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问题 单项选择题

对于年龄较小的前牙反牙合患者，以下暗示预后较差的是（）

A.存在乳恒牙替换障碍

B.上前牙较直立

C.反覆牙合较深

D.下颌可以退至前牙对刃

E.上牙弓严重拥挤

答案

参考答案：E

句型转换

句型转换。

1. He was born 21 years ago.(对划线部分进行提问)   

_____ _____ _____ he _____?

2. Li Ping hiccupped for 3 days.(对划线部分进行提问)  

_____ _____ _____ she ______?

3. I went to school when I was six years old.(改为简单句)  

I went to school _____ _____ _____ _____ six.

4. She is very excited. She can’t say a word.(合为一句)  

She is _____ excited _____ _____ a word.

5. How far is Beijing from Shanghai?(改为同义句)  

How far _____ _____ _____ _____ _____ to Beijing?
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单项选择题 A1/A2型题

鼻咽癌放疗原发灶根治剂量一般应给予（）

A.30Gy

B.40Gy

C.50Gy

D.70Gy

E.80Gy
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