1.Which of the following statements is NOT TRUE for acute respiratory distress syndrome (ARDS)? (A) ARDS is a manifestation of severe acute lung injury (B) The histologic manifestation of ARDS is diffuse alveolar damage (C) The characteristic histologic finding is emphysematous change (D) ARDS is a clinical syndrome of progressive respiratory insufficiency in the setting of sepsis, severe trauma or diffuse pulmonary infection (E) The mort mrtality rates were 35%~46%