题目

______ students in class 4 took park in that spring outing.  A. 48 allB. 48 whole      C. All 48D. The whole 48   答案：Call是副词，修饰名词短语48 students。已知函数f（x），g（x），分别由下表给出x123f（x）211x123g（x）321则g（1）的值为______；当g[f（x）]=2时，x=______．