Object: Different brands of colas - Coke, Pepsi, Royal Crown, etc.

Good morning, boys and girls. Today I brought with me something that all of you probably like a lot. I brought different kinds of cola. I have Coca Cola, Pepsi Cola, Royal Crown Cola, and they are all favorites of mine. One of them was made first. I think it was Coca Cola and people liked it so much that soon someone made another kind and called it Pepsi Cola and pretty soon there was another and then another and then another. We will call the first one an original and all of the rest are imitators. That's not bad because people like the imitators very much. As a matter of fact, the reason that I brought all of them is that I want you to learn something about y…