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(单选题)What does the underlined word “balloon” in Paragraph 1 mean? (单选题)What is mainly discussed in the passage? (单选题)（ ） (单选题)The author has written this passage in order to tell us ____ (单选题)You can try reading an English novel because ______. (单选题)The underlined word “converse” in Paragraph 4 probably means (单选题)In the second paragraph the author seems to suggest that we (单选题)（ ） (单选题)China’s first artificial intelligence (AI) textbook for high (单选题)At the opening ceremony of the new semester, the headmaster