Lucy liked all the dresses there，but she took the ______one to save as much money as possible for Project Hope.

A．cheaper

B．more expensive

C．cheapest

D．most expensive

/etc/passwd中的‘root’记录，变成‘Root’名称，通常意谓着？（）

A.权限变大

B.系统升级所致

C.可能被入侵了

D.没关系啦