听力原文:M: I'll take these three records. Are they $2.5 each? W: These two records are, but this one is 50 cents more,. Q: How much will the man pay for the three records? (19)
【单选题】若在应用程序中用“Private Sub Sub1(x As Integer,y As Single)”定义了子程序Sub1,调用程序中的变量I,J均为Integer型,则正确调用子程序Sub1的Call语句是______。 1Call Sub1(I,J) 2Call Sub1(3.1415,I) 3Call Sub1(3.14,234) 4Call Sub1("245","231.5")