出国英语问题原因

The causes and possible solutions(问题段)Nowadays, … has / have become a serious problem. As it has affected social stability, it is urgent to investigate the causes of the tendency and find solutions to the problem.(原因段)There are many factors resulting in …. First of all, 原因一 plays a vital role. Furthermore, …原因二. In addition, 原因三.(问题解决段)Considering the seriousness of 该问题, I think it is high time we took effective measures to …. Firstly, …. Secondly, …. Thirdly, …. In a word, it is an urgent thing to ….