____of danger in the street at night, she had to go home, with a friend ___ her. [ ]

A. Warned; accompanied                  

B. Warning; accompanying

C. Having warned; accompanied            

D. Having been warned; accompanying

发生电源被短路的情况是电源通向负载的两根导线不经过负载而相互（）。

A.间接接通

B.直接接通

C.未接通

D.断开