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【多选题】
患者女性．13岁．主诉：要求矫治牙齿前突，既往有口呼吸习惯，家族中无类似错．检查：恒牙列，牙列式为6-6，双侧第一磨牙中性关系，前牙覆达到1/3牙冠高度，前牙覆盖为4mm，上下牙列拥挤，正面观：左右对称；侧面观：双颌前突，颞颌关节未见异常。使用弓矫治技术关闭拔牙间隙时，容易出现哪些异常情况（）。A.
前牙唇顿
B.
前牙舌顿
C.
前牙覆合加深
D.
前牙覆合变浅
E.
支抗磨牙近中顿斜
F.
支抗磨牙远中顿斜
G.
支抗磨牙颊移位
H.
支抗磨牙舌移位
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反馈参考答案：
举一反三
【单选题】第5题: What advice does the author give to college students?
A.
Seize opportunities to tap their potential.
B.
Try to take a variety of practical courses.
C.
Prepare themselves for different job options.
D.
Adopt a flexible approach to solving problems.
【简答题】让他热( )( )( )
【单选题】We should throw the rubbish into the dustbin ______ protect our environment.
A.
as a result
B.
so that
C.
in order to
D.
in order not to
【单选题】He spoke so quickly that I didn‘t________ what he said.
A.
receive
B.
accept
C.
listen
D.
catch
【单选题】Waste paper mustn’t _______. We should keep our environment clean.
A.
throw away
B.
thrown away
C.
be thrown away
D.
been thrown away
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