题目

It was Thanksgiving. Snow was falling when Bob_________ towards the city park. Bob was deserted（遗弃）by his parents and was raised（抚养）by a kind man. Two years ago, to be _____________, Bob built a tradition. That was to take his Thanksgiving dinner to the park to share with a homeless person.The park was _________. Everyone was home enjoying their dinner. After arriving at the park, Bob saw an old woman sitting on a bench（长椅）. Bob stopped his car in a parking place and got out. He took the _________from the front seat and began walking towards her. When he stood beside he环境中影响生物形态、生理、分布的因素称为生态因素，生态因素包括下列哪两项(    )A.生物因素                   B.动物C.非生物因素                 D.植物