I don't know how _____ read it. [ ]
A. to
B. is
C. has
D. have
A
宰杀牛蛙时可以先用刀背击昏,再用竹签沿()部位捅一下,可使其迅速死亡。
A、头部
B、心脏
C、颈喉
D、脊髓
顾客()是组织内部的。