The search engines work by means of _________.
A、arranging links to the Internet
B、submitting specific search term
C、updating a knowledge database
D、searching engine spiders
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正确答案
试题解析
细节推理题。从最后一段“They, to not categorize links to web places like web directories do but they allow users to’ search the Internet’ using specific search terms.”(它们不像网页目录那样可以将许多信息分类联系在一起,但是它们允许人们使用特定的搜索术语“在网上查找资料”。)得出选项B(submitting specific search terms使用固定的搜索术语)为正确答案。