学员qh0473 老师讲的题很有针对性

报了网校的辅导课，发现每一章都有练习题，老师讲的题很有针对性，使我弄清了许多模糊不清的概念，请老师继续多讲些这样详细的习题。

                                                                                                                                                                                                                       学员：扬扬

（责任编辑：chenlongyu）