二级考试训练，一共四份练习题，每份分为题目和答案，可以先下载题目，做完之后在下载答案对照找错提升，通过全国二级考试-Training of the two examinations, a total of four exercises, each divided into questions and answers, you can download the subject looking in the wrong done after the download answer control to enhance, through the national secondary examinations