It _____ belong to Alice. She plays the guitar. (可能……) [ ]
A. can't
B. must
C. could
答案:C
单房性透光阴影,局部有残根()
A.根尖周囊肿
B.含牙囊肿
C.始基囊肿
D.成釉细胞瘤
E.角化囊肿
受理注册申请的食品药品监督管理部门应当自收到审评意见之日起()个工作日内作出决定。
A.10
B.15
C.20
D.25