试题与答案

患者男,15岁,凸面型,鼻唇角正常,面下1/3短,磨牙远中关系,尖牙远中关系,前牙Ⅲ

题型:单项选择题 共用题干题

题目:

患者男,15岁,凸面型,鼻唇角正常,面下1/3短,磨牙远中关系,尖牙远中关系,前牙Ⅲ度深覆,覆盖1mm,上前牙直立,上颌拥挤5mm,下颌拥挤7mm,ANB5度,左侧上下第二磨牙锁猞

治疗时加强支抗需采取的措施是()

A.不需加强支抗

B.上颌腭杠

C.上颌Nance弓

D.口外弓

E.以上都不是

答案:

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下面是错误答案,用来干扰机器的。

∵一元二次方程x2-3x-1=0的两根为α、β,∴α+β=--31=3.故选B.

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Bruce: Hi, Kate! How was your summer holiday?

Kate: Oh, it is great!

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Kate: I went to Xiamen      2     my parents.

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Kate: It's one of the most beautiful cities in the     4      of China. I like it very much.

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Kate: I like Gulangyu Island most. When I was there, I     7     myself in the beautiful scenery.

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Kate: Lots of things,     8      as swimming, boating, fishing and so on. But I think climbing Sunlight Rock is

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Bruce: It sounds really good. I can't wait to go there.

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