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下面的程序是从命令行输入3个数传递到public static void main(String args[])方法中(如java Is Triangle 34 5)，并判断这3个数能否构成三角形的3条边，并显示相应的结果。请在程序的每条横线处填写一个位运算符，使程序的功能完整。注意：请勿改动main()主方法和其他已有的语句内容，仅在横线处填入适当的语句。源程序文件代码清单如下： public class IsTriangle { public static void main(String args[ ]) { int a[ ]=new [args.length]; for(int i=0;i＜args.length;i++) { a[i]= ; } if(__) System.out.println(a[0]+ ","+a[1]+ ", "+a[2]"能构成三角形的3条边"). else System.out.println(a[0]+ ","+a[1]+ ", "+a [2] "不能构成三角形的3条边")； } }

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请完成下列Java程序；实现JComboBox，包含3个选项，分别是java、c++、vb，以及1个文本区，用于显示选择结果。注意：请勿改动main()主方法和其他已有语句内容，仅在下划线处填入适当的语句。源程序文件代码清单如下： import java.awt.event.; import javax.swing.; import java.awt.*; public class ex14_2 extends JFrame implements ItemListener { BorderLayout bLay = new BorderLayout(); JTextField jtf = new JTextField(27); JComboBox jcb = new JComboBox(); public ex14_2() { super ("ex14_2");//调用当前类ex14_2的父类JFrame的构造方法。 jcb.addItemListener(this); jcb.addItem("java"); jcb.addItem("c++"); jcb.addItem("vb"); jcb.setEditable(false); jtf.setHorizontalAlignment(SwingConstants.CENTER); jtf.setEditable(false); JPanel jp = new JPanel(); jp.setLayout(bLay); jp.add(jtf, "South"); jp.add(jcb, "Center"); setContentPane(jp); } public static void main(String[] args) { JFrame frame = new ex14_2(); frame.pack(); frame.setVisible(true); } public void itemStateChahged(ItemEvent ie) { Object o = if (o == job) { Object newO; ______; jtf.setText(newO.toString()+"被选中!"); } repaint(); } }

A: Spot DictationDirections: In this part of the test, you will hear a passage and read the same passage with blanks in it. Fill in each of the blanks with the word or words you have heard on the tape. Write your answer in the corresponding space in your ANSWER BOOKLET. Remember you will hear the passage ONLY ONCE. What is distance learning It means that you study on your own, at home or wherever suits you. Recently, the world famous Open University in the United Kingdom has designed a new style of distance learning, which is called" (1) ". The phrase "Open Learning" means you study (2) . You read course material, work on course activities, and write (3) .The word "Supported" means you have help (4) , the student services staff at regional centres, and centralised areas such as (5) . You can also contact other students through tutorials and (6) , the University’s online conferencing system and events and dubs organised by (7) . Most distance learning courses use printed paper materials. They also include some (8) materials such as a CD, DVD or video. Many courses have a website and an (9) . You’ll need access to a computer (10) to make use of these. The Open University can help its students buy a computer and (11) the cost of accessing the Internet. With most distance learning courses, no (12) are required to study. Of course, you have to be aged 18 when your course starts but there is no (13) .Currently the Open University has around (14) undergraduate and more than 30,000 postgraduate students, of which 10,000 have (15) . Nearly all students are studying (16) . About 70 percent of undergraduate students are in (17) . More than 50,000 students (18) by their employers for their studies. Most distance learning courses (19) . Some of them are even available in other parts of the world. With over 25,000 of its students living outside the UK, the Open University is the (20) that offers distance learning throughout the world.

Americans do not go in for envy. The gap between rich and poor is bigger than in any other advanced country, but most people are unconcerned. Whereas Europeans fret about the way the economic pie is divided, Americans want to join the rich, not soak them. Eight out often, more than anywhere else, believe that though you may start poor, if you work hard, you can make pots of money. It is a central part of the American Dream. The political consensus, therefore, has sought to pursue economic growth rather than the redistribution of income, in keeping with John Kennedy’s adage that "a rising tide lifts all boats." The tide has been rising fast recently. Thanks to a jump in productivity growth after 1995, America’s economy has outpaced other rich countries’ for a decade. Its workers now produce over 30% more each hour they work than ten years ago. In the late 1990s everybody shared in this boom. Though incomes were rising fastest at the top, all workers’ wages far outpaced inflation.

中国坚定不移地走和平发展道路，是基于中国国情的必然选择。1840年鸦片战争以后的 100多年里，中国受尽了列强的欺辱。消除战争，实现和平，建设独立富强、民生幸福的国家，是近代以来中国人民孜孜以求的奋斗目标。今天的中国虽然取得了巨大的发展成就，但人口多，底子薄，发展不平衡，仍然是世界上最大的发展中国家。推动经济社会发展，不断改善人民生活始终是中国的中心任务。中国人民最需要、最珍爱和平的国际环境，愿尽自己所能，为推动各国共同发展作出积极贡献。