When people want to relax themselves, they prefer_______ TV or listen to music rather than ______

newapapers. [ ]

A. Watching; read

B. watching; to read

C. to watch; read

D. to watch; reading

淀粉和纤维素的分子组成都可以用通式__________表示，蛋白质水解的最终产物分子中，含有的官能团是__________和__________（ 填官能团名称）。人体内各种组织的蛋白质在不断地分解，最后主要生成__________排出体外。