基本信息
project
课文理解
．this text is written mainly to ________.
．introduce to us how to look for information on the internet
．tell us of the advantages and disadvantages of the internet
．introduce to us several news sources
．warn us to be careful when surfing the internet
．s the difference between search engines and subject directories?
．search engines are built by humans while subject directories are a type of computer program.
．there are perhaps mistakes in information found through search engines while not through subject directories.
．using subject directories takes more time than search engines.
．google is an example of subject directories.
