题目

下列关于细胞化学成分的叙述,不正确的是（ ） A . 肝糖原和纤维素都只含有C，H，O三种元素 B . 脂肪是生物体主要的储能物质,水解的最终产物是CO2和H2O C . 胆固醇与维生素D都属于脂质 D . 蛋白质结构多样性与氨基酸的种类,数目、排列顺序及肽链的空间结构有关 答案：B—Where is the bookstore? —Take the elevator ______ the second floor and turn left.     And the bookstore is ______ the furniture store and the drugstore. [     ]A. at, next to B. at, between C. to, between D. to, next to