Tham khảo tài liệu 'toefl ibt internet based test 2006 - 2007 part 90', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | EXPLANATORY OR EXAMPLE ANSWERS AND AUDIO SCRIPTS FOR MODEL TESTS MODEL TEST 7 763 Û48 Ellen So you re saying that string theory requires further developments Professor Blake What do you think Jim O49 Well I tend to be an empirical scientist. I m a biology major and I just want to take something into the lab and dissect II. Professor Blake Fair enough. Ellen Q5o But I m a physics major and . the idea of a theory of everything appeals to me. I know that we cant observe strings . yet. but maybe that s just a problem with the technology and . and eventually we may be able to observe strings in the laboratory or. or we could find a way to observe strings in a natural setting and . Jim Come on. It s just conjecture. Professor Blake Well in fairness any new theory has to begin as conjecture but the real question is can string theory pass through the developmental stages to a point where it can be verified or rejected. And uh these developments could be in the area of technology like Ellen suggests or perhaps they could be new methods of performing calculations and uh. deriving the mathematical predictions. What I m going to suggest is that we take a look at the web site that supplements your textbook. There are videos as well as animations and it includes a really good history of string theory uh but that s not why I want you to see it. I think the site demonstrates where we need to go from here if we re going to pursue an ultimate 05 1 theory a a theory of everything if you will And it s fairly objective so it should provide us with some ---- Interesting data for both sides of the debate. Audio 46. What is the discussion mainly about Answer A The theory of everything Audio 47. How does the professor explain the closed string Answer C He compares it with a thin rubber band. Audio 48. Listen again to part of the discussion and then answer the following question. Replay So you re saying that string theory requires further developments What do you think Audio Why does the .
