关于investment horizon,何老师说是长期,她的依据是这句话“only the major currencies against US dollar were likely to be used for the next several years”以及“the anticipated positions would not have any associated income or liquidity requirements”,后面那句无疑问,前面那句是关于investment horizon的吗?相比起来,我觉得这句“currency exposure would usually not extend beyond a six-month period”更像描述investment horizon,不过这样一来就是投资期为短期了。