用英文写作 急

Building a zoo brings many advantages.
Firstly, a zoo is a place where animals,especially some species close to extinction,can be protected from being hunted and get medical treatment when they are ill.
Secondly, animals kept in the zoo can provide samples of scientific research which can help improve our biological knowledge.
Last but not least, a zoo is an tourist attraction.People spend money buying tickets to enjoy a pleasant trip around animals from all over the world.It not only widens people's sight, but also contributes to the economy.
In a word, it is of great advantage to build a zoo.