题目

锂—铜空气燃料电池是低成本高效电池。该电池通过一种复杂的铜“腐蚀”现象产生电能，其中放电过程为2Li＋Cu2O＋H2O===2Cu＋2Li+＋2OH－。下列说法不正确的是A. 放电时，Li+透过固体电解质向Cu极移动B. 通空气时，铜被腐蚀，产生Cu2OC. 放电时，正极的电极反应式为:Cu2O＋2H+ +2 e- ===2Cu＋H2OD. 整个反应过程中，氧化剂为O2补全对话 从方框中所给的选项中选择正确的句子补全以下对话。 A:Hello, Michael! Thank you very much for giving away your money to Project Hope.B: 1. I am glad to do something good for poor kids.A:So am I. Project Hope has helped the poor kids a lot in the past twenty years.B:Yes. And I think it will continue working well later.A:I think so. 2. B:I have been in China for about ten years.A:Oh, it’s a long time. 3. B:Yes. It has really changed a lot. It used to be crowded and dirty, but it has become a beautiful city. 4. A:What’s the greatest change in China?B: 5. A:You are right. I am proud that China is becoming richer than before.