2014年1月，中科院物理研究所铁基高温超导研究成果，荣获国家自然科学一等奖．假如人们已研制出常温下的超导体，则可用它制作（　　）

根据短文理解，选择正确答案。

    People can be addicted to(沉溺于) different things — e.g. alcohol, drug, certain foods, or even television. People who have such an addiction are compulsive(强迫的):They have a very powerful psychological（心理上的）need that they feel they must satisfy. According to psychologists, many people are compulsive spenders. They feel that they must spend money. This compulsion, like most others, is impossible to explain reasonably. For compulsive spenders who buy on credit(以赊欠方式), 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 large amounts is actually greater than the pleasure that they get from the things they buy.

    There is even a special psychology of bargain hunting. To save money, of course, most people look for sales, low prices, and discounts. Compulsive bargain hunters, however, often buy things that they don't need just because they are cheap. They want to believe that they are helping their budgets(预算), but they are really playing an exciting game. When they can buy something for less than other people, they feel that they are winning. Most people, experts claim, have two reasons for their behavior: a good reason for the things that they do and the real reason.

    It is not only scientists, of course, 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 values, their beliefs and opinions, and so on in their advertising and sales methods. Psychologists often use a method called “behavior therapy(疗法)” to help individuals solve their personality problems. In the same way, they can help people who feel that they have problems with money.

如图，点A、B、C、D、E都在⊙O上，AC平分∠BAD，且AB∥CE，求证：AD=CE．

读课文《快乐的节日》，读一读，填一填。

____的红领巾，____的衣裳，像朵朵花儿开放。