BMO capital markets in the report pointed out that because of interest, inflation hedge and global easing monetary policy to offset the strong dollar, 2018, gold prices are expected to average $1280 an ounce. But the fed's proposed slow, steady rate hike will curb investor demand and limit the upside potential. The market is the condition that Commodity Exchange is carried out smoothly, it is commodity circulation domain all Commodity Exchange activity total. The market system is made up of all kinds of professional market, such as goods and services market, financial market, labor market, technology market, information market, the real estate market, cultural market, a complete system of tourism market, etc. At the same time, each professional market in the market system has its special functions, which are interdependent and mutually restricted, and work together in the social economy. The orderly performance of the market ensures equal competition and fair trade, protecting the legitimate rights and interests of producers and operators and consumers. The independent of interest is of positive significance to show the active role of the fund users in the reproduction process. The first wedge-shaped car was made in 1963, and the car was highly regarded as an expert in car shape design. In 1968, gm's Ozzie toronado improved and developed the wedge-shaped car, and in 1968, it was adopted by the Cadillac premium sedan, eldo. Wedges are widely used in racing cars. Because the car first considers the influence of fluid mechanics (aerodynamics) and other issues on the automobile, the body can be made entirely by wedge, while the ride comfort is considered as a secondary consideration. Like the Italian ferrari in the 1980s, it was a typical wedge shape. Wedge shape for currently considering the high-speed car, whether from the aspects of its modelling concise, move feeling, or from its embodiment of aerodynamics, are conform to the requirements of the modern people's subjective, with a strong contemporary breath, give a person with beautiful enjoyment and speed fast. Japan's Toyota motor co., the MR2, is an engine sports car (the tail is fitted with a flexible flow board) that can be called a car in a wedge car. Enterprise due to withdraw, and transfer or liquidation disposal of equity investment and equity investment losses, can be in pre-tax deduction, but the deduction of each tax year equity investment losses, shall not exceed the implementation of equity investment income and transfer income, more than part can be to a tax year after deduction carry forward indefinitely. In theoretical economics, investment means buying (and therefore producing) capital goods - not being consumed but being used in future production. Examples include building railroads, or factories, cleaning the land, or allowing yourself to go to college. Strictly speaking, investment in formula GDP= C + I + G + NX is also part of gross domestic product. In that respect, the function of investment is divided into non-residential investments (such as factories, machinery, etc.) and residential investment (new homes). The correlation between I = (Y, I) is known to have a close relationship with income and interest rates. Higher incomes would boost higher investment, but higher interest rates would discourage investment because it would be more expensive to borrow. Even if companies choose to use their own funds to invest, interest rates represent the opportunity cost of investing in those funds rather than the interest that will lend out.