The best times to visit Shangri-la are spring and autumn ___ the temperature is at its mildest.

A．where

B．on which

C．when

D．in that

一男性成年患者检查发现血清ALT1200U/L，血清总胆红素126μmol/L，抗HAV-IgG阳性，HBsAg阳性，HlBeAg阳性，打HBc-IgM强阳性，抗HBc-IgG弱阳性，最可能的诊断是( )

A．急性甲型肝炎，黄疸型
B．急性甲型肝炎，无黄疸型
C．急性乙型肝炎，黄疸型
D．急性乙型肝炎，无黄疸型
E．甲型肝炎合并乙型黄疸型肝炎