—Which is more useful, reading or writing?
—I think _______ of them are useful.
They came into the room______.
①∠ADE=∠C
②AD•AB=AE•AC
③AD=4,AB=6,DE=2,BC=3
④AD:AB=1:3,AE:EC=1:2
从其中任选一组条件,能判定△ABC和△ADE相似的有( )