First, the dollar has depreciated, and people exchange oil for dollars, which is worthless. Of course, the price has been raised. Second, the price is hyped, that is, when the dollar depreciates, institutions and individuals holding a large amount of dollars will exchange the dollars for commodities such as oil to preserve the value, thus stimulating the soaring oil price. At the same time, it is also the result of the joint action of oil giants and speculative funds. Third, oil prices are ultimately determined by the relationship between supply and demand, especially the rise of China and India, which objectively provides reasons for speculation. But everything is in a hurry, and it is inevitable that it will fall back. The highest this year is 170 USD, and the lowest is 100 USD. If the United States and Iraq go to war, it will exceed 200 dollars. ..