Look, the roller coaster !
A. how high speed; is moving
B. what high speed; is moving at
C. how a high speed; is moving at
D. what a high speed; is moving
网友回答
A. how high speed; is moving
(答案→)B. what high speed; is moving at
C. how a high speed; is moving at
D. what a high speed; is moving
解析：本句考查的感叹句，what+adj+n 后接主语+谓语！故选答案为B