问题
选择题
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．forming
D．having formed
答案
答案：C
句意：看书时有画面在大脑中形成，而不是在眼前。而句中有谓语“there are ”，所以本应填非谓语动词，可排除B项。又因为“看书的同时就会形成”，排除A、D选项，故选C项作定语。