To enter Class B airspace, such as an approach to a major metropolitan airport, an explicit ATC clearance is required.
需要持有明确的空中交通管制许可才能进入B类空域，如接近一个大都会机场。
B: Take it easy, we still have three hours to get to the airport.
B：别紧张。我们还有三个小时可以去机场。
B No. Luckily my friend picked me up at the airport and gave me a lift home.
B不。幸运的是我的朋友开车到机场接我回家。
What will the boy do this morning? [A] Meet his dad at the airport. [B] Say good-bye to his dad at the airport. [C] Fly to another city together with his dad.
这道题问的是小男孩今天早上要做的事。 从选项中可知，他要去机场，可能是接机、送机，或者跟父亲一起乘飞机走。
What will the boy do this morning? [A] Meet his dad at the airport. [B] Say good-bye to his dad at the airport. [C] Fly to another city together with his dad.
这道题问的是小男孩今天早上要做的事。 从选项中可知，他要去机场，可能是接机、送机，或者跟父亲一起乘飞机走。
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