1、Which one of the search engines impressed you most?Why?List other search engines which you are familiar with.,May 1,2023,4,Background Information SEO（search engine optimization）即搜索引擎优化，主要是通过对网站的结构和内容等方面的优化，使搜索引擎更容易搜索网站的内容，并且使网站的各个网页在搜索引擎中获得较高的评分，从而获得较好的排名。从事这方面工作的人就是search engine optimizer，即搜索引擎优化师。
2、,May 1,2023,5,The life span of a Google query normally lasts less than half a second,yet involves a number of different steps that must be completed before results can be delivered to a person seeking information.The main steps are as follows:,Background Information,May 1,2023,6,Text AnalysisPrincip
3、les and Optimization of Search Engine Potential customers find Web sites in many different ways.Some site visitors are recommended by friends,some are referred by other Web sites,some see the sites URL in a print advertisement or on television,and others arrive after typing a URL that is similar to
4、the companys name.（译文）But many site visitors are guided to the site by a search engine.,May 1,2023,7,Text AnalysisPrinciples of Search Engine A search engine is a Web site that helps people to find things on the Web.It contains three major parts.The first part,called a spider,a crawler,or a robot,is
5、 a program that automatically searches the Web to find Web pages that might be interesting to people 1.When the spider finds a Web page that might interest search engine site visitors,it collects the URL of the page and some information contained on the page.（译文）The information might include the pag
6、es title,key words included in the pages text and information about other pages on that Web site.,May 1,2023,8,Text Analysis The spider returns the information to the second part of the search engine called index to be stored 2.The index checks to see whether the information about the Web page has a
7、lready been stored.If it has,the index compares the stored information with the new information and determines whether to update the stored information or not.The index is designed to allow fast search of its large amount of stored information.（译文）,May 1,2023,9,Text Analysis The third part of the se
8、arch engine is the search utility.Visitors to the search engine site provide search terms,and the search utility takes those terms and finds entries for Web pages in its index that match those search terms.（译文）The search utility is a program that creates a Web page of a list of links to URLs found i
9、n its index that match the site visitors search terms.3 The visitor can then click the links to visit those sites.,May 1,2023,10,Text AnalysisSearch Engine Optimization The combined technology and strategy of having a particular URL listed near the top of search results is called search engine optim
10、ization（SEO）.（译文）For sites that obtain most of their visitors from search engines,a high ranking which places their URLs near the top of the list of links returned by the search engine is extremely important.The content and design of a Web site are very important to SEO.In addition,an increasing num
11、ber of search engine sites offer companies paid positioning which is the option of purchasing a top listing on search result pages for a particular set of search terms.（译文）,May 1,2023,11,Text Analysis Search engine optimization is a complex subject.A number of consulting firms do nothing but advise
12、companies on it.Plenty of books have been written on this subject,and several major conferences are devoted to this subject each year.（译文）,May 1,2023,12,The Key to Exercises:Reading comprehension 1 F（2）T（3）F（4）F（5）T,May 1,2023,13,The Key to Exercises:Reading comprehension 2,（1）Some site visitors are
13、 recommended by friends,some are referred by other Web sites,some see the sites URL in a print advertisement or on television,others arrive after typing a URL that is similar to the companys name.But many site visitors are guided to the site by a search engine.（2）A search engine contains a spider,an
14、 index and a search utility,May 1,2023,14,The Key to Exercises:Reading comprehension 2（3）The information might include the pages title,key words included in the pages text and information about other pages on that Web site.（4）The combined technology and strategy of having a particular URL listed nea
15、r the top of search results is called search engine optimization.（5）For sites that obtain most of their visitors from search engines,search engine optimization is very important.,May 1,2023,15,The Key to Exercises:Vocabulary,A5 B2 C3 D6 E7 F1 G4,May 1,2023,16,The Key to Exercises:Translation 1（1）有些访
16、问者是朋友推荐来的，有些是其它网站推荐来的，有些是看到了印刷广告或电视上公司的网址，有些是直接输入了类似公司名称的网址找来的。（2）当网络蜘蛛找到搜索引擎访问者可能感兴趣的内容时，它就收集页面的URL和页面上的信息。（3）越来越多的搜索引擎网站提供付费搜索引擎排名服务，即企业购买特定关键词从而在搜索结果页面中排名靠前。（4）有很多专门论述该专题的书，每年还有几次针对该专题而举办的大型会议。,May 1,2023,17,The Key to Exercises:Translation 2（1）find Web sites in many different ways（2）be guided to
17、 the site by a search engine（3）automatically search the Web（4）information about other pages on that Web site（5）compare the stored information with the new information（6）fast search of large amount of stored information（7）find entries for Web pages in the index that match those search terms（8）click t
18、he links to visit those sites（9）near the top of search results（10）do nothing but advise companies on SEO,May 1,2023,18,The Key to Exercises:Reading Material,1.B 2.A 3.D 4.C 5.C,May 1,2023,19,Word Studyautomaticallyadv.自动地The new monitor apparatus is automatically controlled.这套新的监护仪是自动控制的。,May 1,2023
19、,20,Some site visitors are recommended by friends,some are referred by other Web sites,some see the sites URL in a print advertisement or on television,and others arrive after typing a URL that is similar to the companys name.有些访问者是朋友推荐来的，有些是其它网站推荐来的，有些是看到了印刷广告或电视上公司的网址，有些是直接输入了类似公司名称的网址找来的。,May 1,2
20、023,21,When the spider finds a Web page that might interest search engine site visitors,it collects the URL of the page and some information contained on the page.当网络蜘蛛找到搜索引擎访问者可能感兴趣的内容时，它就收集页面的URL和页面上的信息。,May 1,2023,22,The index is designed to allow fast search of its large amount of stored informa
21、tion.索引程序的作用是对存储的大量信息进行快速检索。,May 1,2023,23,Visitors to the search engine site provide search terms,and the search utility takes those terms and finds entries for Web pages in its index that match those search terms.当搜索引擎网站的访问者输入搜索条件时，搜索工具就从索引里找到与搜索条件相匹配的页面条目。,May 1,2023,24,The combined technology an
22、d strategy of having a particular URL listed near the top of search results is called search engine optimization（SEO）.使特定URL地址出现在搜索结果中靠前部分的技术和策略称为搜索引擎优化（SEO）。,May 1,2023,25,In addition,an increasing number of search engine sites offer companies paid positioning which is the option of purchasing a top listing on search result pages for a particular set of search terms.此外，越来越多的搜索引擎网站提供付费搜索引擎排名服务，即企业购买特定关键词从而在搜索结果页面中排名靠前。,May 1,2023,26,Plenty of books have been written on this subject,and several major conferences are devoted to this subject each year.有很多专门论述该专题的书，每年还有几次针对此专题而举办的大型会议。,
