题目

 “I didn't hear them call my name，” explained Shelley Hennig to Active Teens (AT) as she talked about that exciting moment on national television when she won the honor of Miss Teen USA 2004. “Are you ready？”is what she heard.Then she said，“I shook my head no，and then they said ‘yes’and it was announced again.” It was four days after that life changing moment for the seventeen­year­old high school student from Destrehan, Louisiana­she was still on_cloud_nine. “I was so shocked! I never believed that it could actually really happen. ”Present in the audien下列气体不能用排空气法收集的是A. NH3 B. SO2 C. NO D. H2