题目

裸子植物与被子植物相比，最主要的区别是（   ） A．种子外有种皮的保护                              B．种子外无种皮的保护 C．种子外有种壳的保护                              D．种子是裸露的，无果皮保护 答案：DWe should give the disabled encouragement to live _________ as we do.A．as a rich and full lifeB．as rich and full a lifeC．so a rich and full lifeD．so rich and full a life