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  3. The Internet began in the 1960s as a small network of academic and government computers primarily in volved in research for the

The Internet began in the 1960s as a small network of academic and government computers primarily in volved in research for the

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问题     The Internet began in the 1960s as a small network of academic and government computers primarily in volved in research for the U.S. military. Originally limited to researchers at a handful of universities and government facilities, the Internet has quickly become a worldwide network providing users with information on a range of subjects and allowing them to purchase goods directly from companies via computer. By 1999, 84 million U.S. citizens had access to the Internet at home or work. More and more Americans are paying bills, shopping, ordering airline tickets, and purchasing stocks via computer over the Internet.
     Internet banking is also becoming increasingly popular. With lower overhead costs in terms of staffing and office space, Internet banks are able to offer higher interest rates on deposits and charge lower rates on loans than traditional banks. "Brick and mortar" hanks are increasingly offering online banking services via transactional websites to complement their traditional services. At present, 14 percent of Internet households conduct their banking by means of the Internet, and the figure is expected to double or triple during the next two or three years.
     Increasing commercial use of the Internet has heightened security and privacy concerns. With a credit or debit card, an Internet user can order almost anything from an Internet site and have it delivered to his home or office. Companies doing business over the Internet need sophisticated security measures to protect credit card, bank account, and social security numbers from unauthorized access as they pass across the Internet. Any organization that connects its networks to the global Internet must carefully control the access point to ensure that outsiders cannot disrupt the organization’s internal networks or gain unauthorized access to the organization’s computer systems and data.
What is this text mainly about?
选项 A、Conveniences brought to consumers through use of the Internet.
B、Implications of increasing commercial use of the Internet.
C、Security risks posed by commercial use of the Internet.
D、Advantages of Internet banking versus traditional banking,
答案B
解析 主旨推断题。从文中第二段第一句和第三段第一句可知文章主要介绍计算机技术作为传统银行的补充为商业服务，因此，B选项为正确答案。
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