问题
选择题
Henry is a good runner. He runs _______ than his friends. [ ]
A. fast
B. faster
C. slower
D. slowest
答案
答案：B
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Henry is a good runner. He runs _______ than his friends. [ ]
A. fast
B. faster
C. slower
D. slowest
答案：B
5mm，覆盖9mm，磨牙远中咬合关系，上前牙拥挤明显，ANB为10°，SNA为84．5°，X线片显示4个第三磨牙存在，下颌无拥挤，Spee曲线深