题目：
| 完形填空。 | ||||
| Not all advertising is about selling products and services for a profit. 1 contemporary advertisements mainly aim to make contributions to 2 . There are public advertisements which 3 citizens to participate in improving their neighborhood, protecting the environment, and helping other people. Over the last decade, the government has worked hard at using advertisements to educate the 4 on fighting AIDS, saving water, helping the poor, giving up smoking, etc. These advertisements have helped to increase public knowledge, 5 has made our society a better place for everyone. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
由元素所在周期表的相对位置可知，X为He，Y为F，W为Cl，Z为S，则A．同周期元素从左到右原子半径逐渐减小，则Y为同周期元素中原子半径最小的，故A错误；B．W为Cl，对应的最高价氧化物对应的水化物HClO4为最强的含...
窗口由1个标签(Labell)、1个文本框(txtPassage)和4个选择框(chkFont，chkltalic，chkSize，chkColor)组成。程序运行后，用户在文本框内输入一段文字，然后按需要单击各选择框，用以改变文本的字体、字型、颜色及大小。 文本框的Mulitine属性已经设为True。当不选择“黑体”时，文字应是“宋体”。当不选择“大小16”时，字号为9。当不选择“紫色”时，字色为黑色。当不选择“斜体”时，文字采用正常字型。 【程序代码】 Private Sub chkFont Click( ) If (1) Then txtPassage. FontName ="黑体" Else txtPassage. FontName ="宋体" End If End Sub Private Sub (2) () If chkColor. Value = 1 Then txtPassage. ForeColor = QBColor(13) Else txtPassage. ForeColor = QBColor (0) End If End Sub Private Sub chkltalic_Click() If chkltalic. Value = 1 Then txtPassage. Fontl talic = (3) Else txtPassage. Fontltalic= (4) End If End Sub Private Sub chkSize Click( ) If (5) Then txtPassage. Font. Size = 16 Else txtPassage. Font. Size = 9 End If End Sub