The meeting will ______ at 8 o'clock. [ ]
A. hold
B. holding
C. held
D. be held
答案:D
卡介苗接种后所致结核菌素阳性反应是指硬结直径()
A.<5mm
B.5~9mm,3~5天后反应消失
C.10~19mm,1周后留有色素
D.15~20mm
E.>20mm
新生儿脑重占成人脑重的百分比
A.10%~12%B.25%C.60%D.75%E.85%~90%