问题
单项选择题
正常成年人腰椎的椎管前后径的范围为()
A.5～15mm
B.12～21mm
C.15～25mm
D.14～15mm
E.32～35mm
答案
参考答案：C
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正常成年人腰椎的椎管前后径的范围为()
A.5～15mm
B.12～21mm
C.15～25mm
D.14～15mm
E.32～35mm
参考答案：C
| 情景交际。 | |
| Jane: Hi, Sarah! 1_______ Have you heard of ? Sarah: Yes. 2_______ Jane: It'll start at 10: 30 a.m. tomorrow. Kangkang: Sarah, what did she say? Sarah: 3_______ Jane: Many famous models will be there to model the clothes. Kangkang: 4_______ Jane and Sarah: Yes, we will be free tomorrow then. Kangkang: OK. 5_______.
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