【正确答案】 A

【答案解析】[听力原文] MySpace, the social networking website, is different from other websites which only provide stories about other people. MySpace is a place that allows you to broadcast your own stories and personal information to as many people as you like. Started two years ago, it is a big source of information for and about American kids. Teens are rushing to join the site, not sharing their parents' worries. For teenagers, it is reliable network to keep in touch with their friends. They will often list their surnames, birthdays, school clubs, hobbies and other personal information. 'MySpace is an easy way to reach just about everyone. I don't have all the phone numbers of my acquaintances. But if I want to get in touch with one of them, I could just leave them a message on MySpace,' said Abby Van Wassen, a 16-year-old student. Since each user's personal home page lists the number of their MySpace friends, it has become yet another way of judging high school popularity. MySpace has become something teenagers feel they must have. Parents on the other hand are seriously concerned about the security problems of MySpace. The National Center for Missing and Exploited Children has received at least 288 MySpace-related complaints, according to Mary Beth Buchanan, a lawyer in Pittsburgh. 'Your profile on MySpace shows all your personal information to anyone on the Web. And MySpace even lists this information by birthplace and age. It's like a free checklist for trouble-makers and it endangers children,' Buchanan said. What is the difference between MySpace and other websites? 由选项可知，本题关于It有什么优势或价值。短文开头提到，MySpace与其他网站不同，其他网站只提供别人的故事，而MySpace允许你讲述自己的故事及公布个人信息。只有A与短文内容相符，故正确。 符合“短文开头常出题”的命题规律，而且细节题也常考。过于绝对化的选项通常不会是答案。B、D中含有only一词，故可考虑排除；C在短文中未提及。

【正确答案】 C

【答案解析】[听力原文] What do we learn from the passage about MySpace? 短文提到，由于每位使用者的个人首页会列出其在MySpace中的朋友数目，该网站已经变成了判断自己在中学人气如何的另一种方式。因此，C正确。 短文提到，对青少年来说，它能是与朋友联系的可靠网络，这与A“在线交友是一种可靠的方式”表达的含义不同，该选项只是利用reliable一词进行干扰；青少年通过MySpace可以比较容易地与朋友联系，而不是家长，故B错误；短文中未提及subject scores，故排除D。

【正确答案】 D

【答案解析】[听力原文] What is the security problem of MySpace according to Buchanan? 短文末尾Buchanan说到，MySpace对于那些麻烦制造者就像是一张免费的名册，而这会危及孩子们。D中的do harm to对应短文中的endanger，故D正确。 符合“短文末尾常设考点”的命题规律。文中提到了complaints，但A中的其他信息无法从短文中得出；B、C在短文中未提及。

【正确答案】 B

【答案解析】[听力原文] What does the passage mainly talk about? 短文前半部分提到，青少年很喜欢MySpace网站及其原因(如rushing to join、reliable network、easy way to reach about everyone)；后半部分用On the other hand话锋一转，提到父母们当心MySpace的安全问题及已经出现的状况(如seriously concerned，security problems、complaints、trouble-makers、endangers)。由此可知，青少年与父母对MySpace持有不同的态度，本篇短文主要是在探讨MySpace是好还是坏，故选B。 解答主旨题需要综合、全面地理解文意。短文分别谈到了children及parents，A、C、D都过于片面，不能全面地概括出短文的主旨，故均不正确。