题目

The United States Capitol is a monument, a working office building, and one of the most recognizable symbols of representative democracy (议会民主)in the world. Visitors are welcome to enter the building through the Capitol VisitorCenter, located underground, beneath the East Front plaza of the U.S. Capitol at First Street and East Capitol Street. Hours—The Capitol Visitor Center is open to visitors from 8:30 a.m. to 4:30 p.m. Monday through Saturday except for Thanksgiving Day, Christmas Day, New Year's Day and on Inauguration Day. Admission and Passes—Admission to the Capitol V定义在上的偶函数满足且在上是减函数，、是锐角三角形的两个内角，则与的大小关系是          （    ） A、               B、      yjw C、                D、与的大小关系不确定