第23题: [填空题]下面程序的功能是统计字符串中“广的个数，请填空。
Sub COU( )
a$="Beijing University of Technology"
Dim n AS Integer
n=Len(a$)
For i=1 To n
b$=【 】
If 【 】 Then x=x+1
Next i
Print "x="；x
End Sub
参考答案:Mid$(a$，i，1) 答案解析:本题的思路是用截取字符函数Mid来逐个查找字符中a$中是否有“i"41字符，x记录“i”的总个数。如果满足条件语句b$="i"就执行x=x+1，然后输出。
第28题:[单选题] 下周我们将参观我市博物馆。 A. Next week we will make a visit to the museum in our city. B. Next month we will make a visit to the Summer Palace. C. Next week we will make a visit to the laboratory in our school 参考答案:A
