A、Air traffic problems. B、Safety improvement. C、The number of the flights. D、Flight training courses. B从“Travelers face a paraly

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问题  
W: Could you have my car ready at 5:00, please.
M: Sure, the damage is minor.
Q: Where did this conversation probably take place?
W: As you know, the sky has become ever more crowded. I think, the standards of training must be raised among flight crews and air traffic controllers.
M: There is an urge need to raise levels of air safety throughout the work. Travelers face a paralyzed future unless air safety improves.
Q: What is mainly discussed in the conversation?

选项 A、Air traffic problems.
B、Safety improvement.
C、The number of the flights.
D、Flight training courses.

答案B

解析 从“Travelers face a paralyzed future unless air safety improves.”可知主要是安全问题。
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