A. 鼻腭管 B. 牙槽突表面近鼻孔基部的软组织内 C. 侧切牙和尖牙牙根之间 D. 下颌第三磨牙颊侧 E. 上颌第三磨牙颊侧
A. It’s near the Mexico City. B. It’s in Guatemala. C. It’s stretched from the plains of central Mexico to the mountains of Guatemala. D. It’s in America.
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