5.Petrified wood is the official state fossil（化石）.Most petrified wood comes from the Petrified Forest in northeastern Arizona.
6.The bola tie is the official state neckwear（领带，围巾之类）.
7.The Palo verde is the official state tree.Its name means green stick and it blooms a brilliant yellowgold in April or May.
8.The cactus wren is the official state bird.It grows seven to eight inches long and likes to build nests in the protection of thorny（多刺的）desert plants like the arms of the giant saguaro cactus.
9.Turquoise（［矿］绿宝石）is the official state gemstone.The bluegreen stone has a somewhat waxy surface and can be found throughout the state.
10.Arizona is home of the Grand Canyon National Park.
11.The ringtail（浣熊）is the official state mammal（哺乳动物）.The ringtail is a small foxlike animal about two and onehalf feet long and is a shy，nocturnal（夜曲的）creature.
12.The amount of copper on the roof of the Capitol building is equivalent（相等的，相当的）to 4，800，000pennies.
13.Arizona observes Mountain Standard Time on a year round basis.The one exception is the Navajo Nation，located in the northeast corner of the state，which observes the daylight savings time change.
14.The battleship USS Arizona was named in honor of the state.It was commissioned in 1913and launched in 1915from the Brooklyn（布鲁克林（美国纽约市西南部的一区））Navy Yard（海军工厂，海军船坞）.
15.World War II brought many military personnel（人员，职员）to train at Luke and Thunderbird fields in Glendale.
16.The Castilian and Burgundian flags of Spain，the Mexican flag，the Confederate flag，and the flag of the United States have all flown over the land area that has become Arizona.
17.In 1926，the Southern Pacific Railroad connected Arizona with the eastern states.
18.The geographic center of Arizona is 55miles （89kilometers）southeast of Prescott.
19.Arizonas most abundant mineral is copper.
20.Bisbee，located in Tombstone Canyon，is known as the Queen of the Copper Mines.During its mining history the town was the largest city between Saint Louis（圣路易）and San Francisco（旧金山）.
21.The states most popular natural wonders include the Grand Canyon，Havasu Canyon，Grand Canyon Caves，Lake Powell/Rainbow Bridge，Petrified Forest/Painted Desert，Monument Valley，Sunset Crater，Meteor Crater，Sedona Oak Creek Canyon，Salt River Canyon，Superstition Mountains，Picacho Peak State Park，Saguaro National Park，Chiricahua（奇里卡华人（居住在美国亚利桑那州及新墨西哥州等地的阿帕切印第安人））National Monument，and the ColoradoRiver.
22.The Arizona tree frog is the state official amphibian（两栖动物）.The frog is actually between threequarter to two inches long.
23.Once a rowdy（吵闹的）copper mining town，Jeromes population dwindled（缩小）to as few as 50people after the mines closed in 1953.
24.The original London Bridge was shipped stonebystone and reconstructed in Lake Havasu City.
25.The capital of the Navajo（纳瓦霍人（美国最大的印第安部落））Reservation is Window Rock.
26.The states precipitation varies.At Flagstaff the annual average is 18.31inches；Phoenix averages 7.64inches；and Yumas annual average is 3.27inches.
27.Crops include 2%；pastureland（牧场）57%；forests 24%；and other uses are 17%in landuse designation.
28.The Arizona ridgenosed rattlesnake（〈美〉［动］响尾蛇）is perhaps the most beautiful of all eleven species of rattlesnakes found in Arizona.
29.The colors blue and gold are the official state colors.
30.Located in Fountain Hills is a fountain believed to be the tallest in the world.
31.Four Corners is noted as the spot in the United States where a person can stand in four states at the same time.
32.The age of a saguaro cactus is determined by its height.
33.The Apache trout is considered a threatened species under the federal Endangered Species Act.
34.Arizona，among all the states，has the largest percentage of its land set aside and designated as Indian lands.
35.Rising to a height of 12，643feet，Mount Humphreys north of Flagstaff（旗杆）is the states highest mountain.
36.The Hopi Indians of Arizona are noted for growing their multicolored（多彩的，彩色的）corn.
37.Barry Goldwater，a famous public official，senator，and presidential candidate was born in Phoenix.
38.In 1939architect Frank Lloyd Wrights studio，Taliesin West，was built near Phoenix.
39.Oraibi is the oldest Indian settlement in the United States.The Hopis Indians founded it.
40.Grand Canyons Flaming Gorge got its name for its blazing red and orange colored，twelvehundredfoothigh walls.
41.Grand Canyons Disaster Falls was named to commemorate（纪念）the site of a previous explorers wreck［（船，飞机的）失事］.
42.Grand Canyons Marble Canyon got its name from its thousandfootthick seam of marble and for its walls eroded（受腐蚀，逐渐消蚀掉）to a polished glass finish.
43.Arizona became the 48th state on February 14，1912.
44.The worlds largest solar telescope is located at Kitts Peak National Observatory in the city of Sells.
45.At one time camels were used to transport goods across Arizona.
46.Between the years 1692and 1711Father Eusebio Kino focused on area missionary work.During the time many grain and stock farms began.
47.A person from Arizona is called an Arizonan.
48.Phoenix originated in 1866as a hay（干草）camp to supply Camp McDowell.
49.The famous labor leader，Ceasar Estrada Chavez，was born in Yuma.
50.Tombstone，Ruby，Gillette，and Gunsight are among the ghost towns scattered throughout the state.
Arkansas