增加：在缺词处加一个漏字符号（∧）, 并在其下写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线, 并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；

2）只允许修改10处, 多者（从第11处起）不计分。

    Jack lives in a smaller town in England. He usually stayed in his own country during the holidays. Last year, he decided to go to Russia and stayed there for a few day. One day, he went out for walk. In England, people drive on the left side of the road. And in Russia, they drive on the right, which Jack forgot. When crossed a busy street, she was almost knocked down by a car. Jack stood here for a moment, full of fear. Shortly after he recovered from himself, he said: “Where am I?” An old man which sold maps nearby ran to Jack at once and said: “Maps of the city, sir?”

人体连续发生的一系列生理活动可用流程图来表示，以下流程图中不正确的是（　　）

圆锥的底面半径是6厘米，高是20厘米，它的体积是____立方厘米。