問(wèn)題描述段

Nowadays，an increasing number of people ＿＿＿。However，危害、表現(xiàn)1＿＿＿。Even worse／Besides，＿＿＿。

說(shuō)明原因段

There are many factors resulting in such a ＿＿＿。Among these，＿＿＿plays a vital role.原因1。In addition，原因2。

說(shuō)明方法段

In view of the seriousness of ＿＿＿。I think? it is urgent to take necessary measures to ＿＿＿。Above all，方法1。Secondly，方法2。Besides，方法3。To conclude，it depends on common efforts to ＿＿＿。