方胜亭之“方胜”作何解释？
参考答案：方胜又称双菱，指两菱形相叠。方胜亭是指两个亭顶一个亭身，亭身的图案形如方胜。
The new group of students are better-behaved than the other group who stayed here___
A．early
B．earlier
C．earliest
D．the earliest
燃油有哪六种物理特性？
