NO.PZ2016010802000154
问题如下：
When a central bank announces a decrease in its official policy rate, the desired impact is an increase in:
选项：
A. investment.
B. interbank borrowing rates.
C. the national currency’s value in exchange for other currencies.
解释：
A is correct.
Investment is expected to move inversely with the official policy rate.
考点：federal fund rate
解析：市场利率的下降会鼓励投资，那么投资增加而非下降，所以A选项正确。
银行间借贷利率会跟随federal fund rate一同下降，B选项错误。
利率的下降会导致收益率的下降，从而引起外资出逃，进而降低汇率水平，所以C选项错误。
请问为什么银行间利率随着FFR一起下降