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金银花抗病原微生物作用的有效成分( )
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With the growth of the Web, many people have come to view the Internet as a handy source of information. Yet there are limits to the depth of the data that can be mined from cyberspace. Ask a search engine that runs on your favorite Web browser to tell you where you can buy a red convertible in Miami for under $35,000. Such a car does exist. But getting the answer on line is a daunting task that often entails multiple searches. Now the Web’s creator, British-born Tim Berners-Lee, has set about solving such problems. The goal is to provide for the automatic exchange of any type of content between many kinds of software programs, applications and databases and, when appropriate, between people. He compares the online situation today with the way things were when the first Web sites were launched almost exactly a decade ago. Before the Web created a Common programming language, accessing each database required users to learn a special set of internal rules, which could be quite arcane. Consequently, only computer mavens bothered to get Internet addresses. But after Berners-Lee developed the "hypertext" system of linking documents and other information with the now-familiar Web tags, his creation became the fastest-growing data gathering system in human history, reaching 30 million active domain names in 2001. Now, history is repeating itself. Berners-Lee has dubbed his new project "the semantic Web." While the coding concepts are complex, the idea behind them is simple enough. The semantic Web would allow programs to browse the Internet and trade data without any direct human intervention. In theory, that could turn all of cyberspace into a unified interactive computer. "The semantic Web represents a long-term goal to change and improve the way in which computers and users work together, as well as the way computers work with other computers," Berners-Lee told a Harvard graduate school seminar the other day. "Instead of searching for words, we search for concepts that tie things together." Berners-Lee and his programming team seek to provide "intelligent agents" the capacity to understand the underlying meaning -- the "semantics" -- of the information they roam through to make their searches more meaningful and efficient. The initial step is to create standards that allow users to add descriptive tags, or "metadata," to Web content, making it easier to pinpoint exactly what you’re looking for. Next, methods will need to be found to enable different programs to relate to metadata from various Web sites. Finally, programmers will be able to craft applications that infer vital facts from the ones they’ve been given. And finding that convertible will be much easier. Which of the following is true of the smarter Web, according to the author of this passage
以下是某C程序段，其功能是计算出某一天是一年中的第几天，请仔细阅读程序并完成要求。 # include＜stdio．h＞ struct days int year； int month； int date； day； void main() struct days *P； int nun=0，i； int met3]=0，31，28，31，30，31，30，31，31，30，31，30，31； P=&day； printf("please input the day：\n")； scanf("%d%d%d"，＆(P-＞year)，＆(P-＞month)，＆(P-＞date))； for(i=0；i＜(p-＞month)；i++) num+=m[i]； hum+=(p-＞date)； if((p-＞year)%4==0&＆(P-＞year)%i00 1=0||(p-＞year)%400==0) if((p-＞month)＞2) num++： printf("This day is%d day in the year．\n"，hum)； 画出此程序主函数的控制流程图。
With the growth of the Web, many people have come to view the Internet as a handy source of information. Yet there are limits to the depth of the data that can be mined from cyberspace. Ask a search engine that runs on your favorite Web browser to tell you where you can buy a red convertible in Miami for under $35,000. Such a car does exist. But getting the answer on line is a daunting task that often entails multiple searches. Now the Web’s creator, British-born Tim Berners-Lee, has set about solving such problems. The goal is to provide for the automatic exchange of any type of content between many kinds of software programs, applications and databases and, when appropriate, between people. He compares the online situation today with the way things were when the first Web sites were launched almost exactly a decade ago. Before the Web created a Common programming language, accessing each database required users to learn a special set of internal rules, which could be quite arcane. Consequently, only computer mavens bothered to get Internet addresses. But after Berners-Lee developed the "hypertext" system of linking documents and other information with the now-familiar Web tags, his creation became the fastest-growing data gathering system in human history, reaching 30 million active domain names in 2001. Now, history is repeating itself. Berners-Lee has dubbed his new project "the semantic Web." While the coding concepts are complex, the idea behind them is simple enough. The semantic Web would allow programs to browse the Internet and trade data without any direct human intervention. In theory, that could turn all of cyberspace into a unified interactive computer. "The semantic Web represents a long-term goal to change and improve the way in which computers and users work together, as well as the way computers work with other computers," Berners-Lee told a Harvard graduate school seminar the other day. "Instead of searching for words, we search for concepts that tie things together." Berners-Lee and his programming team seek to provide "intelligent agents" the capacity to understand the underlying meaning -- the "semantics" -- of the information they roam through to make their searches more meaningful and efficient. The initial step is to create standards that allow users to add descriptive tags, or "metadata," to Web content, making it easier to pinpoint exactly what you’re looking for. Next, methods will need to be found to enable different programs to relate to metadata from various Web sites. Finally, programmers will be able to craft applications that infer vital facts from the ones they’ve been given. And finding that convertible will be much easier. What is the first thing Tim Berners-Lee has to do before establishing the smarter Web
As with any subject, people learn faster when concentration is high and we’re actively interested in learning. Being interested and relaxed helps too. In intensely verbal courses the teachers are most effective when they act as a facilitator. Their prime task is to grab attention, help make sure that the activities are interesting and provide background information, which helps students to actively participate in the lesson and plan and implement effective, complimentary home study programs. The student is responsible for keeping himself or herself "Under Pressure" in the ways mentioned above. Of course this requires that students understand the types of pressure they should take upon themselves and when to back off. Imposed pressure is different in quality to self-imposed pressure, and it is the latter which is appropriate for adult learners, and children too, I suspect. In the typical actively verbal language class, understanding of the processes needed for effective language acquisition is necessarily inferred by the students. Communicating clearly with everyone in the class is difficult enough, so talking about why an activity is useful is quite likely to confuse and bemuse rather than enlighten students in a language course. For this reason transparent, open-ended activities with clear task goals form the foundation of any intensely verbal course. In other words, short demonstrations are followed by pair and group work doing the demonstrated activity and it is up to the students to make sure they involve themselves while the teacher is trying to target the activities so they are appropriae, allowing the students to discover for themselves ways in which the activity helps achieve their language target. Making activities appropriate is the key, meaning that students should be able to quickly realize that they can vary and extend what they are doing -- that the example is a starting point, not a prescriptive pattern but a working start point which points them in a direction for exploration. When teachers are mentioned to act as a facilitator, they should be acting ______.
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