第4题: [单项选择]Who is probably the woman A. Mark the latest home. B. Put a notice on the classroom door. C. Return some exam papers to his students. 参考答案:C
A. there is a lot of rain B. there is one reservoir C. the people work together for the benefit of all D. many wells have been found 参考答案:C 答案解析:[解析] 通过对上下文的理解,整个文章谈的都是合作,可以得出C为最佳选项。