The first thirteen states of the US mainly located （）seaboard.

单项选择题The Great Salt Lake lies in northern （）

A.Idaho
B.Arizona
C.Nevada
D.Utah

单项选择题The US Federal Government is composed of the following except （）

A.thelegislative
B.thestandingcommittee
C.thejudicial
D.theexecutive

单项选择题In Feb. （）came President Nixon’s historic visit to China.

A.1979
B.1972
C.1973

单项选择题（）part is the most densely populated region in America.

A.The southern
B.The northeastern
C.The western

单项选择题The political system of the US is based on the following except （）

A.federalism
B.the constitutional monarchy
C.the separation of powers
D.respect for the constitution
E.the rule of law