根据《建筑灭火器配置设计规范》（GB50140-2005），火灾种类应根据物质及其燃烧特性划分为以下几类（）
A.A类火灾：指含碳固体可燃物，如木材、棉、毛、麻、纸张等燃烧的火灾
B.B类火灾：指甲、乙、丙类液体，如汽油、煤油、柴油、甲醇、乙醚、丙酮等燃烧的火灾
C.C类火灾：指可燃气体，如煤气、天然气、甲烷、丙烷、乙炔、氢气等燃烧的火灾
D.D类火灾：指可燃金属，如钾、钠、镁、钛、锆、锂、铝镁合金等燃烧的火灾
参考答案：A, B, C, D
Passage Two
| People can be addicted to different things — e.g. alcohol, drugs, certain foods, or even television. People who have such addition are compulsive, i.e. they have a very powerful psychological need that they feel they must spend money. This compulsion, like most others, is irrational — impossible to explain reasonably. For compulsive spenders who buy on credit, charge accounts are even more exciting than money. In other words, compulsive spenders feel that with credit, they can do anything. Their pleasure in spending enormous amounts is actually greater than the pleasure that they get from the things they buy. There is special psychology of bargain hunting. To save money, of course, most people search for sales, low prices and discounts. Compulsive bargain hunters, however, often buy things they don’t need just only because they are cheap. They believe that they are helping their budgets, but they are really playing an exciting game: when they can buy something for less than other people, they feel that they are winners. Most people, experts claim, have two reasons for their behavior: a good reason for things that they do and the real one. Of course, it is not only scientists who understand the psychology of spending habits, but also business people. Stores, companies, and advertisers use psychology to increase business: they consider people’s needs for love, power, or influence, their basic value, their beliefs and opinions, and so on in their advertising and sales methods. Psychologists can often use a method called "behavior therapy" to help individuals solve their personality problems. In the same way, they can help people who feel that they have problems with money. |
What does the passage mainly discuss
A．The use of the psychology of spending money in business.
B．A special psychology of bargaining.
C．A method to help compulsive spenders to solve the problem of money.
D．The psychology of money-spending habits.