Blood flows go? A teacher giving a lesson on the circulation of blood. Trying to make the matter clearer, he said: "Now, if I planted banana trees, as you all know, the blood will put down my head and face will turn red." The whole class chorused: - Yes, sir! Teacher glad asked: - Why when I am standing upright in a normal position, the blood did not put my foot down? A boy shouted: - Since no hollow leg, sir !
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