在窗体上画一个名称为Labell的标签,然后编写如下事件过程: Dim arr(10,10)As Integer Dim i As Integer,j As Integer For i=2 To 4 For i=2 To 4 art(i,j)=j*j Next j Next i Label1.Caption Str(arr(2,2)+arr(3.3))End Sub程序运行后,单击窗体,在标签中显示的内容是( )。
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为了使命令按钮(名称为Commandl)右移200,应使用的语句是( )。
A. Command1.Move-200
B. Command1.Move 200
Command1.Left=Command1.Left+200
D. Command1.Left=Command1.Left-200
假定窗体上有一个标签,名为Labell,为了使该标签透明并且没有边框,则正确的属性设置为( )。
A. Label1.BackStyle=0 Label1.BorderStyle=0
B. Label 1.BackStyle=1 Label1.BorderStyle=l
C. Label1.BackStyle=True Label1.BorderStyle=True
D. Label1.BackStyle=False Labell.BorderStyle=False
关于结构化程序设计原则和方法的描述错误的是( )。
A. 选用的结构只准许有一个人口和一个出口
B. 复杂结构应该用嵌套的基本控制结构进行组合嵌套来实现
C. 不允许使用GoT0语句
D. 语言中所没有的控制结构,应该采用前后一致的方法来模拟
Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank. The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name. But Gregory Cochran is 1 to say it anyway. He is that 2 bird, a scientist who works independently 3 any institution. He helped popularize the idea that some diseases not 4 thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested. 5 he, however, might tremble at the 6 of what he is about to do. Together with another two scientists, he is publishing a paper which not only 7 that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in 8 are a particular people originated from central Europe. The process is natural selection. This group generally do well in IQ test, 9 12—15 points above the 10 value of 100, and have contributed 11 to the intellectual and cultural life of the West, as the 12 of their elites, including several world-renowned scientists, 13 They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, 14 , have previously been thought unrelated. The former has been 15 to social effects, such as a strong tradition of 16 education. The latter was seen as a (n) 17 of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately 18 His argument is that the unusual history of these people has 19 them to unique evolutionary pressures that have resulted in this 20 state of affairs.
A. linked
B. integrated
C. woven
D. combined