Perform as a tour leader. Immediately after getting on board of a flight, you ask a flight attendant on how to use mobile devices on board. (机上,询问乘务员如何使用手机设备) Your dialogue with the attendant will include the following parts: A. Can mobile devices on airplane mode be used during the whole flight; B. Ask the policy of using mobile device during take-off and landing stage; C. Make sure electronic devices cover smartphone, tablet, wearable and so on. 参考回答: Excuse me, sir/madam. Can mobile devices on airplane mode be used during the whole flight ? Oh yes, thank you! May I ask about the policy of using mobile device during take-off and landing stage? And do electronic devices cover smartphone, tablet, wearable and so on? Okay, thank you very much!