问题
选择题
When I was young, I have so much time, but these days I in school all day. [ ]
A. use to, stay
B. used to, stayed
C. used to, stay
D. use to, stayed
答案
答案：B
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When I was young, I have so much time, but these days I in school all day. [ ]
A. use to, stay
B. used to, stayed
C. used to, stay
D. use to, stayed
答案：B
松动Ⅱ度，龈袋溢脓，白细胞总数18×109/L，中性粒细胞90%。最可能的诊断是（）