英语初二完形填空题谁会,surprise,discover,wind,change,it,flow,dry,take,h

英语初二完形填空题谁会,
surprise,discover,wind,change,it,flow,dry,take,however,see
Niagara Falls is in New York State.It is a popular tourist place.Every minute 500,000 tons of water 46.______ over a cliff (悬崖 ) into the river below.This is very beautiful.
The Falls was 47._____in l768.Before that it had never stopped flowing.48.______,this happened on March 29,1848.People could not believe it!They were so 49.____that they all ran to the Falls.To their surprise,there was only the great cliff with no water going over 50.___.Some people began to pray.Some people walked on the 51.___river bottom below.
Luckily,it 52.____almost 30 hours for the water to start flowing again.Why did the water stop?Strong 53.___and heavy icebergs blocked off(阻挡) the water that came from Lake Erie.When the wind 54.___and the water from Lake Erie flowed again,people could 55._____the beautiful Falls once more.