单项选择题
A.bool isMember = Roles.GetUsersInRole（"Administrators"）.Any（）
B.bool isMember = Membership.ValidateUser（User.Identity.Name， "Administrators"）
C.bool isMember = Roles.GetRolesForUser（"Administrators"）.Any（）
D.bool isMember = User.IsInRole（"Administrators"）
多项选择题 YoucreateanASP.NETpagethatcontainsthefollowingtag.PageNameYouneedtowritecodethatwillchangethecontentsofthetagdynamicallywhenthepageisloaded.Whataretwopossiblewaystoachievethisgoal？（）
单项选择题 You are implementing an ASP.NET page that includes the following drop-down list. You need to dynamically add values to the end of the drop-down list. What should you do? （）
多项选择题 You create a custom server control named Task that contains the following code segment. You need to ensure that adding a Task control from the Toolbox creates markup in the following format. Which two actions should you perform？（）