人体内最大的腺体是 [ ]
A．胃腺
B．唾液腺
C．肝脏
D．肠腺
答案：C
拔牙创处理，下列哪些是错的（）
A.拔除乳牙残根后应进行彻底勺刮牙槽窝
B.扩大的牙槽窝要压迫复位
C.与骨膜、牙龈相邻的骨折片应给予复位
D.撕裂的龈组织要复位、缝合
E.拔牙创口内的碎牙片、结石、肉芽要刮除
Our flight to Guangzhou was ______ by a bad fog and we had to stay much longer in the hotel than we had expected.
A．delayed
B．adjourned
C．cancelled
D．preserved
