问题
选择题
We still remember our teacher's wishes during the graduation ____.[ ]
A. ceremony
B. education
C. absorption
D. sign
答案
答案：A
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We still remember our teacher's wishes during the graduation ____.[ ]
A. ceremony
B. education
C. absorption
D. sign
答案：A
覆盖深，采用直丝弓拔牙矫治，为尽量内收上前牙，关闭上颌间隙最好使用（）