欲从中药材中提取双糖苷，一般可用()

A．冷水浸渍

B．70％乙醇回流

C．苯回流

D．酸性乙醇浸渍

E．酸性乙醇回流

A lot of injuries ______ very often in the home, so parents should know how to give first aid.[      ]

 A. are taken place   

B. takes place      

C. take place     

D. will be taken place