题目:奥运会金牌的镀金量至少为几克纯金?选项A:4克选项B:5克选项C:6克选项D:8克正确答案:选项C选项C:6克、奥运会金牌的镀金量至少为几克纯金? http://m.gdfshaiyu.com/lunwen/140642.html