12．The state of Colorado has four of the 58 national parks in the United States．These have been judged as the best places of all the national parks．
Black Canyon of Gunnison National Park
This park lies in western Colorado and offers the most impressive views from up in the mountains into the canyons （峡谷）below．While exploring the canyons，you will find that the walls drop nearly straight down into very narrow valleys with snake-like rivers below．Visitors are offered more than 100camping sites，and a lot of bird species and many animals are native to the area．
Rocky Mountain National Park
It is the only national park in the north central region in the state of Colorado．Elevations （高地）in this park you will find are anywhere from 8，000feet to 14，259at the top of Longs Peak．While travelling throughout this park，you will find there are two very different climates because of the fact that the tops of the Rocky Mountains make a difference．With 359miles of trails for hiking，there are a lot of places for camping，horseback riding and just enjoying the sights of nature．
Mesa Verde National Park
This is probably the most interesting of all the national parks，offering an extremely interesting trip back in time to 600AD．up to 1，300AD．This park was declared （宣布）a protected national park in 1906because of the cliff dwellings （住人的崖洞）that were found throughout the park area，which was once home to American Indians．Visitors can actually walk through these dwellings，and they may imagine what each room may have been used for so many years ago．
Great Sand Dunes National Park
The Great Sand Dunes （沙丘）National Park lies in south central Colorado，about 127miles from Pueblo．This park has the tallest sand dunes in all of North America，with trails for hiking．Natural sandy beaches there are good for people who want to swim around the small rivers and lakes．
41．A person who enjoys mountains and rivers will visitA．
A．Black Canyon of Gunnison National Park
B．Rocky Mountain National Park
C．Mesa Verde National Park
D．Great Sand Dunes National Park
42．Which of the following is TRUE about Rocky Mountain National Park？B
A．It has the tallest mountains in the USA．
B．It has very different weather conditions．
C．It is the most interesting national park．
D．It is about 359miles from Pueblo．
43．If you are interested in history you will visitD．
A．Rocky Mountain National Park
B．Black Canyon of Gunnison National Park
C．Great Sand Dunes National Park
D．Mesa Verde National Park
44．Mesa Verde National Park has been a protected national park for aroundC years．
A.1，000
B.1，500
C.100
D.200
45．The national park in south central Colorado is famous for itsD．
A．beautiful canyons
B．Longs Peak
C．cliff dwellings
D．sand dunes．
分析 本文介绍了几个著名的国家公园．
解答 41．A．细节理解题．根据Black Canyon of Gunnison National Park的介绍，you will find that the walls drop nearly straight down into very narrow valleys with snake-like rivers below，可知，该公园有高山和弯曲的小河，故选A．
42．B．细节理解题．根据Rocky Mountain National Park部分介绍的there are two very different climates，可知它有十分不同的气候，故选B．
43．D．推理判断题．根据Mesa Verde National Park介绍的…offering an extremely interesting trip back in time to 600 A．D．up to 1，300 A．D可知这里有悠久的历史，故选D．
44．C．数字计算题．根据Mesa Verde National Park部分的This park was declared （宣布）a protected national park in 1906，可知，该公园于1906年被宣布成为国家级保护公园，距今100多年，故C为正确答案．
45．D．细节理解题．由最后一段This park has the tallest sand dunes in all of North America，with trails for hiking可知国家公园的沙丘很有名，故选D．
点评 本篇文章难点在推理判断题上．推理判断题要以表面文字为前提，以具体事实为依据进行推理，做出判断．这种推理方式比较直接，考生只要弄清事实，即可结合上下文推断出合理的结论．
