单项选择题
Which HTTP method represents a request for information about the supported methods on an HTTP server？（）
A. GET B. INFO C. HEAD D. TRACE E. OPTIONS
单项选择题 Which statement inserted at line II， retrieves the text from the second text field？（）
单项选择题 Which retrieves the binary input stream on line 13？（）
单项选择题 GivenanHttpServletRequestrequestandHttpServletResponseresponse，whichsetsacookie“username”withthevalue“joe”inaservlet.？（）
