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今日话题：What are the benefit and drawback of using robots? Please include details in your answer. 

解题方案：好坏对比法+5Ws+ Effects

解题思路：5Ws+Result

What is the benefit of using robots?

Andy: It can save lives.

When?Where?Who invented What?

Andy: Recently, doctors from the US have invented nanorobots（纳米机器人).

Why do we use it?

Andy: Coz it can do some jobs that humans cannot do.

What can they do?

Andy:   First, they can go into the bloodstream（血液） and produce some chemicals（化学物质） to identify （识别）and fight against some diseases like cancer（癌症）, tumor （肿瘤） or viruses （病毒）. 

            Also, it can be used to repair DNA, RNA and some cells（细胞）.

What is the effect? 

Andy:  It will save millions of lives.

What is the drawback of it?

Andy: It might replace lots of workers in the factory, since it’s really cheap and efficient, thus human labors will lose jobs. So in order to keep people employed, we won’t allow robots to take over the world. 

示例答案

Well, the benefit of using robots is that it can save lives. For example, recently, doctors from the US have invented nanorobots. What they can do is first, they can go into the bloodstream and produce some chemicals to identify and fight against some diseases like cancer, tumor or viruses.  Also, it can be used to repair DNA, RNA and some cells. This is definitely going to save millions of lives.

However, the drawback is that it might replace lots of workers in the factory, since it’s really cheap and efficient, thus human labors will lose jobs. 

依此类推：

Are robots going to take over the world?

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Andy, 资深原新东方口语名师，主教托福，雅思口语以及美式发音课程。对英语口语教学有多年研究，拥有一套独特的口语教学方法，多次带出高分学员甚至满分学员。因获得集团教师大赛第三名，被送至伦敦International House 作为访问学者。上课内容丰富生动，多样的教学法和互动方式让学生在开心地学习中获得必要的技能。

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