Because of _____ high demand for Type AB blood, _____ supplies of it are usually limited. [ ]

A. the; the

B. /; /

C. /; the

D. a; the

肝脓肿的特点正确的是

A．细菌性肝脓肿常为单发，较大

B．阿米巴肝脓肿起病急，伴寒战、高热

C．阿米巴肝脓肿较小，多为多发性

D．阿米巴肝脓肿脓液为褐色，无臭味

E．阿米巴肝脓肿病人粪便中可找到阿米巴原虫