NO.PZ2020033001000093
问题如下：
Suppose current 1-year rate for zero-coupon bonds will remain at 6%, and the next 1-year will decrease by 2%. What is the 2-year spot rate?
选项：
A.4.995%.
B.5.088%.
C.5.005%.
D.5.115%
解释：
A is correct.
考点：Spot rate vs. forward rate
解析：
(1+r)^2 = (1+6%)*(1+4%)
r = 4.995%
老师decrease by不应该理解为减少百分之多少吗？所以应该是6%*（1-2%）
