颗粒状白斑多见于()
A.口角区粘膜
B.软腭咽部
C.舌背咽部
D.口底舌腹
E.牙龈
参考答案:A
__________ golf was first played in Scotland in the 15th century is generally agreed.
A.Whether
B.Why
C.That
D.What
维生素D治疗佝偻病的剂量应为()
A.依病情不同而剂量不同
B.不同病期,剂量相同
C.先用小剂量,逐渐加大剂量
D.剂量越大越好
E.剂量越小越安全