四、阅读理解（共15小题；每小题2分，满分30分）
Another man-made wonder of the United States was built long before the nation was established. About 900 years ago, the Ancestral Puebloan people built villages high in the walls of canyons in Colorado, where 600 cliff dwellings are now part of the Mesa Verde National Park.
Visitors can stand at the top of the mesas and look into the dwellings almost hidden in openings of the rock w
alls. The Puebloan people cut small steps into the rock, which connected buildings containing hundreds of rooms.
The rock walls have protected the buildings from severe weather in the area; therefore, they remain mostly unchanged in the hundreds of years since they were built.
Our final man-made wonder is in the northwestern city of Seattle, Washington. The Space Needle was built as the central structure for the 1962 World's Fair.
The 184-meter-tall structure was designed by Edward Carlson, which has a wide base on the ground, with its middle narrow and a large ring-like structure on top. The structure was meant to look like a "flying saucer," a vehicle that was popular in science fiction space travel stories. The saucer includes an observation area and eating place. The restaurant slowly turns to provide visitors with a 360 degree view of Seattle.
The Space Needle, only costing about $4,500,000, was not very costly, and was designed and completed in about a year and opened on the first day of the World's Fair.
Today, the Space
Needle is the most popular place for visitors to Seattle. And it remains the internationally known symbol of the city.
56.What the passage before this one can be about?
A.Some natural wonders in the world.
B.Sightseeing in the US.
C.Some other artificial wonders in the US.
D.American geography.
57. What does the underlined word “dwelling” mean?
A. village B. house C. canyon D. step
58. Which of the following descriptions about the Space Needle is TRUE?
A. It is a man-made wonder in Washington, D.C..
B. Edward Carlson built the structure.
C. It has a ring-like structure on top.
D. It remains the internationally known symbol of the US.
59. What is the passage mainly about?
A. Visiting the US B. Man-made wonders in the US
C. Wonders in the world D. Famous places in the US
