下面符合慢性扁桃体炎病理改变的有（）。

A.隐窝粘膜受损，上皮增厚或形成小溃疡

B.上皮细胞、渗出物、白细胞、细菌等混合成干酪样物

C.干酪样物向隐窝口排出

D.溃疡愈合，形成瘢痕

E.淋巴组织异常增生

Which of the following statements is NOT true regarding arrow digramming method ？（）

A．Schedule activities are represented by arrow

B．The length of the arrow represents the expected duration of the activit

C．The tail of the arrow represents the start of the activit

D．The head of the arrow represents the finish of the activit