题目

An extract from The Greatest Tales of Sherlock HolmesI think I will tell you what happened last night. My husband Sir Eustace went to bed at about half past ten. The servants had already gone to their rooms. Only my housekeeper s【1】 in her room at the top of the house until I needed her.I sat until after eleven in this room, deep in a book. Then I walked round to see that all was right before I went u【2】 . I always did this myself, to be sure that everything is OK. I went into the kitchen, the store room, the living room, and f【3】 the dining-room. As I came near the window, which i18．地衣能在岩石表面生长，它还会分泌地衣酸使岩石溶解变小．这个实例说明了（　　）A．生物能适应环境和影响环境B．生物与环境之间没有太大联系C．生物的生存与环境无关D．生物可以影响环境