题目

下列物质中，不属于高分子化合物的是A．酶           B．天然橡胶       C．淀粉             D．硬脂酸甘油酯  答案：D解析:略  －Is Mr Liu famous ________ his songs? －Yes, but he isn't known ________ a writer like his father． [　　] A．for; as B．as; for C．in; to D．to; in