Seventh HeavenBy: Alice Hoffman Part American Graffiti, part early Updike, Seventh Heaven simultaneously chronicles the coming of age of a group of teenagers in a Long Island town, and the gradual dissolution of their parents repressed, middle class world A parable about changing times and changing values(The New York Times) from the bestselling author of The Rules of Magic. Nora Silk doesnt really fit in on Hemlock Street, where every house looks the same. She's