—When can we read in the library?   

—It ______ every day except Sunday.

A．opens

B．open

C．is open

D．opening

急腹症的病人腹腔内穿刺液为带臭味的血性液，最可能为（）。

A.肠套叠

B.绞窄性肠梗阻

C.急性胰腺炎

D.胃、十二指肠溃疡穿孔

E.胆囊穿孔