肉瘿内治通常选用方剂（）
A.丹栀逍遥散
B.四海舒郁丸
C.海藻玉壶汤
D.牛蒡解肌汤
E.柴胡清肝饮
参考答案：C
—You look so young. Haven’t you graduated from your university?
—Yes, I________in the English Department of Shandong University for four years.
A．studied
B．study
C．had studied
D．was studying
猪瘟的主要传播方式是
A．间接接触传播
B．垂直传播
C．水平传播
D．直接接触传播
