某人右上肢瘫痪，是由于（　　）

A．．肱二头肌和肱三头肌受到损伤

B．肩关节、肘关节不够灵活

C．肌肉内的血管受损

D．支配右上肢的神经受损

请在下列程序的空白处，填上适当的内容：
Import java.awt.*;
Import java.util.*;
Class BufferTest
Public static void main(string args[])
Throws IOException
FileOutputStream unbuf=
new FileOutputStream("test.one");
BufferedOutputStream buf=
new______(new FileOutputStream("test.two"));
System.out.println
("write file unbuffered:"+time(unbuf)+"ms");
System.out.println
("write file buffered:"+time(buf)+"ms");

Static int time(OutputStream os)
Throws IOException
Date then=new Date();
for(int i=0;i＜50000;i++)
os.write(1);


os.close();
return(int)(()new Date()).getTime()-then.getTime());