胃、十二指肠溃疡手术治疗的适应证应除外（）

A.急性穿孔

B.并发大出血

C.并发瘢痕性幽门梗阻

D.癌变

E.经常反酸

— Tom prefers ______ to ______.

— Let's ask him to take part in our dancing club. [ ]

A. to sing; dance

B. to dance; sing

C. singing; dancing

D. dancing; singing