30. What is the main purpose of the lecture?

Question

BlackTom AI · Accepted Answer

Illustrating the significance of the capital city is the lecture’s primary aim because the speaker presents functions, examples, and effects rather than arguing or criticizing.

1) Relevant knowledge points and concepts
- Purpose types: informative/illustrative (explains and exemplifies), persuasive/arguing (tries to convince), critical/negative (focuses on drawbacks).
- Clues to purpose: overall thesis sentence, supporting details (examples, historical facts, functions), speaker tone (neutral explanatory vs emotive persuasive), presence/absence of recommendations.

2) Step-by-step reasoning
- Identify the thesis: the lecture repeatedly describes roles and importance of a capital (administration, culture, economy), which signals an explanatory focus.
- Examine supporting material: the speaker gives historical background, case studies, and examples showing how capitals influence national identity—these are illustrative devices used to show significance.
- Check tone and intent: the language is descriptive and clarifying, not urging policy change or persuading listeners to adopt a position.
- Look for counterarguments or criticisms: none are emphasized; disadvantages are mentioned only in passing or to provide balance, not as the main focus.

3) Calculations
- Not applicable; this is a comprehension/analytical question so no numeric steps are needed.

4) Why the correct answer is correct
- Option (a) matches because the lecture’s structure and content aim to demonstrate why capital cities matter—what they do and why they are significant—rather than to promote them or condemn them. The speaker’s goal is to illustrate significance through examples and explanation.

5) Why the other options are incorrect
- (b) To argue in favour of capital cities: incorrect because there is no persuasive strategy, no call to action, and no rhetorical appeals designed to convince the audience to adopt a position.
- (c) To highlight the disadvantages of capital cities: incorrect because disadvantages are not the central theme; the lecture focuses on roles and positive impacts.

6) Conclusion
- Therefore the best choice is (a) To illustrate the significance of the capital city, which matches the provided correct answer.

30. What is the main purpose of the lecture?单项选择题

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