【简答题】宝石的成品重以克拉计算,1克拉等于( )克。
【简答题】The choice to adopt and hold gratefulness is the one that is different from those who suffer misfortune and those who enjoy a full life. My mother died when I was 24. It was a very difficult time in m...
【单选题】提出“有教无类”,开创“私家讲学”先河的圣人是( )
【判断题】钻石的计量单位为克拉,1克拉等于0.1克。( )