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单项选择题

ToexaminetheExhibit,presstheExhibitbutton.Whichofthefol……

To examine the Exhibit, press the Exhibit button. Which of the following addresses will be reachable without adding any routes?()

A.129.35.54.21
B.129.35.57.21
C.129.35.58.21
D.129.35.55.21