—We will go to the Wushan Square this afternoon, why not take a bus?

—We ________ take a bus , it’s only one kilometer or more.

A．can’t

B．needn’t

C．mustn’t

D．may not

while和do-while循环的主要区别是（ ）。

A．native2ascii

B．ascii 2 native

C．RMI

D．tnameser