一You went late ___ the stadium yesterday evening,didn’t you? 一Yes,my wife was a little late ___ the supper A,to;with B.for;with C for;for D at:for 答案:AFe、Mg、Al三种金属分别跟稀盐酸充分反应,得到相同质量的氢气,其原因是( ) A:Fe、Mg、Al的质量相等,盐酸足量; B:Fe、Mg、Al的质量比是28∶12∶9,盐酸足量; C:Fe、Mg、A1的质量比是56∶24∶27,盐酸足量; D:Fe、Mg、Al均为过量,所用盐酸的质量分数和质量都相同.