The school dinning room _______ as a meeting place for teachers and students.

A．treats

B．admits

C．functions

D．uses

能出现反常呼吸的肋骨骨折是（）

A.两根肋骨骨折

B.两根以上肋骨骨折

C.双侧肋骨单根骨折

D.多根多处肋骨骨折

E.多发性肋软骨骨折