Reading is an experience quite different from watching TV; there are pictures in your mind instead of before your eyes.
A. to form
B. form
C. having formed
D. forming
网友回答
A. to form
B. form
C. having formed
(答案→)D. forming
解析：考查分词做定语用法。Pictures与form构成主动关系，故使用现在分词短语做定语修饰pictures.句意：阅读是一种鱼看电视完全不一样的经历。在你的思维中而表示在你的眼前形成了很多的照片。故D正确。
考点;考查分词做定语