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

In the last paragraph the author cites the example of beautiful peacocks with gorgeous tails to mean ______.

A．a female who favors cute clothes
B．a male who likes cute clothes
C．an animal that favors many friends
D．a male who is cute but not rich