The Great Wall is tourist attraction that millions of people pour in every year. A. so a

问题补充：

The Great Wall is tourist attraction that millions of people pour in every year.

A. so a well-known

B. a so well-known

C. such well-known

D. such a well-known

答案：

A. so a well-known

B. a so well-known

C. such well-known

D. such a well-known

解析：考查so---that 和such-----that的辨析。So+adj./adv.+that; such+a/an(adj.)+n.+that,都表示太----以至于----；故选D符合。