问题
选择题
| Be careful when the street. |
A. to cross B. cross C. you cross D. you'll cross |
答案
答案：C
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| Be careful when the street. |
A. to cross B. cross C. you cross D. you'll cross |
答案：C
近中邻面充填体，近中舌尖劈裂，舌尖尖锐折片Ⅲ度松动，达龈下3mm。