课上,老师问学生:“假如你居住在一个偏僻的乡村,有一天,你从溪水里淘到了一大块金子,你会进城把它卖掉,还是把它丢进屋后的水塘?”学生们笑,谁会那么傻?到手的金子,随手扔掉?老师接着说:“卖掉金子,就会有成千上万的人涌向这个乡村淘金,会修起公路,建起集镇,这里会成为繁华的工业区。当然,也会带来污染,会打破你平静的 During the class, the teacher asks the student: ”If you live in a remote country village, one day you have scoured a large piece of gold from the stream and you will go to the city to sell it or throw it into the water behind the house “The students laughed, who would be so stupid? The gold in their hands was thrown away?” The teacher went on to say: "When you sell gold, thousands of people flock to the village to raise gold and repair roads , Set up the town, here will become a bustling industrial zone .Of course, it will bring pollution, will break your calm