题目

连词成句。(注意各小题的词形变化)【1】was, she, when, her, fell, ride, bicycle, she____________________________________________________.【2】lie, for, few, minutes, I, there, a____________________________________________________.【3】out, ride, I, bicycle, was, my____________________________________________________.【4】wear, goodness, helmet, thank, I, my____________________________________________________.【5】my, my, save, life, bicycle, helmet____________________________________________________.已知f（x）=log2x-（）x，x为其零点，且f（a）•f（b）•f（c）＜0，0＜a＜b＜c，则不可能有（ ）A．x＜cB．0＜x＜aC．x＜bD．x＞a