问题
单项选择题
患者，女，11岁。替牙
，上牙前突，有间隙，前牙深覆，下颌明显后缩，面下1/3短。
诊断：安氏Ⅱ类1分类。矫治器设计为功能性(FR-1)矫治器，导下颌向前。
FR-1型功能调节器适用于矫治的牙畸形是（）
A．安氏Ⅱ类1分类
B．安氏Ⅱ类2分类
C．安氏Ⅲ类
D．安氏Ⅳ类
E．开
答案
参考答案：A
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患者，女，11岁。替牙，上牙前突，有间隙，前牙深覆，下颌明显后缩，面下1/3短。
诊断：安氏Ⅱ类1分类。矫治器设计为功能性(FR-1)矫治器，导下颌向前。
FR-1型功能调节器适用于矫治的牙畸形是（）
A．安氏Ⅱ类1分类
B．安氏Ⅱ类2分类
C．安氏Ⅲ类
D．安氏Ⅳ类
E．开
参考答案：A
Do you often watch TV? Maybe your 1 is “Yes”. Most children like watching TV 2 it’s interesting and relaxing. They can also learn a lot and know 3 things about their country and the world. TV helps to open children’s eyes. TV can open 4 mind. They can learn some better ways of 5 things. Many children are always 6 with their studies, so they watch TV only on weekends. 7 some children watch TV every night. They go to 8 very late and they can't have a good rest. I 9 it’s good to do so. What do you 10 it?
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