所有的吉芬品都是劣等品。( )
参考答案：对
News came from the school office _____ Wang Lin had been admitted to Beijing University. [ ]
A. which
B. what
C. that
D. where
颌骨骨髓炎临床上通常是______感染
A．金黄色葡萄球菌
B．溶血性链球菌
C．肺炎球菌
D．大肠杆菌
E．混合性细菌
