题目

She is very dear to us. We have been prepared to do ______  it takes to save her life. A. whichever B. however     C. whatever    D. whoever 答案：C 解析: 考查名词性从句的引导词。句意为：她对我们来说是非常宝贵，我们已经准备好做一切来拯救她的生命。若三角形的两边长分别为2和6，则第三边的长可能是【   】A．3B．4C．5D．8