单项选择题

All scientific truth is tentative because

A．evidence is basically a value judgment.
B．evidence is basically an esthetic judgment.
C．evidence is basically a purposeful judgment.
D．evidence is basically a factual judgment.

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单项选择题

The word concrete in the second sentence of the passage means

A．general.
B．particular.
C．scientific.
D．verifiable.

单项选择题

Which statement is NOT true

A．Science answers questions about accurate facts.
B．Science answers questions about observations.
C．Scientists cannot study the social consequences of beliefs.
D．Scientists can study the truth or error of beliefs.