出现口腔粘膜粗涩感的疾病是（）
A.唇疱疹
B.疣状白斑
C.白色念珠菌病
D.李-弗氏口疮
E.白塞病
参考答案：B
Leonardo da Vinci(1452 - 1519) birds kept in cages in order to have the pleasure of setting them
free. [ ]
A. is said to be buying
B. is said to have bought
C. had said to buy
D. has said to have bought
脱水作业一般包括浓缩、过滤或干燥过程。
