<script language="javascript">var x=3;var y=2;var z=(x+2)/y; alert(z); </script>

txtl="What a very"; txt2="nice day"; txt3=txtl+txt2; 

根据上述代码，txt3 的运算结果是()。

public class LoginServlet extends _________{

public void doGet(HttpServletRequcst req,HttpServletResponse resp) throws ServletExccption, IOLxccplion { … }

public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletFxception, IOException { … }

在下划线处应填写()

Public class Servletl extends HttpServlet{

Public void doGet(HttpServletRequest request,HttpServletResponse response)Throws ServletException IOException{ System.out.println(“get”);}

Public void doPost(HttpServletRequest request,HttpServletResponse response)Throws ServletException,IOException {System.out.println(“post”);doGet(reauest,response);}

用户在浏览器地址栏中键入正确的请求URL 并回车后，在控制台上显示的结果是()。