Passage One Questions 21 to 25 are based on the following passage.
　　Even though the Internet has become a key tool for accessing services, getting an education, finding jobs, getting the news, keeping up with people you know and much more, one in five U.S. adults still does not use the Internet at all, according to a recent report. Why? Mostly they're just not interested in anything that happens online. "Among today's non-Internet users, almost half (48%) say the main reason they don't go online now is that they think the Internet has nothing to do with them—often saying they don't want to use the Internet and don,'t need to use it to get information or to communicate with others, "said the report. Other reasons were that they don't have a computer or that it's too expensive, too difficult, or a waste of time. Most Americans who don' t go online now have never gone online before- and no one else in their family uses the Internet. Just over 20% of non-users say they know enough about technology to start going online if they want to, and only 10% say they may use the Internet or e-mail in the future. Who are these non-Internet users? Mostly they're older—56% of U.S. seniors don't go online. Also, nearly 60% of U.S. adults who never completed high school don' t use the Internet. And they're mostly poor- nearly 40% of people with a family income under $30,000 per year don't go online. Also, people with disabilities are more likely not to use the Internet. One quarter of U.S. adults live with a disability that interferes with activities of daily life-and only 54% of these people are Internet users, said the report. But in terms of ethnicity(种族), the U. S. digital divide has narrowed. According to the report, between white people and minorities, the difference in getting access to the Internet is disappearing. In terms of adults who have high-speed broadband(宽带)at home, differences in access still exist, but they have become much less obvious over the years.