题目

I’m sorry to say that we have ________.A. made few progress B. made very little progressC. made no progresses D. made a small progress 答案：【答案】B【解析】B 考查不可数名词。progress为不可数名词，可排除C和D两项；few修饰可数名词，故排除A项。句意：我很抱歉我们只取得了很小的进步。故选B。已知函数f(x)，g(x)分别由下表给出，则满足f(g(x))=g(f(x))的x值为（    ）。