单项选择题
Passage Two Questions 30 to 32 are based on the passage you have just heard.
A. Research assistants. B. Magazine publishers. C. Careless authors. D. Inexperienced students.
A. Its large number of bicycle clubs. B. Its geographic variety. C. Its network of superhighways. D. Its mild climate.
A. They came from the original wing. B. They’re made of the same material. C. They’re similar in shape. D. They were designed by the same person.