关于波动率及其应用，以下描述正确的有（）。
A.利用期货价格的波动性和成交持仓量的关系可判断行情走势
B.某段时期的波动率处于极低的位置预示着行情可能出现转折
C.可以利用期货价格波动率的均值回复性进行行情研判
D.可以利用波动率指数对多个品种的影响进行投资决策
参考答案：A, B, C, D
解析：没有波动性就没有金融市场，波动性在金融衍生品的定价、交易策略以及风险控制中扮演着相当重要的角色：①结合期货价格的波动率和成交持仓量的关系，可以判断行情的走势；②利用期货价格的波动率的均值回复性，可以进行行情研判。③利用波动率指数对多个品种的影响，可以进行投资决策。在震荡过程中波动率较低，预示着行情可能要出现转折。
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day of their lives. Some people eat almost 2. but rice. Rice is a kind of grass. There are 3. than 7,000 kinds of rice. Farmers grow rice in many countries, even in the 4. part of the United States and in eastern Australia. No one really 5. where rice came from. Some 6. think that it started to grow in two places. They think that one kind of rice grew in southern Asia thousands of years ago. Someone in China wrote about it almost 5,000 years ago. Another kind 7. grew in West Africa. Other scientists think that rice came from India, and Indian travelers 8. it to other parts of the world. There are two main ways 9. rice. Most rice grows in west soil. People in many countries do all of the work of growing rice by hand. This is the same way farmers worked hundreds of years ago. In some countries, people now use machines on their rice farms. People use every part of the rice plant. They make animal feed and rice oil from it. They burn dry rice plants for 10. . |