题目原文：
Communal online encyclopedias represent one of the latest resources to be found on the Internet. They are in many respects like traditional printed encyclopedias collections of articles on various subjects. What is specific to these online encyclopedias, however, is that any Internet user can contribute a new article or make an editorial change in an existing one. As a result, the encyclopedia is authored by the whole community of Internet users. The idea might sound attractive, but the communal online encyclopedias have several important problems that make them much less valuable than traditional, printed encyclopedias.
First, contributors to a communal online encyclopedia often lack academic credentials, thereby making their contributions partially informed at best and downright inaccurate in many cases. Traditional encyclopedias are written by trained experts who adhere to standards of academic rigor that nonspecialists cannot really achieve.
Second, even if the original entry in the online encyclopedia is correct, the communal nature of these online encyclopedias gives unscrupulous users and vandals or hackers the opportunity to fabricate, delete, and corrupt information in the encyclopedia. Once changes have been made to the original text, an unsuspecting user cannot tell the entry has been tampered with. None of this is possible with a traditional encyclopedia.
Third, the communal encyclopedias focus too frequently, and in too great a depth, on trivial and popular topics, which creates a false impression of what is important and what is not. A child doing research for a school project may discover that a major historical event receives as much attention in anonline encyclopedia as, say, a single long-running television program. The traditional encyclopedia provides a considered view of what topics to include or exclude and contains a sense of proportion that online “democratic” communal encyclopedias do not.
题目音频：
学术写作：
大意：
购买商品的时候，怎么做决定？朋友推荐OR网上搜索？
详细原题回忆版：
教授
Let’s continue talking about consumer behavior. We have been discussing different ways people go about choosing what products to buy, and there are many potential sources of information and advice for consumers. In your opinion, which is the better strategy for making purchasing decisions, relying on advice from friends and family, or depending on information from online sources? Why?
Claire
Asking friends and family members for product recommendations might seem like an easier option, but it might take too much time to get all the information you need. An internet search would be much more efficient. There are many consumer magazines available online that compile lots of data to compare the advantages and disadvantages of one product versus another.
Paul
The last time I bought a computer, I just watched a few videos online to make a decision, and now I regret that. My friends could have advised me better because they know my preferences and the kind of features that I am interested in. Consumers should get advice from the people around them to find the most suitable products.
答案请付费后查阅：
