问题补充：
The young man came riding full speed down the road on his bicycle. it was!
A. How dangerous the scene
B. What dangerous a scene
C. How a dangerous scene
D. What a dangerous scene
答案：
A. How dangerous the scene
B. What dangerous a scene
C. How a dangerous scene
(答案→)D. What a dangerous scene
解析：本题考查的是感叹句，一般用两种结构，一种是what +a/an adj n[c]+（主+谓语）或what+adj n【c】复数/n【U】+（主+谓语）,另一种是how+adj/adv +（主+谓语）！由此结构可推知答案为D
