副交感神经系统的功能有（）
A.促进消化
B.保存能量
C.加速排泄
D.保护机体
E.对抗交感活性
参考答案：A, B, C, D, E
肝脏肿瘤中最常见的肿瘤是（）
A.原发性肝胆管细胞癌
B.原发性肝细胞癌
C.继发性肝癌
D.混合型肝癌
E.肝血管瘤
It’s two years since they ____ each other， and they are going to get married next month.
A．were in love with
B．fell into love with
C．have loved
D．fell in love with
