单项选择题

A．Being unable to communicate face to face with others.
B．Having exams and tests.
C．Phone calls are expensive.
D．Professors are tough.
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单项选择题
The 13th generation of the USA is more selfish and materialized than its previous generations.
A．Y
B．N
C．NG
单项选择题
The word disorientation in the passage, esp. in sentence l para.2, means__________.
A．orientation
B．disobeying
C．displacement
D．loss of direction
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