听第10段材料，回答第17至20题。

17. What town is Williamstown, Massachusetts?

A. A college town. B. An art town. C. A volunteer town.

18. Who governs Williamstown?

A. Government officials.

B. Professors and policemen.

C. A board and a town manager.

19. Why was the 1753 House built?

A. To rebuild the oldest building.

B. To honor the founding of the town.

C. To create a typical tourist attraction.

20. What will the tourists do after the introduction?

A. Visit the 1753 House.

B. Do some voluntary work.

C. Attend the anniversary celebration.

第二部分 阅读理解(共两节，满分40分)

第一节(共15小题;每小题2分,满分30分)

阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

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 1954 and opened to the public in 1958. People using this bridge arc 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.

22. Which of the following bridges was built the earliest?

A. Golden Gate Bridge.

R. Brooklyn Bridge.

C. George Washington Bridge.

D. Navajo Bridge.

23. What will yodo if yodrive across Mackinac Bridge?