43 , 54 , 76 , 120 , ()
A . 180
B . 198
C . 200
D . 208
14 20 54 76 ()A.104 B.116 C.126 D144
:14 20 54 76 () A.104B.116C.126D144
43,54,76,120,() A.180 B.198 C.200 D.208
20,54,76,()A.104B.116C.126D.144
20,54,76,()A.104 B.116 C.126 D.144
龋齿最好发于()A.76 67B.76 67C.54 54D.54 45E.2 2