单项选择题

A．College professors.
B．Computer users.
C．Lonely people.
D．Internet surfers.
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单项选择题
A．A dance designer for the Frankfurt Ballet.B．A teacher at the dance school.C．A student at the dance school.D．A famous dancer in a dance troupe.
A．A dance designer for the Frankfurt Ballet.
B．A teacher at the dance school.
C．A student at the dance school.
D．A famous dancer in a dance troupe.
单项选择题
What CAN'T be inferred from the 1st paragraph
A．Scientific experiments in the past three hundred years have produced many valuable items.
B．For three hundred years there have been people holding hostile attitude toward science.
C．For centuries scientific discoveries have been hailed by the human world unanimously.
D．Three hundred years is not long enough to settle back for critical appraisal of the scientific method.
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