问题
选择题
—When were you born?
—I was born ________August lst, 1994. [ ]
A. in
B. at
C. on
答案
答案：C
搜题请搜索小程序“爱下问搜题”
—When were you born?
—I was born ________August lst, 1994. [ ]
A. in
B. at
C. on
答案：C
颊侧龈肿，肿胀突出，半球样，龈充血，表面光亮，自觉搏动痛，扪软而有波动，指压龈向内溢脓，牙松动明显，及龈袋超过5mm，无龋，最可能的引起原因是（）