Mother's Milk

Students in an advanced biology class were taking a mid term.

The last question was "Name 7 advantages of mothers milk," worth 70 points or none at all.

One student who had partied the night before, was hard put to think of
7 advantages.

He finally wrote:
1. It is a perfect formula for the child
2. It provides immunity against several diseases
3. It is always available as needed
4. It is always at the right temperature
5. It is inexpensive
6. It bonds the child to the mother, and vice versa

And then, the student was stuck. Finally, just before the bell indicating the end of the test rang, he wrote:

7. It comes in such cute containers

He got an "A."