31. After the Vietnam War, the contradiction between Congress and the Executive resulted in the passage of ______.
 A. the Smith Act                                             B. the War Power Act
C. the Civil Rights Act                                    D. the Voting Rights Act
32. On April 30 1789, George Washington took the oath of office in ______ which housed the first American government.
 A. New York                                                  B. Washington
 C. Philadelphia                                               D. Boston
33. The American policy towards the Soviet Union after the Second World War was ______ .
 A. cooperation                                                B. neutrality
C. containment                                               D. impartiality
34. The writers of the Constitution worked out ______ in order to prevent the government from misusing its power.
 A. the Declaration of Independence                  B. the Bill of Rights
 C. the “winner-take-all” system                        D. checks and balances
 35. The presidential term in the U.S. is four years beginning on ______.
 A. November 20                                             B. November 12
 C. January 12                                                 D. January 20