题目

一Must I stay here with you? 一No, you          .You may go home, but you          go to the net bar. A. mustn’t, needn’t  B. needn’t, mustn’t    C. must, need D. need, must 答案：B下列四幅地面和高空等压面分布图中，正确的是A．③④　B．②③　C．①③　D．②④