Open class teaching, as a special way of classroom teaching in the basic education, is entitled with many functions such as communication, research, evaluation and competition.

公开教学作为一种特殊的课堂教学形式，在中小学的教学活动中被赋予了交流、研究、示范、考核、竞赛等诸多的功能。

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The instant communication of the chat room system has met the need that many people chat at the same time, and people can converse in an easy way on one page.

聊天室系统的即时交流方式满足了网络中多人同时聊天交流的需求，使得较多的人在同一个聊天页面停止交流变得便当，简单。

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However, many English learners, when involved in face-to-face interaction, often pay more attention to one-way presentation rather than to interactive communication.

但是，许多英语学习者常常只注重交际过程中的单向表达，忽视了双向沟通，即互动交际。

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