3. (I) Noam Chomsky’s ethical analyses are based on what he calls the “principle of universality”. (II) Good politicians must analyze their political actions rigorously, instead of blinding the public with rhetoric. (III) At root, this principle is relatively simple. (IV) It says that at the very least we should apply to ourselves the same standards that we apply to others. (V) This is a principle that Chomsky claims has always been central to any responsible system of ethics.

5. (I) The Colosseum in Rome, which was the largest and most famous of the Roman amphitheatres, was opened for use in 80 A.D. (II) Even so, there are others that are in better condition. (III) Elliptical in shape, it consisted of three storeys and an upper gallery. (IV) It was principally used for gladiatorial combat. (V) As for its capacity, it could seat up to 50,000 spectators.