题型:名词解释 _______ was known to them all that William had broken his promise ______ he would give each of them a gift. A.As; WhichB.What; thatC.It; thatD.It; which 查看答案
题型:名词解释 下列叙述中正确的是( )A.不能使酚酞试液变色的溶液一定是酸性溶液B.使灼热的氧化铜还原成铜的无色气体可能是氢气C.某固体中加入稀盐酸,产生了无色气体,证明该固体中一定含有Na2CO3D.金属活动性顺序表中,居于氢元素(H)位置之后的金属,性质较稳定,因而这些金属不与其他物质发生反应 查看答案