题目

There was once a group of young people searching everywhere for happiness but what they got was only annoyance, grief and misery. So they   36   Socrates for advice on where happiness   37  . But   38   giving any answers, Socrates asked them to help with building a   39   first. The group of guys had to   40   the task, laying aside their own business of seeking happiness. It took them a long time to cut down a tall tree, gouging out (挖空) the center. Through painstaking effort, they made a canoe out of the tree. They launched the canoe into a river, and then 将下列算式的得数按从小到大排列。30+40 70+20 80－40 90－30 60－10