甲酸（HCOOH）的下列性质中，可以证明它是弱电解质的是

A．甲酸溶液中有大量的HCOOH分子和H⁺、HCOO^—

B．甲酸能与水以任意比例互溶

C．10mL 1 mol/L甲酸恰好与10mL 1 mol/LNaOH溶液完全反应

D．在相同温度下，相同浓度的甲酸溶液的导电性比盐酸弱

---I hope you enjoyed the film last night.

---How on earth do you know I went to a film? I   you.

A．won’t tell

B．didn’t

C．haven’t told

D．don’t tell