A section of the river that is narrower than usual and is often navigable from bank to bank is a（）. A: chute B: stabilized channel C: slough D: navigable pa

The most famous part in The Piligrim's Progress is ________________, where truth is rarely found. A: the Vanity Fair B: the Shadow of Humuliation C: the Castle of Despair D: the Slough of Despond