将纯水加热至80℃，下列叙述正确的是[ ]

A．水的离子积不变

B．水的pH变小，呈酸性

C．水的pH变大，呈中性

D．水中的c（H⁺）=c（OH^-）>1×10^-7mol/L

一 How did you like Nick's performance last night?

一 To be honest, his singing didn't _____ to me much. [ ]

A. appeal

B. belong

C. refer

D. occur