【正文】 search through sources ranging from vast databases to small electronicamp。quot。bulletin boards ,amp。quot。where users form discussion groups around mon of the Internets traffic consists of messages sent from one puter user to messages are called electronic mail or e users have electronic addresses that allow them to send and receive e uses of the network include obtaining news,joining electronic debates,and playing electronic feature of the Internet,known as the World Wide Web,provides graphics,audio,and video to enhance the information in its documents cover a vast number of topics.People usually access the Internet with a device called a connect puters to the network through telephone of the Internet operates through worldwide telephone networks of fiberoptic cables contain hairthin strands of glass that carry data as pulses of can transmit thousands of times more data than local phone lines,most of which consist of copper wires.The history of the Internet began in the 1960 that time,the Advanced Research Projects Agency (ARPA)of the United States Department of Defense developed a network of puters called ,ARPAnet connected only military a nd government puter purpose was to make these systems secure in the event of a disaster or after the creation of ARPAnet,universities and other institutions developed their own puter networks eventually were merged with ARPAnet to form the the 1990s,anyone with a puter,modem,and Internet software could link up to the Internet.In the future,the Internet will probably grow more sophisticated as puter technology bees more experts believe the Internet may bee part of a larger network called the information network,still under development,would link puters with telephone panies,cable television stations,and other munication could bank,shop,watch TV,and perform many other activities through the network. 20014 Sex prejudices are based on and justified by the ideology that biology is to this ideology,basic biological and psychological differences exist between the differences require each sex to play a separate role in social are the weaker sexboth physically and ,they are naturally suited,much more so than men,to the performance of domestic duties .A womans place,under normal circumstances,is within the protective environment of the has determined that women play caretaker roles,such as wife and mother and the other hand,men are best suited to go outsintosthe petitive world of work and politics,where serious responsibilities must be taken are to be the providers。women and children areamp。quot。dependents.amp。quot?，餞he ideology also holds that women who wish to work outside the household should naturally fill these jobs that are in line with the special capabilities of their is thus appropriate for women,not men,to be employed as nurses,social workers,elementary school teachers,household helpers,and clerks and secretaries.These positions are simply an extension of womens domestic distinctions betweenamp。quot。womens workamp。quot。andamp。quot。mens workamp。quot。in the labor force,according to the ideology,are simply a functional reflection of the basic differences between the sexes.Finally,the ideology suggests that nature has worked her will in another significant the human species to survive over time,its members must regularly ,women must,whether at home or in the labor force,make the most of their physical appearance.So goes the is,of course,not true that basic biological and psychological differences between the sexes require each to play sexdefined roles in social is ample evidence that sex roles vary from society to society,and those role differences that to exist are largely learned.B(yǎng)ut to the degree people actually believe that biology is destiny and that nature intended for men and women to make different contributions to society,sexdefined roles will be seen as totally acceptable. 20015 In a sense,the new protectionism is not protectionism at all,at least not in the traditional sense of the old protectionism referred only to traderestricting and tradeexpanding devices,such as the tariff or export new protectionism is much broader than this。it includes interventionssintosforeign trade but is not limited to new protectionism,in fact,refers to how the whole of government interventionsintosthe private economy affects international emphasis on trade is still there,thus came the termamp。quot。protection.amp。quot。But what is new is the realization that virtually all government activities can affect international economic relations.The emergence of the new protectionism in the Western world reflects the victory of the interventionist,or welfare economy over the market Tumiler writes,amp。quot。The old protectionism…coexisted,without any apparent intellectual difficulty with the acceptance of the market as a national as well as an international economic distribution mechanismindeed,protectionists as well as (if not more than)free traders stood for laissezfaire(放任政策).Now,as in the 1930s,protectionism