As the nurse helps the client prepare for discharge, the client says, "You know, I’ve been in lots of hospitals and I know when I’m sick enough to be there. I’m not that sick now. You don’t need to worry about me. " Which of the following would be the most therapeutic response by the nurse

A. "We’re concerned about you. How can we help you before you leave"
B. "We could have helped you more if you had told us more. "
C. "Is there any information you need before you leave the hospital"
D. "Okay, you know best. "

ClO₂是一种消毒杀菌效率高、二次污染小的水处理剂。实验室可通过以下反应制得ClO₂：

2KClO₃+H₂C₂O₄+H₂SO₄2ClO₂↑+K₂SO₄+2CO₂↑+2H₂O下列说法正确的是[ ]

A．KClO₃在反应中得到电子

B．ClO₂是氧化产物

C．H₂C₂O₄在反应中被氧化

D．1 molKClO₃参加反应有2mol电子转移