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问题 单项选择题

转速相同的交流发电机，磁级对数多的，电源频率（）。

A、低

B、高

C、不变

D、不一定

答案

参考答案：B

填空题
用所给单词和短语的适当形式填空。
be named after,    up-to-date,    creature,    get close to,    minority,
various,    admission,    profit,    a variety of,    pull into
1. There are ____ ways of getting to the station but I preferred to walk there.
2. The ____ to the movie was five dollars.
3. This new invention will bring you great ____ like a goldmine.
4. This is the school that ____ a hero where he spent his childhood.
5. On the outskirts of the city, we saw many ____ bungalows (平房).
6. Coral is not a plant but animal life of ____ different shapes and bright colours.
7. Our train ____ Beijing Station on time.
8. Just imagine how horrible the world would be if' human is the only ____ in the world.
9. Take a camera and ____ the nature in your summer holiday.
10. We're in the ____ more people are against us than with us.
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单项选择题 案例分析题

患者男，21岁，下颌呈相对后退位，下颌角大，口唇闭合呈现口唇肌肉紧张。覆Ⅲ度，覆盖7mm，磨牙远中咬合关系，上颁拥挤4mm，ANB为8°，SNA为81°，下颌无拥挤，下前牙略唇倾，Spee曲线曲度3mm

此患者在整平Spee曲线时，不宜采用下列哪项措施（）.

A.辅弓

B.节段弓

C.J钩

D.上颌斜面导板

E.以上都不是
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