It can’t be denied that the Diaoyu Islands are _______ part of China and what some Japanese have done recently is actually an offence against _______ Chinese people.

A．a; /

B．a; the

C．the; /

D．/; the

在窗体中有两个文本框分别为Text1和Text2，一个命令按钮Command1，编写如下两个事件过程：
Private Sub Command1_Click()
a=Text1．Value+Text2．Value
MsgBox a
End Sub
Private Sub Form_Load()
Text1．Value=" "
Text2．Vatue=" "
End Sub
程序运行时，在文本框Text1中输入78，在文本框中Text2输入87，单击命令按钮，消息框中输出的结果为______。