A
Golden Gate Bridge
Located in San Francisco, the Golden Gate Bridge started in the year 1933 to connect the San Francisco Peninsula with Marin County. It was finally thrown open to public traffic in 1937.It cost $25.7 million in the construction. Till the year 1957, the Golden Gate Bridge, at a length of 2,737 meters, was the longest suspension bridge in the world.
Brooklyn Bridge
The Brooklyn Bridge is located in Brooklyn. It is one of the oldest suspension bridges in the United States, having been opened in the year 1883.The length of the bridge is 1,843 meters. The bridge has been featured in several Hollywood movies.
George Washington Bridge
Also known as the Hudson River Bridge and the Columbus Bridge, the George Washington Bridge which connects Fort Lee to Manhattan came into use in 1931 after a construction period of almost 4 years. It is a two level suspension bridge that cost about $52 million to build.
Mackinac Bridge
This is the third biggest suspension bridge in the world at a length of 8,038 meters. The architect of this bridge was Dr. David B. Steinman who directed the construction of the bridge which started in the year 1054 and opened to the public in 1958.People using this bridge are charged a certain amount of money.
Navajo Bridge
Located in Arizona, this bridge crosses the Colorado River and is almost 250 meters long. The construction of this bridge started in the year 1927, ending two years later, costing $390,000.In the 1990s a second bridge was built which was opened to the public in 1994.The first bridge is now used only by pedestrians.
21. What do we know about the Golden Gate Bridge?
A. It consists of two bridges.
B. It costs the least of the five bridges.
C. It is the longest suspension bridge in the world.
D. It takes about 4 years to complete the construction.
【答案】D
【解析】本文主要介绍了金门大桥;布鲁克林大桥;乔治华盛顿大桥;麦克纳克大桥;纳瓦霍桥这五座大桥。
细节理解题，根据：“the Golden Gate Bridge started in the year 1933 to connect the San Francisco Peninsula with Marin County. It was finally thrown open to public traffic in 1937.”可知金门大桥花费了大约四年时间建设完成，故选D。
22. Which of the following bridges was built the earliest?
A. Golden Gate Bridge.
B. Brooklyn Bridge.
C. George Washington Bridge.
D. Navajo Bridge.
【答案】B
【解析】细节理解题：根据“the Golden Gate Bridge started in the year 1933 to connect ……It was finally thrown open to public traffic in 1937.；The Brooklyn Bridge is…… having been opened in the year 1883；Navajo Bridge……The construction of this bridge started in the year 1927, ending two years later；Mackinac Bridge ……the bridge which started in the year 1954 and opened to the public in 1958；the George Washington Bridge which connects Fort Lee to Manhattan came into use in 1931 after a ……”可知布鲁克林大桥是最早建好开放的，1883年，故选B。
23. What will you do if you drive across Mackinac Bridge?
A. Have to pay some money.
B. Use the second bridge.
C. Cover nearly 250 meters.
D. See the statue of Dr. David B. Steinman.
【答案】A
【解析】细节细节题，根据：“People using this bridge are charged a certain amount of money.”可知：使用这座桥的人被收取一定的费用。故选A
