问题如下：
Central banks would typically be most concerned with costs of:
选项：
A.low levels of inflation that are anticipated.
B.moderate levels of inflation that are anticipated.
C.moderate levels of inflation that are not anticipated.
解释：
C is correct.
Low levels of inflation has higher economic costs than moderate levels, all else equal; unanticipated inflation has greater costs than anticipated inflation.
考点：Inflation
解析：未预期到的通胀是更不好的，它会导致债务双方的间财务利益的再分配，减少价格信息的有效性，带来意向不到的后果，所以这题选C。
低通胀的的经济运行成本也更高，它意味着一国当局不能刺激经济。但与此同时，未预期的通胀带来的成本也更大。
低通胀和没有预期到的通胀更应该关注未预期到的通胀，这题可以当作结论记忆。
未预期到的通胀会导致获得固定收益现金流的一方受损，可以从这个角度理解吗？
