（问题解决：）：第一段：Almost no one in China can have failed to notice the fact that（名词 ）has/have become a grave problem with which we are confronted currently.(28) 第二段：Diverse contributing factors can account for this phenomenon，but the following might be the critical/crucial ones.两点理由： For one thing,A good case in point is that +例子For another,（三点理由：First and foremost,In addition, furthermore, moreoverLast but not least,）第三段： 解决问题：In view of the seriousness （严重性）/significance（重要性）
