题目:some people think that in urban areas, old buildings should be destroyed

and replaced with modern buildings. Others, however, argue that old buildings in

cities should be protected. Discuss both these views and give your own

opinion.

正文：In modern cities, old buildings are everywhere while new buildings are

built every day. Some people think that old buildings should be replaced by modern

buildings(避免重复应该用: ones),but others think that these buildings should be protected.

One of the main reasons for destroying old buildings is the dramatically

growing population in urban area. Most of old buildings are six floors high, by

comparison, the new buildings are twice as high as the olds. So the new buildings

can (hold more people to live in 要改为: provide people with more living space). Another reason is that a large number of old

buildings are (可以加上structurally) unsafe. The methods and materials they used to build the buildings

are(were) not advanced. And the pipes and wire(wires) in the buildings are too old for people

to live. People must spend plenty of money to fix them for the frequent

damage(damages).

On the other hand, however, some old biildings(buildings) are gorgeous(可以如楼上朋友的建议用: uniquely built 但不改也没有问题。) and very

difficult to copy, such as the Forbidden City. These buildings attract millions

of tourists to visit every year. It brings us a sense of national pride and

government can gain a huge amount of economic profits which coule(could) be used to

support medical services and education.

In conclusion, although modern technology has brought us many remarkable

buildings, some old building(buildings) are as precious as them. Therefore, the buildings of

historical importance and high artistic value should be protected. Other

buildings which are dangerous and may cause problems should be destroyed.

文章写得极好，只有少许错漏，已替你更正好了。

很希望我的回答会对你有帮助。如有不明白，可以再追问，若满意请采纳，谢谢你，并祝你进步!