题目

----We need a person very much to think up such an idea．    ----_________ the new manger have a try? A．Shall        B．May          C．Should             D．Need 答案：A 解析: 略下列物质的水溶液因水解显碱性的是A.NH4ClB.NaOHC.CH3COOKD.CH3COOH