问题
单项选择题
绝缘锚段关节两转换柱定位，非工作支比工作支抬高（）。
A.200mm
B.100mm
C.300mm
D.500mm
答案
参考答案：D
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绝缘锚段关节两转换柱定位，非工作支比工作支抬高（）。
A.200mm
B.100mm
C.300mm
D.500mm
参考答案：D
| 请根据句意从方框中选择合适的词, 并用其适当形式填空，使句子通顺。 | |
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| 1. People often admire _____ and want to do things like them. 2. —Who taught your brother drawing? —Nobody. He taught _____. 3. We must understand the _____ of learning a foreign language. 4. Nick stayed _____ after the car accident. 5. "You shouldn't be so careless," Mrs Smith said _____ to her son. |