"The women and the girls read."
Translation:Οι γυναίκες και τα κορίτσια διαβάζουν.
This has been explained already on this page. But since I see you are new to Greek I'll tell you again.
The words have grammatical gender" which simply means they are used in a particular way . In this case the word (not the person) is neuter so it must have a neuter article..."τα**".