By Valentina Za MILAN (Reuters) – Archaeologists have discovered four new rooms in a house in Pompeii filled with plates, amphoras and other everyday objects, giving a snapshot of middle class life at the moment Mount Vesuvius’s eruption buried the Roman city in AD 79. The remains of bowls, a hastily emptied trunk, a bed and a crib-shaped terra-cotta perfume burner were found on two floors of a previously-excavated building, the Pompeii archaeological park authority said on Saturday. Some were more valuable than others – vessels made of bronze or glass next to everyday tools. “A large slice of…