单项选择题

It can be inferred from this passage that ______.

A．all the features that a theory has are not important
B．only accessible features of a theory are important
C．the accessible features of a theory must be very important
D．the theory about the demise of dinosaurs is false

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单项选择题

Which of the following can serve as one of the reasons to support the idea that theories are like apples

A．Both of them are either good or bad.
B．Both of them have all sorts of features.
C．Both of them have features that indicate their truth or goodness.
D．Responsible theory choice is dissimilar to responsible shopping.

单项选择题

Some features of a theory may be considered very important if they are ______.

A．indicative of the truth of the theory
B．irrelevant to an analysis of scientific knowledge
C．irrelevant to doing science
D．neutral to a theory’s being true or false