“太宗皇帝真长策,赚得英雄尽白头!”此诗句反映了唐朝科举制度的情况。
若a、b、c为实数,且a+b+c=1,则a2+b2+c2的最小值为____
一 Has she replied to your question?
— Not yet. She says she is busy at the moment.
根据人体血液循环图回答问题