题目

在同一坐标系内作出的两个函数图象如图所示,则这两个函数为(    ) A.y=ax和y=loga(-x)                       B.y=ax和y=logax-1C.y=a-x和y=logax-1                      D.y=a-x和y=loga(-x) 答案：D解析：由图象在y轴左侧,即x＜0,排除B、C.由y=loga(-x)知a＞1,故排除A.— What did you do the day before yesterday?— My family went camping. We _____ a tent near the lake. It was great fun.A.put onB.put upC.put outD.put away