善治经络风痰的药物为（）。
A.半夏
B.天南星
C.旋覆花
D.白芥子
E.皂荚
参考答案：D
As we all know, the generation ____ makes it difficult for parents to understand their children's opinions. [ ]
A. division
B. gap
C. separation
D. interval
下列( )不是计算机病毒的特征。
A．传染性
B．可激发性
C．潜伏性
D．复制性
