古代罗马建筑艺术解决了拱券结构的笨重墙墩同柱式艺术风格的矛盾，创造了( )。
A．叠柱式 B．巨柱式C．混合柱式 D．券柱式
参考答案：D
由梅州到广州的某一次列车，运行途中停靠的车站依次是：梅州--兴宁--华城--河源--惠州--东莞--广州，试用所学的线段的有关性质说明要为这次列车制作的火车票数有几种？
The weather turned out to be fine yesterday. I _____ the trouble to carry my umbrella with me. [ ]
A. should have taken
B. could have taken
C. needn't have taken
D. mustn't have taken
