汽车上坡没劲，换档加速时，易灭火的可能原因是（）。
A.辛烷值低
B.90%馏出温度高
C.50%馏出温度高
D.10%馏出温度高
参考答案：C
A bond was purchased exactly one year ago for $910 and was sold today for $1020. During the year, the bond made two semi - annual coupon payments of $ 30. What is the holding period return（）
A. 6.0%.
B. 12.1%.
C. 18.7%.
苏庄舞草龙是开化县农民（）时节庆丰收、兆吉祥，祈盼风调雨顺、国泰民安的一种民间娱乐活动。
A.春节
B.端午节
C.中秋节
D.清明节
