题目内容：

Old ___he is ,he is full of energy .He dares to compete with a young man .A although B as
c even though d however

优质解答

B 倒装

追问：

那A C 不用能倒转吗？能分析得详细点吗？谢谢

追答：

although 一般用在句首 even though 一般不倒装 形容词old 位于句首时一般用as 倒装