Numerous other commercial enterprise, from theaters to magazine publishers, from gas and electric utilities to milk processors, bring better and more efficient services to consumers through the use of computers.

　　58. What is this passage mainly about?

　　[A] Approaches to the commercial use of computers.

　　[B] Conveniences brought about by computers in business.

　　[C] Significance of automation in commercial enterprises.

　　[D] Advantages of credit cards in business.

　　[答案] B

　　[解题思路]

　　本题考察的是文章的中心思想。通过文章第二段和第三段的首句“While computers offer these conveniences to consumers, they have many advantages for sellers too”(计算机在为消费者提供诸多方便的同时，也给商家带来很多优势)和“Numerous other commercial enterprise, from theaters to magazine publishers, from gas and electric utilities to milk processors, bring better and more efficient services to consumers through the use of computers”(许多其他商业企业，从剧院到杂志社，从燃气电器公司到牛奶加工厂都通过计算机的使用为消费者提供更好、效率更高的服务)可以看出，本文主要讨论的是计算机给商业带来的便利，因此B为正确答案。D选项与文章第一段有一定联系，但信用卡的例子仅仅是为了引出主要话题，并不是文章关注的重点。而A和C选项都与文章强调“计算机带来的便利”这一侧重点不同。

　　[题目译文]

　　这篇文章的主要内容是什么？

　　[A] 计算机商业化的形式

　　[B] 计算机给商业带来的便利

　　[C] 自动化在商业企业中的重要性

　　[D] 商业中信用卡的优势