单项选择题

A．By greeting each other very politely.
B．By exchanging their views on pubic affairs.
C．By displaying their feelings and emotions.
D．By asking each other some personal questions.
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单项选择题
Several tourism companies believe space travel is going to be a new profitable industry.
A．Y
B．N
C．NG
单项选择题
A．She has never been to Gettysburg.B．She took a political science course.C．Her family still goes on vacation together.D．She’’s interested in the United States Civil War.
A．She has never been to Gettysburg.
B．She took a political science course.
C．Her family still goes on vacation together.
D．She’’s interested in the United States Civil War.
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