以下不属于古汉语虚词专著的是（）
A.《说文》
B.《词诠》
C.《助字辨略》
D.《经传释词》
E.《古汉语虚词》
参考答案：A
Would you please tell me _____? [ ]
A. where the East Airport is
B. how far the East Airport was
C. how can we get to the East Airport
D. when was the East Airport built
某工程双代号网络计划如下图所示，其关键线路有（）条。
A．1
B．2
C．3
D．4
