Test analysis: According to the different transaction methods, it can be divided into goods consumption in Qian Qing, loan consumption and lease consumption. According to the different contents of the transaction, it can be divided into labor consumption and tangible commodity consumption. According to the different purposes of the transaction, it can be divided into survival consumption, development consumption and enjoyment consumption. From the purpose of consumption, the consumption of primary and secondary school students attending various training courses belongs to the consumption of development materials. Therefore, this question chooses item C.
Comments: The key to answering this question correctly is to find out the type of consumption. Then analyze and eliminate them item by item. This question is moderately difficult. Remember the differences between several types of consumption. Is the key to solve this problem.