在窗体上画一个名为Command1的命令按钮,其Command1_Click事件过程如下。 Sub Command1_Click() Dim student As studtype Dim record_no As Integer record n=1 With student .ino=12 .strname='Smith' .strsex=“男” .smark=89 End With ______ Put # 1,record_no,student Close # 1 End Sub 要求在c:/的随机文件student..dat写入一条记录。空行处填入以下哪条语句使该功能完整
A.
Open'c:/student.dat'For Input As # 1 len=len(student)
B.
Open'c:/student.dat:For random As # 1 len=len(student)
C.
Open'c:/student.dat'For Output As # 1 len=len(student)
D.
Open'c:/student.dat'For Append As # 1 len=len(student)