题目内容
●Underground City,Montreal,Canada
Take one of the 120 entrances into the largest man-made underground network in the world.
Montreal’s Underground City was first built in 1962.About 500,000 people a day use its 32 kilometers of shopping malls,apartment buildings,hotels,banks,offices,museums,and universities;there are also two train stations and a bus terminal（终点站）.
●Mammoth Cave National Park,Kentucky,America
Place names such as Grand Avenue and Frozen Niagara give an idea of what’s in the world’s longest underground cave system.The oldest part was formed 10 million years ago,9.5 million years before man made an appearance.
●Hannan’s North Mine,Kalgoorlie,Australia
Go down 30.5 meters in a cage elevator to tunnels dug during Australia’s 19th-century gold rush.Try your hand at panning for gold（淘金）.Kalgoorlie still produces 10 percent of the world’s gold.
●Wieliczka Salt Mine,Krakow,Poland
It all started when salt was just like today’s oil.Nine centuries of mining has produced miles of undergroud passages and huge caves to a depth of 134 meters.More than one million people a year visit the UNESCO-listed site, which includes lakes and statues made from salt,the world’s largest mining museum and concert halls.
●Berlin Nuclear Bunker（地堡）,Germany
Take a few minutes to adjust to the dim（昏暗的）light of this 1971 radiation-proof Cold War bunker.Feel the cold enter your bones in the deathly silence.The narrow beds for 3,562 people take up most of the space.The bunker could operate for 14 days after a nuclear attack.It’s a frightening experience.
1.What do the above five attraction have in common?
A. They are all man-made. B. They all lie underground.
C. They are all radiation-proof. D. They all date back to the 19th century.
2.In Wieliczka Salt Mine,visitors can .
A. make salt statues B. enjoy the mountain scenery
C. learn about salt mining history D. experience mining salt themselves
3.We can infer from the passage that .
A. Hannan’s North Mine is out of operation
B. Berlin Nuclear Bunker is well-equipped now
C. Mammoth Cave National Park has the world’s oldest cave system
D. Underground City was built to make citizens’ life more convenient
4.We can most probably read the passage in a ______.
A. news report B. history magazine C. travel guide D. research paper
