阿正知道,H中一共有18000多名学生,其中8000名学生拥有自行车,这8000名学生的车子如果须要维修,他们会把车子推到学校马路对面的修车铺去。修车铺的老板“黑光”很黑心,比如补一贴内胎的市场价是两元,他却收5元。但没办法,这是学校方圆半百里内唯一的一家修车铺——政治老师说,这叫市场经济。但阿正还是想不明白,为什么黑光的生意会那么好呢?每天 Ah Hsiah knew there were a total of more than 18,000 students in H and 8,000 of them had bikes. If the 8,000 students needed a car, they would push the car to the garage across the road from the school. Repair shop owner “black ” very black heart, such as make up a tube inner market price is two yuan, he received 5 yuan. But no other way, this is the only garage in the school radius of a hundred miles. The political teacher said this is called a market economy. But Ah still still do not understand why the black business will be so good? Every day