甲、乙两地相隔一座山岭，某人从甲地到乙地用6.5小时，从乙地回到甲地用7.5小时．他往返途中上山速度是3千米/时，下山速度是4千米/时，则甲、乙两地间的山岭路程有（　　）千米．

A．24.5

B．24

C．49

D．48

The child was _____  of being left  alone in the house. Which is WRONG? [ ]

A. terrified          

B. afraid

C. frightened        

D. terrifying