A:64
B:72
C:108
D:168
Jim records his physical training every time so that he can it and think about how he should improve it the next day.
①青草丛中隐藏着一条倾斜的隧道。____
②即使有骤雨,这里也立刻会干的。____
③那微斜的门口,经过仔细耙扫,收拾得很平坦。这就是蟋蟀的平台。____
④屋子的内部没什么布置,但是墙壁很光滑。____
⑤住所是很简朴的,清洁、干燥,很卫生。____
如图为某生态系统能量流动的图解,其中代表人的字母是( )