听力原文：W: Hi, John. M: Hi, Jenny. W: One of the issues today is the digital divide. What does it mean? M: It refers to the divide between who is online and who isn't. W: What's the nature of the breakdown? Who are they saying is online and who isn't? M: They are looking at three principal portions of the American population with regard to the ethnic gap, the income gap and also different age groups. W: What do they discover? M: They find that today 30% of African Americans, 33% of Hispanic Americans, and 47% of White Americans, are online, but the largest portion of the American population are Asian Americans with 65% online. W: Do they offer any explanations about why this might be? M: Well, one reason of course is income. The low income population's use of the Internet is less, For example, for those who earn ＄75000 annually, over 70% have computers lined to the Internet. W: Well, computers are still a fairly pricey item, although prices are coming down. M: But they're predicting that within five years double the amount of people will be using them. W: Going back, to this digital divide, do men and women use the Internet equally? Is there a gender divide? M: No. Not only is there not a gender divide but the prediction is this year more women will be online than men. W: Really? M: But the difference here is the sites they visit. Men are interested in financial and technology sites. Women tend to prefer sites dealing with more personal matters. For instance, they want to find out about women's health. So while both men and women are online, there is a difference in what they go online for. W: Yeah. Interesting. What did the study say about the future growth? M: Well, they're forecasting that three quarters of the country will be online within five years. W: That's fast, isn't it? M: Sure. We'd better get involved. W: Right. What is the main idea of the dialogue?