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问题 单项选择题

以下不能正确创建输出文件对黎并使其与磁盘文件相关联的语句是（　　）。

A．ofstreammyfile；myfile．open("d：ofile．txt")；

B．ofstream*myfile=newofstream；myfile->open("d：ofile．txt”)；

C．ofstreammyfile("d：ofile．txt")；

D．ofstream*myfile=new("d：ofile．txt")；

答案

参考答案：D

解析：【解析】本题考查文件对象的创建方法。可以直接定义文件对象，也可以用new来动态生成。很明显，选项D中使用new的方式是错误的。

单项选择题

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：
Private Sub Command1_Click( )
Dim x(5)As String
Dim n As Integer
For n=4 To 0 Step-i
x(n)=n+1
Print x(n)；
Next n
End Sub
程序运行后，单击命令按钮，则窗体上显示的内容是______。

A．54321

B．4

C．5 4 3 2 1

D．0
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填空题


Throughout history has (1) changed his physical environment in order to improve his (2) of life. With the tools of technology he has (3) many physical features of the earth. He has (4) woodlands and prairies into farms and made lakes and reservoirs (5) of rivers for irrigation purposes or hydroelectric (6) . Man has also modified the face of the earth by (7) marshes and cutting through mountains to (8) roads and railways.
However, man’s (9) to the physical environment have not always had beneficial results. Today, (10) of the air and water is an increasing danger to the health of the (11) . Each day thousands of tons of gases come out of the exhausts of motor vehicles. (12) from factories pollutes the air of industrialized areas and the surrounding (13) of the countryside. The pollution of water is equally harmful. The whole ecological (14) of the sea is being changed and (15) wastes have already made many rivers lifeless.
Now (16) protection is more pressing than ever before. As we know, massive destruction of the environment has brought about (17) effects and even poses a great (18) to man’s existence. Indifference to these problems will mean committing suicide. Therefore, effective (19) should be taken and laws passed to (20) the environment. Otherwise, man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings.
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