根据下面短文内容，在短文的空格处填入一个恰当的词，使短文完整、通顺。每空一词，含缩略词。
“Early to bed, early to rise, makes a man healthy, wealthy(财富) and wise (智慧).”
This is an old English saying (谚语)．Did you hear of it? It means that we must go to bed early and ____ up early in the morning．Then we will keep ____．We'll also be rich and clever.
This is true．The body must have ____ sleep to be healthy．Children of young age should have ten ____ sleep every day．Children who don't have enough sleep can't do their work very well．They won't be clever and they may not become rich!
The body also needs ____．Walking, running, jumping, swimming and playing games are all exercise．Exercise the body strong(强壮).
Exercise also helps the blood(血) to ____ around inside the body．This is very important．Our blood ____ food to all parts(部分) of our body．The head also needs blood． Exercise helps us to think____.
K2MnO4+MnO2+O2↑．下列图象表示一定质量的KMnO4受热过程中某些量随时间的变化趋势，其中正确的是（ ）