英语演讲ppt 关于“最好的发明”。急需！！！

只能给你大纲，没有完成的文章，你可以根据以下内容，打开思路，做一点观点上的发展。
Advantages of Powerpoint:
>If you get lost, you can casually look at the powerpoint for guidance
>People can register the info more as they can observe the PPT
>Images and good Presentation can make the PPT more engaging
>Good for Reference at the end, if they ask questions
>Looks more professional
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1. to show your point in a manner people can see visually

2. to make you less nervous since they will be looking at the powerpoint presentation not you

3. to show you supporting material in a way people can see

4. to help you sell you idea