按面层材料园路分为（）。
A、整体路面、块料路面、碎石路面和简易路面；
B、路堤式、路堑式和特殊式；
C、主路、次路、小路和小径。
参考答案：A
Americans eat ____ vegetables per person today as they did in 1910. [ ]
A. more than twice
B. as twice as many
C. twice as many as
D. more than twice as many
一般类组织客户节假日慰问必须采取的开展方式是（）
A.电话
B.信函
C.上门
D.短信
