1 . The black cloud rising every day at sunset in the Chihuahuan Desert went largely ignored for thousands of years. Native Americans noticed it, but did not track its source. Cowboys thought the cloud was smoke pouring from the earth, and avoided it.
In June of 1901, however, a teenage cowboy named Jim White happened to see the large, black cloud. He was curious and went to investigate. Instead of finding a volcano, as he had imagined, he discovered something equally amazing. It was a big mass of bats. Two days later, he returned with a lantern to explore further. It took him so long that his lantern went out. He managed to refill it with just enough oil to find his way back to the entrance.
The next time Jim White went to the cave, he brought a friend and supplies. They explored for three days and returned with descriptions that were so fantastic that few people believed them. The cowboys on nearby farms and the people in the tiny town of Carlsbad treated Jim’s stories as tall tales and nothing more.
After years of exploring the caves and finding no one to believe his stories, Jim White decided to create his own tourist attraction. He established trails (路线) along the paths he had found. One day in 1915, two men asked Jim for a tour. After seeing the caves, the men returned with a professional photographer named Ray V. Davis. Local doubts were finally put to rest by the photographs of the hidden beauty that Jim had discovered. All 13 locals of Carlsbad finally took a tour of the caves, which came to be known as Carlsbad Caverns.
In 1923, the government sent an official named Robert Holly to tour the caves. Later that year, the caves were stated a national monument (古迹), and in 1930 they became a national park. Jim White lived to see the Carlsbad Caverns become world-famous. Today, tourists can hike to and tour some of the 100 known caves in this huge natural wonder, thanks to the cowboy from New Mexico.
1. What do we know about the black cloud?| A．It was discovered in 1901. | B．It was noticed by accident. |
| C．It was actually a mass of bats. | D．It was smoke from the earth. |
| A．Jim’s friend. | B．A photographer. |
| C．Robert Holly. | D．13 locals of Carlsbad. |
| A．It made Jim White rich. | B．It was an easy process. |
| C．It happened before 1915. | D．It came true thanks to the photos. |
| A．A Brave Cowboy | B．A Hidden Wonder |
| C．A Worthwhile Invention | D．A Nationwide Contribution |
