이어질 순서.

Newborn babies cry rather less than older babies. But even a small amount of crying can be quite

worrying particularly to new parents.

(A) For them, it may be helpful to know that crying makes the baby's lungs stronger, or sends exygen to his blood.

(B) However, this does not mean that it is good to leave a baby to 'cry it out'. Crying is hard on a baby,

and it uses up his limited energy.

(C) More importantly, crying is your baby's main form of communication. When he cries, you need to respond

quickly and find out what is wrong.