The official guide to the toefl ibt third edition part 56 ppt

Listen to Audio Track 46. Questions 12. What is the lecture mainly about? ɕ How dolphins produce the sounds they make ɕ How dolphins teach their young to identify signature whistles ɕ The professor’s experience with dolphins on a research boat ɕ Various ways dolphins communicate with one another 13. According to a theory the professor mentions, why do dolphins travel side by side? ɕ To view each other’s bubble streams ɕ To hear each other’s signature whistles ɕ To avoid interfering with other dolphins’ sonar clicks ɕ To keep mothers close to their young 14. What does the professor imply about bubble streams? ɕ They help protect dolphins from predators. ɕ Their function is similar to that of signature whistles. ɕ They do not appear to serve a communicative function. ɕ Dolphins use them to sense the movement of the water. 376 TOEFL iBT Practice Test 2 15. Why does the professor mention the time she spent on a boat doing research? ɕ To encourage students to do field work ɕ To inform students about a paper she wrote ɕ To show how scientists collect data on marine life ɕ To illustrate that dolphins are difficult to locate 16. Listen again to part of the lecture by playing Track 47. Then answer the question. What does this example illustrate? ɕ The differences between land and marine mammals ɕ The importance of burst pulses as a way dolphins communicate ɕ One reason dolphins travel in large groups ɕ One way dolphins use signature whistles 377 Listening GO ON TO THE NEXT PAGE g Listen to Audio Track 48. Questions 17. Why does the student go to Professor Kirk’s office? ɕ To find out if he needs to take a certain class to graduate ɕ To respond to Professor Kirk’s invitation ɕ To ask Professor Kirk to be his advisor ɕ To ask Professor Kirk to sign a form 18. Why is the woman surprised at the man’s request? ɕ He has not tried to sign up for Introduction to Biology at the registrar’s office. ɕ He has waited until his senior year to take Introduction to Biology. ɕ A journalism student should not need a biology class. ɕ Professor Kirk no longer teaches Introduction to Biology. 19. What does the man say about his advisor? ɕ She encouraged the man to take a science class. ɕ She encouraged the man to major in journalism. ɕ She is not aware of the man’s problem. ɕ She thinks very highly of Professor Kirk. 378 TOEFL iBT Practice Test 2 20. How will the man probably try to communicate his problem to Professor Kirk? ɕ By calling her ɕ By sending an e-mail to her ɕ By leaving her a note ɕ By visiting her during office hours 21. Listen again to part of the conversation by playing Track 49. Why does the man say this to the woman? ɕ To thank the woman for solving his problem ɕ To politely refuse the woman’s suggestion ɕ To explain why he needs the woman’s help ɕ To show that he understands that the woman is busy 379 Listening GO ON TO THE NEXT PAGE g 380 TOEFL iBT Practice Test 2 Listen to Audio Track 50. Questions 22. What is the lecture mainly about? ɕ Various theories explaining why Mars cannot sustain life ɕ Various causes of geological changes on Mars ɕ The development of views about the nature of Mars ɕ Why it has been difficult to obtain information about Mars 23. According to the professor, what was concluded about Mars after the first spacecraft flew by it in 1965? ɕ It had few geological features of interest. ɕ It was similar to Earth but colder. ɕ It had at one time supported life. ɕ It had water under its surface. 24. What does the professor imply about conditions on Mars billions of years ago? Choose 2 answers. Ȟ Mars was probably even drier than it is today. Ȟ The atmospheric pressure and the temperature may have been higher than they are today. Ȟ Mars was inhabited by organisms that have since become fossilized. Ȟ Large floods were shaping the planet’s surface. 381 Listening GO ON TO THE NEXT PAGE g 25. What is the possible significance of the gullies found on Mars in recent years? ɕ They may indicate current volcanic activity on Mars. ɕ They may indicate that the surface of Mars is becoming increasingly drier. ɕ They may indicate the current existence of water on Mars. ɕ They may hold fossils of organisms that once existed on Mars. 26. Listen again to part of the lecture by playing Track 51. Why does the professor say this? ɕ To stress that Mars is no longer interesting to explore ɕ To describe items that the spacecraft brought back from Mars ɕ To share his interest in the study of fossils ɕ To show how much the view of Mars changed based on new evidence 27. Listen again to part of the lecture by playing Track 52. Why does the student say this: “What were they thinking?” ɕ To ask for clarification of a previous statement ɕ To convey his opinion ɕ To rephrase an earlier question ɕ To express his approval 382 TOEFL iBT Practice Test 2 Listen to Audio Track 53. Questions 28. What does the professor mainly discuss? ɕ The design and creation of the Statue of Liberty ɕ The creators of two colossal statues in the United States ɕ The purpose and symbolism of colossal statues ɕ The cost of colossal statues in ancient versus modern times 29. What evidence does the professor give that supports the idea that modern-day colossal statues are valued social and political symbols? ɕ They are very costly to build. ɕ They are studied in classrooms around the world. ɕ They are designed to last for thousands of years. ɕ They are inspired by great poetry. 30. According to the professor, what was one result of the Great Depression of the 1930’s? ɕ International alliances eroded. ɕ Immigration to the United States increased. ɕ The public experienced a loss of confidence. ɕ The government could no longer provide funds for the arts. . similar to that of signature whistles. ɕ They do not appear to serve a communicative function. ɕ Dolphins use them to sense the movement of the water. 376 TOEFL iBT Practice Test 2 15. Why does the. again to part of the conversation by playing Track 49. Why does the man say this to the woman? ɕ To thank the woman for solving his problem ɕ To politely refuse the woman’s suggestion ɕ To explain. ON TO THE NEXT PAGE g Listen to Audio Track 48. Questions 17. Why does the student go to Professor Kirk’s office? ɕ To find out if he needs to take a certain class to graduate ɕ To respond to