侵袭性葡萄胎转移结节局部选用（） ["甲氨蝶呤（MTX）","5-氟尿嘧啶（5-FU）","更生霉素（KSM）","KSM+5-FU","MTX+5-FU"]
侵袭性葡萄胎、绒癌病变转移到阴道（） ["Ⅰ期","Ⅱa期","Ⅲ期","Ⅳ期","Ⅱb期"]
侵袭性葡萄胎、绒癌病变转移到肺（） ["Ⅰ期","Ⅱa期","Ⅲ期","Ⅳ期","Ⅱb期"]
侵袭性葡萄胎、绒癌病变局限在子宫（） ["Ⅰ期","Ⅱa期","Ⅲ期","Ⅳ期","Ⅱb期"]
足月妊娠分娩后β-hcG下降至正常的时间（） ["9天","12天","19天","30天","60天"]
简述肝硬化的声像图表现。
