题目内容
In its most extreme form, poverty is a lack of basic human needs, such as adequate and nutritious food, clothing, housing, clean water, and health services. Extreme poverty can cause terrible suffering and death, and even poverty can prevent people from realizing many of their desires. The world’s poorest people--many of whom live in developing areas of Africa, Asia, Latin America. and Eastern Europe--struggle daily for food, shelter, and other necessities. They often suffer from severe malnutrition(营养不良), infectious disease outbreaks, famine, and war. In wealthier countries--such as the United States, Canada, Japan, and those in Western Europe--the effects of poverty may include poor nutrition, mental illness, drug dependence, crime, and high rates of disease.Extreme poverty, which threatens people’s health or lives, is also known as destitution or absolute poverty. Relative poverty is the condition of having fewer resources or less income than others within a society or county, or compared to worldwide averages.The reasons for poverty are not clear. Some people believe that poverty results from a lack of adequate resources on a global level--resources such as land, food, and building materials--that are necessary for the well-being or survival of the world’s people. Other see poverty as an effect of the uneven distribution Of resources around the world on an international or even regional scale. This second line of reasoning helps explain why many people have much more than they need to live in comfort, while many others do not have enough resources to live. What is the main idea about the first paragraph（）
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W: When I was getting divorced in 1975, reporters and cameramen were camped out for days in the lobby and on the sidewalk outside. They came from all over the country. Foreign reporters too. It was terrible. My neighbors could barely get in and out of the building. One reporter, who had been a friend of mine, got up to my apartment after persuading the doorman into believing that he was there on a personal visit. I wouldn’t let him in. He just wanted to talk, he said. I was certain that he had a camera and wanted a picture of me looking depressed. I just couldn’t believe this attempt to invade my privacy. TV is the worst. TV reporters present themselves as having the perfect right to be anywhere, to ask any question. It doesn’t matter how personal the matter may be.People don’t trust the press the way they used to. In most cases, stories are sensationalized in order to attract more public attention. Some papers print things that simply are not true. In many papers, if a correction has to be made, it’s usually buried among advertisements. I’ve received hundreds of letters from people asking me how do you know what’s true in the press these days. I find it difficult to respond sometimes. I tell them that there are good newspapers and serious, responsible and honest reporters. Don’t judge all of us by the standards of the bad ones. Unless the guys at the top—the editors and the news directors take firm action, pretty soon no one is going to believe anything they read in the papers or see on television news. One reporter got to the speaker’s apartment pretending to pay().
请完成下列Java程序：读取新浪首页文件的数据并且显示出来。要求编写JFrame扩展类，以String类的对象定义的url地址作为入口参数，该类实现根据url参数指定的地址进行连接和读取数据，并且能显示在一个文本区域内。 注童；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 javax.swing.*; import java.awt.*; import java.awt.event.*; import java.net.*; import java.io.*; public class ex15_2 { public static void main(String args[]) { UrlFrame page = new UrlFrame("http://www.sina.com.cn"); page.show(); } } class UrlFrame extends JFrame { JTextArea jta = new JTextArea("正在读取文件..."); URL url; public UrlFrame(String strAddr) { super (strAddr);//使用父类的构造方法。 setSize(450, 300); JScrollPane jsp = new JScrollPane(jta); getContentPane().add(jsp); WindowListener wl = new WindowAdapter() { public void windowClosing(WindowEvent we) { System.exit(0); } }; addWindowListener(wl); try { url = new URL(strAddr); ______; } catch (MalformedURLException murle) { System.out.println("不合适的URL:"+ strAddr); } } void getData(URL url) { URLConnection con = null; InputStreamReader isr; BufferedReader readBuf; String strLine; StringBuffer strBuf = new StringBuffer(); try { con = this.url.openConnection(); con.connect(); jta.setText("打开连接..."); isr = new InputStreamReader(con.getInputStream()); readBuf = new BufferedReader(isr); jta.setText("读取数据..."); while ((strLine = readBuf.readLine()) != null) strBuf.append(strLine + "\n"); ______; } catch (IOException e){ System.out.println("IO错误:" + e.getMessage()); } } }
A．IL-1 B．IL-2C．IL-3 D．EPOE．IFN-α 刺激多能干细胞增生分化的是（）
An airplane flies because its wings push down on the air flowing past them, and in reaction, the air pushes up on the wings. When an airplane is level or rising, the front edges of its wings ride higher than the rear edges. The angle the wings make with the horizontal is called the angle of attack. As the wings move through the air, this angle causes them to push air flowing under them downward. A sleeper angle of attack will cause the wings to push more air downward. The third law of motion voiced by English physicist Isaac Newton states that every action produces an equal and opposite reaction. In this case, the wings pushing air downward is the action, and the air pushing the wings upward is the reaction. This causes lift, the upward force on the plane, Lift is often explained using Bernoulli’s principle, which states that, in some circumstances, a faster moving fluid(流体) (such as air)will have a lower pressure than a slower moving fluid. The air on the top of an airplane wing is at a lower pressure than the air underneath the wing, but this is an effect of lift, not its cause.Lift is one of the four primary forces acting upon an airplane. The others are weight, thrust, and drag. Weight is the force that offsets lilt. because it acts in the opposite direction. The weight of the airplane must be overcome by the lift produced by the wings, if an airplane weighs 4.5 metric tons, then the lift produced by its wings must be greater than 4.5 metric tons in order for the airplane to leave the ground. Designing a wing that is powerful enough to lift an airplane off the ground, and yet efficient enough to fly at high speeds over extremely long distances, is one of the marvels of aircraft technology. What is the cause of "Lift"
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