【填句补文】As part of their study, the researchers used a special machine to take action photos of the students' brains. ________. This is the same part of the brain that becomes active when good readers read. This activated brain area appears to include a structure that helps people recognize familiar written words quickly.
A
Do you have difficulty reading in class?
B
The pictures showed an increase in activity in the back of the brain on the left side.
C
As part of the study, 37 struggling readers received special tutoring.
D
By the end of the school year, these children could read faster than before.