治疗阵发性睡眠性血红蛋白尿不正确的措施是（）
A.输注洗涤红细胞
B.输注右旋糖酐
C.应用糖皮质激素
D.维A酸诱导
E.骨髓移植
参考答案：D
Lots of rescue workers were working around the clock, _____ supplies to Yushu, Qinghai Province after
the earthquake. [ ]
A. sending
B. to send
C. having sent
D. to have sent
细菌在半固体培养基生长时，可看到细菌只沿穿刺线生长，此细菌可能是
A．单毛菌
B．丛毛菌
C．无鞭毛的细菌
D．双毛菌
E．周毛菌
