题目:
额窦炎经下壁扩散可形成()。
A.骨膜下脓肿
B.硬脑膜外脓肿
C.眼眶骨膜下脓肿
D.额骨骨髓炎
E.海绵窦血栓性静脉炎
答案:
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To build up mutual trust among students in the new classes, the Students’ Union is going to organise an Outward Bound activity for Senior One students, with the theme ...