• 2021-04-14
    7 A. Ray never sends text messages during class. B. Sometimes Ray sends text messages during class. C. Ray sends text messages often during class.
  • C

    内容

    • 0

      Flight seats are usually divided into three classes: first class, business class and economy class.

    • 1

      According to the passage, which of the following categories of travellers will gain most from airline alliances A: Travellers who fly frequently economy class. B: Travellers who fly frequently business class. C: Travellers who fly occasionally during holidays. D: Travellers who fly economy class once in a while.

    • 2

      Online chat is a way of communicating by sending text messages to people in the same chat-room real-time.

    • 3

      中国大学MOOC: Text messages may have some potential problems EXCEPT .

    • 4

      You must practice ______ (speak) English in class and after class.