根据语境，用恰当的语言完成对话。

(After the graduation ceremony, Kang Kang and Li Ming are talking about their summer vacation plans at home.)

Kang Kang = K        Li Ming = L

K: Hey, Li Ming. Summer vacation is coming. What are you going to do this special summer vacation?

L: 1.___________. My sister works in a clothes factory there, I hear it is a modern, beautiful developed city.

K: Sounds great. 2.____________?

L: Since last year. She has been working there after her graduation.

K: 3.___________?

L: By train. You know Wuguang Express works well, people from Wuhan can take Wuguang Express there.

K: 4____________?

L: About three hours. More and more people prefer to go there by express.

K: That's right. 5______________?

L: In half a month. My parents will go and see my sister with me.

K: Have a good trip.

L: Many thanks.

为避开离场喷气飞机起飞时产生翼尖涡流，飞行员应当采取什么措施？（）

A.在刚好滑进喷气飞机飞行路径的那一点时抬轮

B.爬升并且保持在喷气飞机飞行路径上方

C.保持牌喷气飞机飞行路径下方