以下不属于慢性龋的临床表现的是
A．只见于成年人B．病变进展慢C．病变组织色深而干硬D．色素渗透超过细菌入侵层E．去腐时不易大块去除
参考答案：A
Once a decision has been made, all of us should ________ it.[ ]
A. direct to
B. stick to
C. lead to
D. refer to
透骨搜风散功效与作用
