水鼓的特征有
A．腹部胀满膨大
B．状如蛙腹
C．嗳气则舒
D．常伴下肢浮肿
E．按之如囊裹水
参考答案：A,B,D,E
Students should pay attentions to ________ the teachers in class.
A．hear
B．listen to
C．listening to
D．hearing of
下列正确的是
A．A群-志贺
B．B群-福氏
C．C群-鲍氏
D．D群-宋内
E．以上均正确
