---Kate, _______?

---Junk food? Oh, I hardly ever eat it. You know, it’s unhealthy.

A．what would you like to eat

B．how soon will you eat junk food

C．how often do you eat junk food

D．what is junk food

下列哪项不是急性龋的特点（）

A.多见于青少年

B.质软而湿

C.病变组织颜色浅

D.病变进展快

E.病变组织颜色深、质地硬