【正确答案】 B

【答案解析】[听力原文] 16-20
Man: Does your friend know she must give her pet a rabies shot Q16 before traveling?
Woman: I am not sure.
Man: All pets must have the certificates.
Woman: OK. I will tell her immediately. I have a question.
Man: What?
Woman: Does the flight type have some affects on the pet?
Man: Maybe. As usual, I suggest it is better to take a nonstop Q17 flight.
Woman: Right. And how about the flight time?
Man: I think early morning Q18 or late evening flights are better for pet.
Woman: Do you know what the longest hours for pet on flight are? 10 hours?
Man: I remember some experts suggest the time is about six to eight hours. Q19
Woman: What will happen if the flight is over eight hours?
Man: I don't know. Maybe the pet will have a good sleeping.
Woman: Yeah. Maybe.
Man: Oh, which country will your friend go to?
Woman: Greece.
Man: That's OK. Not too far.
Woman: Yeah.
Man: How will your friend deal with her pet when she arrives at Greece?
Woman: I don't know. Maybe she will carry her pet during traveling.
Man: If she cannot look after her pet, a pet care section Q20 will be a good choice.
Woman: Is it easy to find such section?
Man: Yes. She can phone to hotel in advance. Hotel usually supplies such service.
Woman: Fine. Thank you very much.
Man: You are welcome and best wishes to your friend.

定位词是certificate，考的是在乘坐飞机前宠物必须有什么证。