题目

下列哪一项是百家争鸣局面出现的主要原因 A、私学的兴盛        B、诸侯国的兼并战争        C、社会大变革        D、士人的解放  答案：COn holidays, they prefer to _____ at home rather than _____.A．staying, going hikingB．stay, going hikingC．stay, go hikingD．staying, go hiking