单项选择题

The author's purpose in writing this text is.

A．to investigate why people choose to travel
B．to celebrate the grand American tradition of travel
C．to encourage more Americans to travel
D．to describe the travel market in the United States

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单项选择题

According to the text, discrimination can lead to.

A．higher levels of poverty
B．low levels of self-esteem
C．tension between different races
D．increased gender sensitization

单项选择题

The word boosts (Line 3, Para. 5) means.

A．kicks
B．increases
C．aggrandizes
D．supplements