单项选择题

The word "they" in paragraph 5 refers to ______ .

A．practicality and rationality
B．engineering and the liberal arts
C．reality and noble ideals
D．flexibility and a value system
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单项选择题
The writer thought the man might be ______ .
A．someone who had always been a tramp
B．someone who had once worked for him
C．someone who had once been his boss
D．someone he often saw in the park
单项选择题
When the man in park saw the writer, the man ______ .
A．begged some money from him
B．tried to hit him
C．offered to help him
D．walked away from him
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