— He made few mistakes in his speech, ______________? — ____________, his performance is wonderful.
A:didn't he; Yes, he did
B:did he; No, he didn't
C:was he; No, he isn't
D:wasn't he; Yes, he is
如图表示的是初中几种常见物质的转化关系(部分反应物、生成物及反应条件省略),已知C为生活中不可缺少的调味品,F为大理石的主要成分,请回答以下问题: