　　 　　 D. given

59. A. experience　　　 　　　 B. position　　　　 　　 C. quality　　　 　　　 D. conversation