Of all the natural wonders of the world, few are as spectacular as Niagara Falls. Located on the Niagara Riveralong the border between the United States and Canada, Niagara Falls actually consists of two falls, the American Falls and the Horseshoe Falls. The former is on the US side of the border, in the state of New York, while the latter is on the Canadian side. About 85% of the water in Niagara River flows over the Horseshoe Falls, which is the more impressive of the two falls.About 10 million people visit the falls each year, most during the summer tourist season. Sightseers can ridesteamers up close to the boiling water of the falls, or view them from the parks on both sides of the river. Niagara Falls has long been a popular honeymoon destination for newlyweds. Câu 21. Which of the following is entirely on the US side of the border with Canada? A. American Falls B. Niagara River C. Niagara Falls D. Horseshoe Falls Câu 22. It can be inferred from the pasage that Horseshoe Falls _____ A. is the less impressive fall B. is the larger of the two falls C. has 85% of the Niagara River flowing over its edge D. is in the state of New York Câu 23. According to the passage, where can people watch the falls? A. From trains. B. From airplanes. C. From the parks or boats. D. From cars or buses. Câu 24. The word "them" in the second paragraph refers to _____ A. sightseers B. the waterfalls C. the parks D. steamers Câu 25. According to the passage, Niagara Falls _____ . A. generates very hot water B. is a favourite spot of newlyweds C. can be viewed from only one side en Niagara Falls D. is only impressive during the summer tourist season