抛掷一个质地均匀的正方体骰子，骰子的六个面上分别刻有1至6的点数，则掷得点数是2的概率是（ ）。
—The weather isn't good enough for an outing，is it?
—Not at all. We can't have ________ at this time of the year.
A．a worse day
B．a nicer day
C．such bad a day
D．so fine a day
零息债券的规避风险为零，是债券组合的理想产品。（）
