2017年10月29日托福听力机经预测

2017年10月29日托福听力机经预测

　　Lecture2

　　标题：Chemistry

　　听力题目：

　　1. What is the main purpose of the lecture?

　　A. To discuss the advantages of heating substances in microwave ovens

　　B. To discuss recent research that may lead to improved microwave ovens

　　C. To point out problems in the use of superheating to produce medicines

　　D. To prepare students for upcoming experiments in the laboratory

　　2. Why does the professor talk about making coffee?

　　A. To describe how he dissolved coffee particles to prevent nucleation

　　B. To introduce the concept of microwave superheating

　　C. To reassure the students that some of the experiments will be as simple as making coffee

　　D. To warn the students not to superheat liquids containing dissolved chemicals

　　3. Why does the professor mention that once nucleation has occurred, added heat is used to convert liquid water into water vapor?

　　A. To explain why the temperature of water does not rise beyond the boiling point when water is heated in a metal pot on a stove

　　B. To point out similarities in heating liquids using microwave ovens and using conventional stoves

　　C. To explain why water that is exposed to microwaves will appear to be hot when it really is not

　　D. To point out that it is better to avoid making coffee in a microwave oven

　　...

　　L3

　　标题：Oceanography

　　听力题目：

　　1. What is the main purpose of the lecture?

　　A. To describe some methods and findings of ocean-acoustics research

　　B. To compare whale songs with other underwater sounds

　　C. To present evidence that climate change is affecting Antarctic ice

　　D. To introduce students to the work of a leading ocean-acoustics researcher

　　2. How does the professor organize the lecture?

　　A. By describing a relatively new scientific discipline, then explaining how it began

　　B. By describing deep-sea biological sounds, then comparing them with geological sounds

　　C. By describing some deep-sea sounds, then discussing the challenge of identifying their source

　　D. By defining interdisciplinary research, then giving an extended example of how it works

　　3. According to the professor, what does Christopher Fox believe is the likely source of Slowdown?

　　A. Airplanes flying low over the ocean

　　B. A volcano on the ocean floor

　　C. Groups of whales migrating

　　D. Ice slipping across land

　　4. What does the professor think may be an important use of ocean-acoustics research?

　　A. It may help researchers identify mysterious sounds in other environments.

　　B. It may provide new information about climate change.

　　C. It may reveal a relationship between earthquakes and underwater volcanoes.

　　D. It may help biologists track whales' migration routes.

　　...

　　L3

　　标题：Film studies

　　听力题目：

　　1. What does the professor mainly discuss?

　　A. How film-editing techniques have changed over time

　　B. The effect of editing on viewers' perceptions of a film

　　C. Differences between fiction films and documentary films

　　D. How Kuleshov's experiences as an actor influenced his filmmaking

　　2. What point does the professor make when he describes a shot of a speaker that cuts to a shot of a crowd?

　　A. Filmmakers have difficulty manipulating time and space within individual scenes.

　　B. Kuleshov's early films used editing more extensively than his later films did.

　　C. Audiences tend to infer relationships between consecutive shots.

　　D. The filming of a crowd and the speaker on different days confused the viewers.

　　3. The professor describes Kuleshov's most famous film experiment. In the experiment, what aspect of the film did the audience praise?

　　A. The actor's ability to portray a variety of different characters

　　B. The actor's ability to express a wide range of feelings

　　C. Kuleshov's use of a popular actor

　　D. Kuleshov's ability to use scenery to create dramatic effects

　　...