The little boy came riding full speed down the motorway on his bicycleit was!A. What a

问题补充：

The little boy came riding full speed down the motorway on his bicycle. it was!

A. What a dangerous scene

B. What dangerous a scene

C. How a dangerous scene

D. How dangerous the scene

答案：

(答案→)A. What a dangerous scene

B. What dangerous a scene

C. How a dangerous scene

D. How dangerous the scene

解析：本题考查感叹句。这是一个由what引出的感叹句，其基本结构是“what+a [an]+形容词+名词+主语+谓语”。如用how, 则应为how dangerous the scene was