Reading the whole book is definitely not enough. 660 is a small problem, but the scope is wide and the knowledge base is comprehensive. Doing those small problems is similar to making big problems, so 660 is equivalent to strengthening and trapping things. After I finished, the speed of making small questions became very fast. But the first time I did it, it was still a blow. I think my level is not good. I always miss the knowledge points the first time, but it's much better to do more. Personally, I think the questions on 660 are better than those in the whole book. You can make good use of that book. It is not that there are too many topics, but only the degree of accuracy, so it will rise faster.

In addition, I wish the postgraduate entrance examination success, hahaha ~ ~ ~