第四单元
........\blake.gif
........\brooke.gif
........\david.gif
........\MyApplet_15.java
........\MyApplet_16.java
........\MyApplet_17.java
........\MyApplet_18.java
........\MyApplet_19.java
........\MyApplet_20.java
........\MyCanvas.java
........\MyLineDrawApplet.java
........\MyTest_29.java
........\MyTest_30.java
........\MyTest_31.java
........\MyTest_32.java
........\MyTest_33.java
........\MyTest_34.java
........\MyTest_35.java
........\MyTest_36.java
........\MyTest_37.java
........\TestSnd.wav
........\town.mid
........\trip.mid
........\习题_5.doc
........\习题_6.doc
........\习题解答_1.doc
........\习题解答_2.doc
........\习题解答_3.doc
........\习题解答_4.doc
........\教案08.doc
........\课件_06.ppt
........\课件_07.ppt
........\飞机.gif