第6题: [单项选择]Simply put, things normally go wrong not because you are stupid ______ because you have never thought about them carefully. A. but B. just C. since D. for 参考答案:A 答案解析:[理由] 本句测试下列固定结构: not...but... 不是……而是…… *“not...but...”视为对等连接词,可连接对等的名词、形容词、介词短语或从句。 1