22.【单选题】实践的（）的品格，是实践能够成为检验真理唯一标准的主要根据。

You can check the ____ of Spring Airlines for the flight to Guangzhou.

There are verious ____ of movies on the plane.

Can you tell the ____ between the boarding pass and the ticket?

Which one should be taken out of packed baggage to scan at the security check point?

Why is it advised to take excess clothes off when waiting for security check?

Which is the item that won＇t set off metal detectors?

What do you need to remove at the security check point according to the text?

Which one is NOT the way to find your airline according to the text?

Please go to the ____ level and find the check-in counter.

You need to ____ a hotel room before you travel.