(31)In many cases, today's best games use the graphics technology 句子组成: In many cases表示在许多情况下 翻译:在许多情 (32) In many companies, presenting information to business professionals is a required form of communication 句子组成: presenting information to business professionals是动名词短语做主语。 翻译:在许多公司中,向商业人员演示信息是一种必需的通信形式。 (33)Multimedia has many uses, and the only limitation is your imagination 句子组成: the only limitation为第二句中的主语 翻译:显然多媒体有许多用途,惟一的局限是你的想像力。 4. Reading comprehension Since World War Il, computer scientists have tried to develop techniques that would allow computers to act more like humans. The entire research effort including decision-making systems obotic devices, and various approaches to computer speech, is usually called artificial intelligence (AI). Most Al efforts remain in the research labs. A collection of Al techniques that enables computers to assist people in analyzing problems and making decisions, called knowledge-based expert systems, however, has recently proved its value, and numerous commercial applications are now underway. Expert systems are being developed to assist manages with complex hardware, and aid mechanics in troubleshooting locomotive problems As recently as 1980, expert systems research was still confined to a few university laboratories. Today, the United States, Japan, England, and the European Economic Community are all in the process of launching major research programs to develop and implement expert systems in the near future. Many Fortune 500 corporations are assembling Al departments, venture capitalists are rushing to invest in entrepreneurial expert system com systems technology is well on its way to commercial success Answer the following questions according to the article above (34)What does the passage mainly discuss Als development (35)According to the passage, we know that Al is artificial intelligence (36) What does the"knowledge-based expert systems"mean? al techniques enable computers to assist people in analvzing problems and making decisions (37)Is expert systems research still confined to a university research laboratories? Text 3 Digital Video Exercises 5. Fill in the blanks (38)A major goal of the MPEG-2 standard is to define the format of the video data. (39) Video applications deal with so called color spaces in order to define images (40)There are two major color spaces types used in digital video: RGB and(31) In many cases, today’s best games use the graphics technology. 句子组成：__in many cases 表示在许多情况下 翻译：_在许多情况下，当今最好的游戏软件使用图形技术。 (32) In many companies, presenting information to business professionals is a required form of communication. 句子组成：_ presenting information to business professionals 是动名词短语做主语。 翻译：__在许多公司中，向商业人员演示信息是一种必需的通信形式。 (33) Multimedia has many uses, and the only limitation is your imagination. 句子组成：_the only limitation 为第二句中的主语 翻译：_显然多媒体有许多用途，惟一的局限是你的想像力。 4. Reading comprehension. Since World War II, computer scientists have tried to develop techniques that would allow computers to act more like humans. The entire research effort, including decision-making systems, robotic devices, and various approaches to computer speech, is usually called artificial intelligence (AI). Most AI efforts remain in the research labs. A collection of AI techniques that enables computers to assist people in analyzing problems and making decisions, called knowledge-based expert systems, however, has recently proved its value, and numerous commercial applications are now underway. Expert systems are being developed to assist manages with complex hardware, and aid mechanics in troubleshooting locomotive problems. As recently as 1980, expert systems research was still confined to a few university research laboratories. Today, the United States, Japan, England, and the European Economic Community are all in the process of launching major research programs to develop and implement expert systems in the near future. Many Fortune 500 corporations are assembling AI departments, venture capitalists are rushing to invest in entrepreneurial expert system companies, and expert systems technology is well on its way to commercial success. Answer the following questions according to the article above. (34) What does the passage mainly discuss ? __AI’s development (35) According to the passage, we know that AI is _artificial intelligence (36) What does the “knowledge-based expert systems” mean? _AI techniques enable computers to assist people in analyzing problems and making decisions (37) Is expert systems research still confined to a university research laboratories? __No Text 3 Digital Video Exercises 5. Fill in the blanks. (38) A major goal of the MPEG-2_ standard is to define the format of the video data. (39) _Video applications deal with so called color spaces in order to define images. (40) There are two major color spaces types used in digital video: RGB_ and