分清主次有的放矢复习能够巩固知识，增加对所学知识的了解，复习时要注意以下一些问题：首先，要对所学的知识有个全面的了解，找出自己已掌握和未掌握的，使各个知识点联成一个网络。这样，就能从网络中找出那些要点．对日后进一步的复习打下基础。其次，要分清主次。复... Distinguishing between major and minor purposeful review can consolidate knowledge and increase understanding of what you have learned. When reviewing, you should pay attention to the following issues: First, you must have a comprehensive understanding of the knowledge you have learned and find out what you have mastered and what you do not master. Each knowledge point is linked into a network. In this way, you can find those points from the network. To lay the foundation for further review in the future. Second, we must distinguish between primary and secondary. complex...