题目内容

Which of the following does not belong to the three principal functions of U.S. higher education().

A. Teaching.
B. Research.
C. Public service.
D. Social charity.

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The U.S. ranks () in the export of rice in the world.

A. first
B. second
C. third
D. fourth

() is the nation’s leading center of heavy industry.

A. Midwest
B. Northeast
C. Southeast
D. Southwest

Which of the following is NOT a nickname of the United States().

A. Uncle Sam.
Big apple.
C. Melting pot.
D. A Nation on the Wheel.

What is the leading corn-producing state in the United States().

A. Nebraska.
B. Minnesota.
C. Iowa.
D. Indiana.

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