题目

— It will be terrible to see the nuclear war happen between U.S and Iran. — That’s right. Nuclear science should be developed to benefit the people ___ harm them. A. more than           B. rather than         C. other than       D. better than 答案：B 解析: 略已知KH和H2O反应生成H2和KOH，反应中1mol KH [     ]A．失去1 mol电子 B．得到1 mol电子C．失去2 mol电子D．没有电子得失