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文中应适当增加从句和长难句的使用；作者词汇表达比较多样，也能较好的使用一些学术词汇；衔接成分太少，文章结构欠佳。
Nowadays,human activities have great impact on plants and the animal species.Some of them are good for the preservation of plants and animal species,others are bad for them. For the good part,some of the human activities is for preservation of the valuable plants and animal species.For example,in China we have preservation bases for the Pandas,which now saved a lot of wild pandas' lives.Some activities help us to know the kinds and number we have in this planet.Scientists often go to the forests to observe the endangered kinds of plants and animals,to calculate the number and the kinds.In that way,we can have a full knowledge of endangered plants and animals.We can have so many examples for the good deeds which human makes for a better planet in the reality. However,we also have the bad side of it.We human always so desparate to persuit the economic benefit that we ruin what the Nature Mother gives us.Water pollution,gas emissions,deforrestation are the most common things we can see from our daily life. We should keep on the good aspects of our deeds and improve our bad things in future.In that way,we can have a continuous development.
