能正确表示下列化学反应的离子方程式是 [ ]

A．氧化铜与稀硫酸反应：O^2-+2H⁺= H₂O

B．稀H₂SO₄与铁粉反应：2Fe+6H⁺=2Fe³⁺+3H₂↑

C．铜片插入硝酸银溶液中Cu+Ag⁺=Cu²⁺+Ag

D．硫酸氢钾与氢氧化钠：OH^-+H⁺＝H₂O

—Do you like the film 13 Flowers of Nanjing(金陵十三钗)?

—Yes, I do. In fact, I've never seen a _______one.     [ ]

A. good            

B. better        

C. worse          

D. Bad