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【单选题】
牙齦结缔组中可见大量幼稚的白细胞,应考虑为()A.
急性坏死性溃疡性龈炎
B.
遗传性牙齦纤维瘤病
C.
维生素C缺乏性龈炎
D.
炎症水肿型慢性龈炎
E.
白血病性龈增大增
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反馈参考答案：
举一反三
【简答题】B It was 1961 and I was in the fifth grade. My marks in school were miserable and, the thing was, I didn’t know enough to really care. My older bother and I lived with Mom in a dingy multi-family hous...
【单选题】The fifth thing is _______. You should think it is a privilege for you to serve as a doctor, a lawyer, a teacher, or whatever you do. Try to serve others something of value.
A.
persistence
B.
passion
C.
ideas
D.
service
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