题目

We decided not to climb the mountains because it was raining _________. A. badly    B. hardly    C. strongly    D. heavily 答案：D 解析: “雨下得很大”，用heavily或hard修饰rain。已知函数f（x）=log2x（x＞0）的反函数为g（x），且有g（a）g（b）=8，若a＞0，b＞0，则+的最小值为A.9B.6C.3D.2