Understand different connotation of interest rates, will help us for the financial concepts of interest rates has a more deepen understanding, especially the formation, change and derivatives need to be determined by the market, this is a very key factor. No 2 different people can be be extremely alike. One person will require to outgoing activities while the other would like those things that one can pursue in your own home. Even when looking at friends, we got to know that all the buddies that we have will also be different. Friends themselves have different tastes and very different likes. Flash memory and DRAM demand growth over the long term The investment of securities provides an important means for the central bank to conduct financial macro-control, which is of great significance to the sustainable and efficient development of the national economy.