采用telnet 202.110.101.34命令不能访问服务器，原因不可能是 (4

My father _______ TV in the living room when I ______ home yesterday. [ ]

A. watched; got

B. was watching; got

C. watched; was getting

D. was watching; was getting

在熟悉商品性能的前提下，向顾客（）所销售商品的功效和使用方法

A、演示

B、询问

C、提问

D、索要

试分析评价《女神》所表现的“五四”时代精神。

在水面下同一深处有两个点光源P、Q，能发出不同颜色的光.当它们发光时，在水面上看到P光照亮的水面区域大于Q光照亮的水面区域，以下说法正确的是（   ）

A．P光的频率大于Q光的频率

B．P光在水中的传播速度小于Q光在水中的传播速度

C．P光的光子能量小于Q光的光子能量

D．让P光和Q光通过同一双缝干涉装置，P光的条纹间距小于Q光的条纹间距

综合应用题下面是一个Applet程序，实现实心或者空心矩形的绘制。要求鼠标在Applet窗口中拖动实现矩形的绘制，可以选择填充或者空心，有按钮用来清空窗口中的图像。请改正程序中的错误（有下划线的语句），使程序能输出正确的结果。注意：不改动程序的结构，不得增行或删行。程序运行结果如下：

import java.awt.*;import java.applet.*;/* */public class ex13_3 extends Applet{ private Button btnClear; private CheckboxGroup cbg; private Checkbox chk1, chk2; private int upX, upY;private int downX, downY;private boolean bDraw, bClear, bStyle; public void init(){ bDraw = false; bClear = false; bStyle = false; setLayout(null); cbg = new CheckboxGroup(); chk1 = new Checkbox("Hollow", cbg, true); chk2 = new Checkbox("Filled", cbg, false); chk1.reshape(80,getSize().height-80,80,25); chk2.reshape(160,getSize().height-80,80,25); add(chk1); add(chk2); btnClear = new Button("clear"); btnClear.reshape(240,getSize().height-80,80,25); add(btnClear); } public void paint(Graphics g){ if(bDraw){ if(upX > downX && upY > downY){ if(bStyle) g.fillRect(downX, downY, upX - downX, upY - downY); else g.drawRect(downX, downY, upX - downX, upY - downY);}else if(upX > downX && upY < downY){ if(bStyle) g.fillRect(downX, upY, upX - downX, downY - upY); else g.drawRect(downX, upY, upX - downX, downY - upY);}else if(upX < downX && upY > downY){ if(bStyle) g.fillRect(upX, downY, downX - upX, upY - downY); else g.drawRect(upX, downY, downX - upX, upY - downY);}else if(upX < downX && upY < downY){ if(bStyle) g.fillRect(upX, upY, downX - upX, downY - upY); else g.drawRect(upX, upY, downX - upX, downY - upY);}bDraw = false; } if(bClear){g.clearRect(0,0, getSize().height, getSize().width);bClear = false; } } public void update(Graphics g){ paint(g); } public boolean mouseUp(Event e, int x, int y){ upX = x; upY = y; bDraw = true; repaint(); return true; } public boolean mouseDown(Event e, int x, int y){ downX = x; downY = y; return true;} public boolean action(Event e, Object o){ if(e.target == btnClear){bClear = true;repaint(); } if(chk1.getState() == true){bStyle = true; } if(chk2.getState() == true){bStyle = false; } return true; } }ex13_3.html