【Exercises】
A.Read the following statements carefully and choose the word or phrase that best completes the sentence.
1.Soil erosion was once a serious problem in the southern part of the Great Plains due to________and careless plowing.
A.overgrazing B.dust storm C.deforesting D.acid rain
2.Together，the five Great Lakes hold more than________of the world’s fresh surface water.
A.10％ B.15％ C.20％ D.25％
3.The United States is rich in natural resources.Besides plentiful water resources，it is also blessed with dense forests and abundant energy resources，with________as the three major ones.
A.coal，oil and gas B.gold，silver and lead
C.coal，gold and gas D.gold，oil and gas
4.Throughout American history，the core of the population has been made up of White Anglo⁃Saxon Protestants（sometimes called WASPs），who trace their origins to________.
A.Germany B.France C.Ireland D.England
5.________are the largest minority group in the United States.
A.Hispanics B.African Americans
C.Asian Americans D.Native Americans
6.Traditionally，most of the U.S.manufacturing industries have been concentrated in the Midwest and the northeastern part of the country.Now many modern textile companies have moved their production to________.
A.the South B.the North
C.the East D.the West
7.New Deal legislation in the 1930s extended federal involvement in industry，agriculture and________.
A.education B.service industry
C.natural resources D.public welfare
8.For some states，such as Hawaii，Florida and California，the________industry has become a central economic pillar.
A.motor vehicle B.electronic equipment
C.chemical D.tourism
9.The U.S.federal government can help to accelerate or decelerate the economy’s growth rate in two ways.One is to adjust its own spending and tax rates，which is called________policy.
A.monetary B.financial C.political D.fiscal
10.The Federal________serves as the central bank of the United States.
A.Reserve System B.Fiscal System
C.Financial System D.Monetary System
B.Read the following statements carefully and tell whether they are true or false.
（ ）1.The American Flag has 13 red and white horizontal stripes and 50 white stars in a rectangular blue square in the upper right corner of the flag.
（ ）2.The region known as New England includes six states：Maine，New Hampshire，Vermont，Massachusetts，Rhode Island and Connecticut.
（ ）3.The Great Lakes are shared between the United States and Canada except for Lake Ontario.
（ ）4.California is the state with the largest percentage of Asian Americans.
（ ）5.The U.S.economy combines private ownership with government regulation.