题干
The Arabian Nights _____ well known all over the world, in which many a story_____ interesting and instructive．
A：is; are
B：are; i
C：are; are
D：is; i
答案(点此获取答案解析）
D
，所加氢氧化钠溶液的体积(mL)与产生沉淀的物质的量(mol)关系如下图所示。下列叙述正确的是（ ）