题目

从Ⅱ栏中选出Ⅰ栏合适的答语。Ⅰ栏⑴How many pencils? ⑵What colour is it? ⑶How are you? ⑷Let's go to school! ⑸What's your name? Ⅱ栏A. OK!B. Fine, thank you.C. Two.D. My name's MikeE. It's green. 答案：【1】C【2】E【3】B【4】A【5】D下列叙述中正确的是（　　）A．用铂电极电解NaOH溶液，一段时间后，溶液中溶质的质量分数不变B．用电解法精炼粗铜时，粗铜作阴极C．用惰性电极电解100mL饱和食盐水，生成112mL氢气（标况）时，氢氧根离子浓度约为0.05mol/L（假定溶液体积仍为100mL）D．铜锌原电池工作时，正极从外电路得到电子