The Popular Science Knowledge and Science Technology
历史上有很多发明，起着很重要的作用，其中一些改变了世界。依你之见，什么是最重要的发明，并说明原因，也就是它起的作用(不少于三点)。80词左右。
【参考范文】
The Most Helpful Invention
There are a lot of inventions in the history. Some of them play an important role in people’s life and some have greatly changed the world.
In my opinion, I think the most important invention is the car. First, people used to travel by train or by plane. But now, they can go any place by car. Second, when holiday comes, they can visit their family and friends by car. Third, they can also go to many places of interest to enjoy themselves.
In a word, I do agree that cars are the most important invention.
【参考译文】
最有用的发明
历史上有许多发明。他们中的一些人在人们的生活中起着重要的作用，有些人改变了世界。
在我看来，我认为最重要的发明是汽车。首先，人们过去乘火车或飞机旅行。但现在，他们可以去任何地方的汽车。第二，当假期来临时，他们可以开车去拜访家人和朋友。第三，他们也可以去许多有趣的地方享受自己。
总之，我同意汽车是最重要的发明。