单项选择题

From this passage we can infer that ______.

A．college students always look down upon craftsmen
B．schools and books are not the only way to knowledge
C．scientific discoveries are based on personal experience
D．discoveries are the most important source of knowledge

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单项选择题

The writer advises college students to ______.

A．talk to a fisherman as Aristotle once attempted to
B．be patient in helping a craftsman with scientific term
C．learn a craftsman's experience by examining it carefully
D．accept everything that a craftsman teaches as valuable

单项选择题

Which of the following statements is supported by the passage

A．College students have trouble separating good plants from wild grass.
B．Craftsmen's experience is usually unscientific.
C．College students can gain knowledge from such persons as craftsmen.
D．Traditional practices are as important as experience for college students.