A:x+1x
B:-x-1x
C:−|x|−|1x|
D:|x|+|1x|
找出《小草和大树》文中AABC型的成语(四个),并写在横线上。
____ ____ ____ ____
——Your mother's never seen a 3D film at the cinema, has she?—— ____, but only once.