题目

Listen and write down the sentences. 答案：【1】His attitude suggests that he is not very happy with what you are doing.细胞内各种化合物都有其特殊的功能。在动物体内作为储能物质的主要是（   ）     A.乳糖和糖元                      B.蛋白质和脂肪         C.葡萄糖和脂肪                    D.脂肪和糖元