Without plenty of oral practice，you’ll find it hard to ______a conversation with native English speakers.

A．go on

B．carry on

C．carry out

D．work on

女性患者，查体肝脏弥漫性肿大，该患者可能的疾病是

A．肝脓肿
B．肝脏肿瘤
C．脂肪肝
D．肝囊肿
E．肝棘球蚴病