His wife, to whom he _____ for 20 years, died of cancer last Thursday. （ ）
A：had married
B：has been married
C：has married
D：had been married
***说：“中华传统文化是我们最深厚的软实力。”作为优秀传统文化重要组成部分的传统节日，以其丰富的文化内涵滋养着民族的心灵。请你根据自己对传统节日的了解，选出下面匹配不正确的一项（ ）
传统节日 传统习俗 相关诗句
— _______is the population of Beijing?
— Over ten million, but I'm not sure.
下列有关中国水资源的叙述，正确的是
