徐长卿入汤剂时应
A．先煎B．后下C．包煎D．另煎E．烊化
参考答案：B
解析：因徐长卿含挥发性成分，久煎有效成分易散失。故答案选B。
It is often recommended that children _____ chances to get close to nature.
A．are offered
B．be offered
C．should offer
D．must be offered
厂房构件自防水是利用钢筋混凝土板自身的密实性，对板缝进行局部防水处理而形成防水的屋面。( )
