a: Circulatory system ~
b: two-part highway system
What: "The body's circulatory system is like a two-part highway system. One set of roads leads out to the suburbs from the city center; the other leads back in. "
Useful?
Writer: Not Stated
LCC:
Where:
Date: Jun 11 2014 5:41 PM
# 5817 Critique Analogy