下列（）等社会保险项目中，职工个人必须缴纳社会保险费
A.养老保险
B.医疗保险
C.失业保险
D.工伤保险
参考答案：A, B, C
运输收入进款送存、上缴有何规定？
It is the first time ____ I have come to your city.
A．that
B．which
C．what
D．when
