下颌智齿冠周炎沿下颌支外侧面向后可形成
A．翼颌间隙感染
B．咽旁间隙感染
C．颌下间隙感染
D．口底蜂窝织炎
E．咬肌间隙感染
参考答案：E
Though there are some differences in American education and Chinese education, both systems are _____
excellent graduates.
[ ]
A. turning out
B. turning away
C. turning off
D. turning in
为什么燃烧室要分成许多立火道？
