听力原文：M: Hello. Would you please tell me something about the stock? W: Sure. What do you want me to start with? M: Please start with the explanation of some terms like 'a bull' and 'a bear'. W: OK. A bull is a situation in which share prices are rising. M: What about a bear then? W: A bear is the situation in which share prices keep falling. M: Oh, I see. But why the prices get rising or falling? W: If there are more buyers, the price will rise. Otherwise, the price will be lower and lower. M: How can we make money in the stock market? W: If you believe the market will go up, you can buy in or hang on. If it turns out to be true, you can make your profit. M: I heard that some people can earn money out of a bear market. How do they win in such a situation? W: lf you believe the market will fall down, you can sell your shares and buy back at a lower price. The price difference is your profit. M: It sounds easy to make money from stock investment. W: Not at all. When you really invest in stock market, you'll get involved into the whole world. M: What do you mean by that? W: To decide which share you'll buy in is quite hard sometimes. You have to consider the market tendency, the growth of the company and you'd better know something about technical analysis. M: So boring it is. I'd better invest in some fixed interest fields. W: Certainly you can. You won't suffer from the risks. But your wallet will suffer. M: What should I do? W: If you really invest in stock, perhaps you should find a broker. (20)