教材原文：
The
compensates investors for expected inflation and reflects the average inflation rate expected over the maturity of the debt plus a premium (or discount) for the probability attached to higher inflation than expected (or greater disinflation). The sum of the real risk-free interest rate and the inflation premium is the
nominal risk-free interest rate
, often represented by a governmental Treasury bill YTM.
(Institute 36)
此题答案一年期国债 yield计算用的是long term inflation expectation，而教材原文写的是inflation rate expected over the maturity of the debt，所以我觉得是不是应该用current inflation rate更好，虽然不是expected 但是会与一年期通货膨胀率更接近一点
