题目

 The UFO scientists say that it may _____ many years to find a clear answer to the things we can't understand.        A. spend                 B. take                  C. pay                   D. pay for     答案：B   用恰当的关联词填空 索溪像是一个从深山中蹦跳而出的野孩子，（　　）缠绕着山奔跑，（　　）撅着屁股，赌着气又自个闹去了。