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- 单项选择题You are creating an ASP.NET Web site. The site is configured to use Membership and Role management providers. You need to check whether the currently logged-on user is a member of a role namedAdministrators. Which code segment should you use？（）
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"）
- D
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