寻常型银屑病组织病理改变主要是()。
A.角化不全
B.角化过度
C.角化不良
D.棘细胞变薄
E.颗粒层增厚
参考答案:A
—Your classroom is really bright and clean.
—It _____ after school every day. [ ]
A. is cleaned
B. cleaned
C. was cleaned
淋巴系统的主要生理功能为( )。
A.免疫功能
B.协助体液回流
C.营养功能
D.呼吸功能
E.交换功能