题目

肌肉细胞和叶肉细胞含糖的差异，主要表现在（ ）A.淀粉和葡萄糖 B.糖元和纤维素C.乳糖和淀粉 D.葡萄糖和核糖 答案：【答案】B【解析】肌肉细胞为动物细胞，含有葡萄糖合成的肌糖原，叶肉细胞为植物细胞，含有光合作用产物淀粉和细胞壁的成分纤维素，B正确。Can you tell me ___________?A. what are you doing B. where do you studyC. what you were doing D. what to do it