_____ of danger in the street at night, she had to go home, with a friend ____ her.

A．Warning, following

B．Having warned, following

C．Having been warned, following

D．Warned, followed

测定全血胆碱酯酶活力是诊断

A．巴比妥中毒

B．阿托品中毒

C．有机磷中毒的特异性指标

D．乙醇中毒

E．一氧化碳中毒