A.The pianist is an old friend of hers.
B.Many people have come to the presentation.
C.The auditorium has an excellent sound system.
D.She enjoys going to concerts.
第5题
下列哪种药物不宜单独用于治疗嗜铬细胞瘤
A、阿替洛尔
B、酚妥拉明
C、酚苄明
D、哌唑嗪
E、硝普钠
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