题目内容
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阅读程序： Option Base 1 Dim arr()As Integer Private Sub Form_Click() Dim i AsInteger，j As Integer ReDim arr(3，2) For i=1 To 3 Forj=1 To 2 arr(i，j)=i*2+j Next j Next i ReDim Preserve arr(3，4) For j=3 To 4 arr(3，j)=j+9 Nextj Print arr(3，2)+arr(3，4) End Sub 程序运行后，单击窗体，输出结果为
A．21
B．13
C．8
D．25
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更多“阅读程序： Option Base 1 Dim arr（)A…”相关的问题
A.即使数据类型为Variant,数组中的元素类型也必须保持⼀致
B.数据类型为Variant时,数组中的元素可以包含不同的类型
C.在数组中如果使⽤Option Base 1语句,则缺省的下界为0
D.在数组中如果没有使⽤Option Base语句,则缺省的下界为1
在窗体上画一个名称为Command1的命令按钮，然后编写如下事件过程： Option Base 1 Private Sub Command1_Click() Dim a a=Array(1,2,3,4,5) For i=1 To UBound(a) a(i)=a(i)+i-1 Next Print a(3) End Sub 程序运行后，单击命令按钮，则在窗体上显示的内容是()。
A．4
B．5
C．6
D．7
根据文章内容进行判断，正确写“T”错误写“F”。
Beads, stones, seashells, paper, precious metals such as gold and silver, base metals such as iron have all been used as money. Today, money is printed on paper. A lot of countries use their own currency, with names such as dollar, pound, franc, ruble, Yuan and so on. Since 2002, 18 of the EU members have replaced their national currencies by Euro notes and coins.
If you want to pay for something in another currency, you have to change your money into the other money. If you want to travel outside your native country,you need to change your own country's money for the money of the country you are visiting. Most large banks sell foreign currencies. You can exchange money at a bank or at an office of a tourist agency.
Wherever you go, exchanging money puts you in touch with international finance, which is concerned with exchange rates between different currencies. Deciding the rate for the international exchange of money is one of the most complex aspects of international banking.
()26. This best title for this passage is “The history of money”
()27. Euro is available in all EU member countries.
()28. Foreign exchange rates have significant impact on the economy of a country.
()29. Currency means money in the form. of paper.
()30. Banks are a good option to get your money exchanged.
