英语四级命题作文：是否有必要参加培训班?

Is It Necessary to Attend Training Classes?
　　According to the graph, great changes have taken place in the number of training classes in the past ten years. On the one hand, from 2004 to 2007, the increase of the training classes was not so great. On the other hand, there has been a sharp increase in the training classes after 2010.
　　There are three reasons for the change. Firstly, with the development of the society, more people pay much attention to the improvement of their ability, and they hope to improve through training classes. Secondly, to most people, training plays a direct part in helping them to attain their goal quickly and efficiently. Thirdly, with the improvement of the people's living standards, more and more people regard it as a preferable way to spend their spare time.
　　As for me, it is necessary to attend training classes. For one thing, they can play a very important role in helping you to attain your goal quickly and efficiently. For another, you can learn not only what you need quickly but also a new way to broaden your horizon.            (180 words)