含N个顶点的连通图中的任意一条简单路径，其长度不可能超过(

搜题请搜索小程序“爱下问搜题”

问题单项选择题

含N个顶点的连通图中的任意一条简单路径，其长度不可能超过( )

A．1

B．N/2

C．N-1

D．N

答案

参考答案：C

单项选择题

Following a year of fast development, by the first quarter of this year, China has had about 1,100 e-commerce websites.

A．China had about 1,100 e-commerce websites by the end of last March

B．by the end of the first quarter of this year, China has had about 1,100 e-commerce websites

C．by the end of this recent past March, China has about 1,100 e-commerce websites

D．by the end of this first quarter, China had about 1,100 or so e-commerce websites

单项选择题

经济学的一个基本假定是（）。

A.资源有限，人类的欲望无穷

B.资源无限，人类的欲望有限

C.资源有限，人类的欲望有限

D.资源无穷，人类的欲望无穷