1. In the capital asset pricing model, the so-called capital assets mainly refer to stock assets, while pricing tries to explain how the capital market determines the stock return rate and then the stock price.

2. According to the general relationship between risk and return, the necessary rate of return of assets is determined by the risk-free rate of return and the risk rate of return of assets.

3. The necessary rate of return is equal to the risk-free rate of return plus the risk rate of return.

4. One of the main contributions of the capital asset pricing model is to explain the determinants and measurement methods of risk-return ratio.