【正确答案】 A

【答案解析】[听力原文]
   Cyberspace is changing the world. It makes our lives more convenient. Through the Internet, people may find information, play games, and share hobbies; others buy and sell products; still others search for friendship, find someone to talk with. Is it different from the usual ways of making friends? Of course, unlike the real world, one's knowledge about a person is limited to worlds on a computer screen. Identity and appearance mean very little in cyberspace. However, a person's thoughts or at least the thought they type are really of importance, and so even the shyest person can become a chat room star. Usually this faceless communication doesn't cause problems. Identity doesn't really matter when you enter a chat room, discussing politics or hobbies. In fact, this value on the ideas themselves makes the Internet a great place for exciting conversation. Where else can so many people come together to chat about their interests?
   What is very important when you chat with someone online?