请求高手帮个忙。真是很急。求一个PPT 英语的。有关旅游景点介绍一类的题材。。。五分钟左右的~~~谢谢了。

已发请查收~~

这是描述尼加拉河的
The Niagara River is about 56 kilometres (35 miles) long and is the natural outlet from Lake Erie to Lake Ontario. It is one of the world's greatest sources of hydroelectric power.
The elevation between the two lakes is about 99 metres (326), with the half-way point occurring at the Falls.
The total area drained by the Niagara River is approximately 684,000 square kilometres (264,000 square miles).
The average fall from Lake Erie to the beginning of the Upper Niagara Rapids is only 2.7 metres (9 feet)