题目

阅读理解For most people, Christmas is a time to relax in the company of family and friends. But for Santa Claus, and the thousands of fake Santas who impersonate（模仿） him every year, the Christmas season is time to get to work. Although Santa Claus waits until Christmas Eve to take his famous sleigh (雪橇) ride, Santa impersonators can be found at shopping malls around America throughout the six weeks leading up to December 25. When you see Santa talking with kids at your local mall, that's when you know Christmas really is on the way, says Mary Lewine of New York City. With the e下列有机营养素所提供的能量约占人体总能量摄入的50%-70% 的是A.糖类     B.油脂      C.维生素     D.蛋白质