单项选择题

The passage is mainly concerned with ____________.

A．various ways to protect their rights
B．the free enterprise system in America
C．creative techniques in marketing
D．the advances of advertising techniques

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单项选择题

What may probably cause the Watergate Scandal

A．The presidential campaign in 1972.
B．American involvement in Indochina.
C．The signing of the treaty to limit strategic nuclear weapons.
D．The entry into the offices of the Democratic National Committee by force.

单项选择题

According to the first paragraph, it can be inferred that in President Nixon's first term ____________.

A．he made a series of reforms such as social reform and education reform
B．he nominated many officials to the various departments
C．Americans made a breakthrough in the space technology
D．Americans took interest in the space technology