题目

One morning a few years ago, Harvard President Neil Rudenstine overslept. For this busy man, it was a sort of alarm: after years of non-stop hard work, he might wear himself out and die an early death. Only after a week’s leave—— during which he read novels, listened to music and walked with his wife on a beach—— was Rudenstine able to return to work. In our modern life, we have lost the rhythm between action and rest. Amazingly, within this world there is a universal but silly saying: “I am so busy.” We say this to one another as if our tireless efforts were a talent by nature a考场上的你，信心满满，大脑如陀螺般飞速运转，笔尖轻快地写下答案。这些生命活动需要消耗能量，能量来自于细胞内有机物的氧化分解。这个过程是怎样的呢？（1）人体细胞中的有机物来源于食物，食物中含能量的有机物有糖类、____和________。（2）在图一中，能够分泌胆汁的结构是[1]___________。而吸收营养物质的主要场所是[4] ______________,其长度和内壁结构特点，可增大其内表面积。（3）在图二中，X、Y、Z三条曲线代表食物中三种营养物质在消化道中的变化情况，图中C字母代表的器官是____________，表示蛋白质消化过程的曲线是____________，蛋白质最终被分解成_________。（4）葡萄糖的氧化分解需要在氧气的参与下进行。吸气过程中，肋间肌和膈肌处于___________状态。此时，肺内气压__________ （小于／大于）外界气压。